Update to latest style API

17 files changed, 245 insertions, 245 deletions

diff --git a/kstyles/asteroid/asteroid.cpp b/kstyles/asteroid/asteroid.cpp
index a14574bb0..11a06f29a 100644
--- a/kstyles/asteroid/asteroid.cpp
+++ b/kstyles/asteroid/asteroid.cpp
@@ -106,7 +106,7 @@ AsteroidStyle::~AsteroidStyle()
  *	get deleted here. */
 }
 
-void AsteroidStyle::polish(TQStyleControlElementData ceData, ControlElementFlags elementFlags, void *ptr)
+void AsteroidStyle::polish(const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, void *ptr)
 {
 	if (ceData.widgetObjectTypes.contains(TQWIDGET_OBJECT_NAME_STRING)) {
 		TQWidget *w = reinterpret_cast<TQWidget*>(ptr);
@@ -143,7 +143,7 @@ void AsteroidStyle::polish(TQStyleControlElementData ceData, ControlElementFlags
 	}
 }
 
-void AsteroidStyle::unPolish(TQStyleControlElementData ceData, ControlElementFlags elementFlags, void *ptr)
+void AsteroidStyle::unPolish(const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, void *ptr)
 {
 	KStyle::unPolish(ceData, elementFlags, ptr);
 }
@@ -154,7 +154,7 @@ void AsteroidStyle::unPolish(TQStyleControlElementData ceData, ControlElementFla
     Changes some application-wide settings
 */
 void
-AsteroidStyle::applicationPolish(TQStyleControlElementData, ControlElementFlags, void *)
+AsteroidStyle::applicationPolish(const TQStyleControlElementData&, ControlElementFlags, void *)
 {
 	TQPalette wp = TQApplication::palette();
 	wp.setColor(TQColorGroup::Dark, TQColor(128, 128, 128));
@@ -165,7 +165,7 @@ AsteroidStyle::applicationPolish(TQStyleControlElementData, ControlElementFlags,
 /*! \reimp
 */
 void
-AsteroidStyle::applicationUnPolish(TQStyleControlElementData, ControlElementFlags, void *)
+AsteroidStyle::applicationUnPolish(const TQStyleControlElementData&, ControlElementFlags, void *)
 {
 
 }
@@ -181,7 +181,7 @@ void AsteroidStyle::renderMenuBlendPixmap(KPixmap &pix,
 
 void AsteroidStyle::drawKStylePrimitive(KStylePrimitive ksp,
                                         TQPainter *p,
-                                        TQStyleControlElementData ceData,
+                                        const TQStyleControlElementData &ceData,
                                         ControlElementFlags elementFlags,
                                         const TQRect &r,
                                         const TQColorGroup &cg,
@@ -295,7 +295,7 @@ void AsteroidStyle::drawKStylePrimitive(KStylePrimitive ksp,
 }
 
 int AsteroidStyle::styleHint( TQ_StyleHint stylehint,
-                                   TQStyleControlElementData ceData,
+                                   const TQStyleControlElementData &ceData,
                                    ControlElementFlags elementFlags,
                                    const TQStyleOption &option,
                                    TQStyleHintReturn* returnData,
@@ -326,7 +326,7 @@ int AsteroidStyle::styleHint( TQ_StyleHint stylehint,
 
 void AsteroidStyle::drawPrimitive(TQ_PrimitiveElement pe,
                                   TQPainter *p,
-                                  TQStyleControlElementData ceData,
+                                  const TQStyleControlElementData &ceData,
                                   ControlElementFlags elementFlags,
                                   const TQRect &r,
                                   const TQColorGroup &cg,
@@ -982,7 +982,7 @@ void AsteroidStyle::drawPrimitive(TQ_PrimitiveElement pe,
 
 void AsteroidStyle::drawControl(TQ_ControlElement ce,
                                 TQPainter *p,
-                                TQStyleControlElementData ceData,
+                                const TQStyleControlElementData &ceData,
                                 ControlElementFlags elementFlags,
                                 const TQRect &r,
                                 const TQColorGroup &cg,
@@ -1723,7 +1723,7 @@ void AsteroidStyle::drawControl(TQ_ControlElement ce,
 
 void AsteroidStyle::drawControlMask(TQ_ControlElement ce,
                                     TQPainter *p,
-                                    TQStyleControlElementData ceData,
+                                    const TQStyleControlElementData &ceData,
                                     ControlElementFlags elementFlags,
                                     const TQRect &r,
                                     const TQStyleOption &o,
@@ -1770,7 +1770,7 @@ void AsteroidStyle::drawControlMask(TQ_ControlElement ce,
 
 void AsteroidStyle::drawComplexControl(TQ_ComplexControl cc,
                                        TQPainter *p,
-                                       TQStyleControlElementData ceData,
+                                       const TQStyleControlElementData &ceData,
                                        ControlElementFlags elementFlags,
                                        const TQRect &r,
                                        const TQColorGroup &cg,
@@ -2186,7 +2186,7 @@ void AsteroidStyle::drawComplexControl(TQ_ComplexControl cc,
 
 void AsteroidStyle::drawComplexControlMask(TQ_ComplexControl cc,
                                            TQPainter *p,
-                                           const TQStyleControlElementData ceData,
+                                           const TQStyleControlElementData &ceData,
                                            const ControlElementFlags elementFlags,
                                            const TQRect &r,
                                            const TQStyleOption &o,
@@ -2209,7 +2209,7 @@ void AsteroidStyle::drawComplexControlMask(TQ_ComplexControl cc,
 	}
 }
 
-int AsteroidStyle::pixelMetric(PixelMetric pm, TQStyleControlElementData ceData, ControlElementFlags elementFlags, const TQWidget *w) const
+int AsteroidStyle::pixelMetric(PixelMetric pm, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, const TQWidget *w) const
 {
 	switch (pm) {
 	/*	PixelMetrics available are:
@@ -2340,7 +2340,7 @@ int AsteroidStyle::pixelMetric(PixelMetric pm, TQStyleControlElementData ceData,
 	}
 }
 
-TQRect AsteroidStyle::subRect(SubRect sr, const TQStyleControlElementData ceData, const ControlElementFlags elementFlags, const TQWidget *w) const
+TQRect AsteroidStyle::subRect(SubRect sr, const TQStyleControlElementData &ceData, const ControlElementFlags elementFlags, const TQWidget *w) const
 {
 	switch (sr) {
 	/*	SubRects to calculate are:
@@ -2385,7 +2385,7 @@ TQRect AsteroidStyle::subRect(SubRect sr, const TQStyleControlElementData ceData
 }
 
 TQRect AsteroidStyle::querySubControlMetrics(TQ_ComplexControl cc,
-                                            TQStyleControlElementData ceData,
+                                            const TQStyleControlElementData &ceData,
                                             ControlElementFlags elementFlags,
                                             SubControl sc,
                                             const TQStyleOption &o,
@@ -2488,7 +2488,7 @@ TQRect AsteroidStyle::querySubControlMetrics(TQ_ComplexControl cc,
 }
 
 TQSize AsteroidStyle::sizeFromContents(ContentsType ct,
-                                      TQStyleControlElementData ceData,
+                                      const TQStyleControlElementData &ceData,
                                       ControlElementFlags elementFlags,
                                       const TQSize &s,
                                       const TQStyleOption &o,
@@ -2624,7 +2624,7 @@ void AsteroidStyle::paletteChanged()
 {
 }
 
-bool AsteroidStyle::objectEventHandler( TQStyleControlElementData ceData, ControlElementFlags elementFlags, void* source, TQEvent *e )
+bool AsteroidStyle::objectEventHandler( const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, void* source, TQEvent *e )
 {
 	/*	Win2K has this interesting behaviour where it sets the current
 		default button to whatever pushbutton the user presses the mouse
diff --git a/kstyles/asteroid/asteroid.h b/kstyles/asteroid/asteroid.h
index d6b05e8ae..7bd652a12 100644
--- a/kstyles/asteroid/asteroid.h
+++ b/kstyles/asteroid/asteroid.h
@@ -17,10 +17,10 @@ public:
 	AsteroidStyle();
 	virtual ~AsteroidStyle();
 
-	void polish(TQStyleControlElementData ceData, ControlElementFlags elementFlags, void *);
-	void unPolish(TQStyleControlElementData ceData, ControlElementFlags elementFlags, void *);
-	void applicationPolish(TQStyleControlElementData ceData, ControlElementFlags elementFlags, void *);
-	void applicationUnPolish(TQStyleControlElementData ceData, ControlElementFlags elementFlags, void *);
+	void polish(const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, void *);
+	void unPolish(const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, void *);
+	void applicationPolish(const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, void *);
+	void applicationUnPolish(const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, void *);
 
 	
 	void renderSliderHandle(TQPainter *p,
@@ -36,7 +36,7 @@ public:
 	
 	void drawKStylePrimitive(KStylePrimitive,
 	                         TQPainter *,
-	                         TQStyleControlElementData ceData,
+	                         const TQStyleControlElementData &ceData,
 	                         ControlElementFlags elementFlags,
 	                         const TQRect &,
 	                         const TQColorGroup &,
@@ -44,14 +44,14 @@ public:
 	                         const TQStyleOption & = TQStyleOption::Default,
 	                         const TQWidget * = 0) const;
 
-	int styleHint(TQ_StyleHint, TQStyleControlElementData ceData, ControlElementFlags elementFlags,
+	int styleHint(TQ_StyleHint, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags,
 			    const TQStyleOption & = TQStyleOption::Default,
 			    TQStyleHintReturn * = 0,
 			    const TQWidget * = 0 ) const;
 
 	void drawPrimitive(TQ_PrimitiveElement,
 	                   TQPainter *,
-	                   TQStyleControlElementData ceData,
+	                   const TQStyleControlElementData &ceData,
 	                   ControlElementFlags elementFlags,
 	                   const TQRect &,
 	                   const TQColorGroup &,
@@ -60,7 +60,7 @@ public:
 
 	void drawControl(TQ_ControlElement,
 	                 TQPainter *,
-	                 TQStyleControlElementData ceData,
+	                 const TQStyleControlElementData &ceData,
 	                 ControlElementFlags elementFlags,
 	                 const TQRect &,
 	                 const TQColorGroup &,
@@ -70,7 +70,7 @@ public:
 
 	void drawControlMask(TQ_ControlElement,
 	                     TQPainter *,
-	                     TQStyleControlElementData ceData,
+	                     const TQStyleControlElementData &ceData,
 	                     ControlElementFlags elementFlags,
 	                     const TQRect &,
 	                     const TQStyleOption &,
@@ -78,7 +78,7 @@ public:
 
 	void drawComplexControl(TQ_ComplexControl,
 	                        TQPainter *,
-	                        TQStyleControlElementData ceData,
+	                        const TQStyleControlElementData &ceData,
 	                        ControlElementFlags elementFlags,
 	                        const TQRect &,
 	                        const TQColorGroup &,
@@ -90,33 +90,33 @@ public:
 
 	void drawComplexControlMask(TQ_ComplexControl,
 	                            TQPainter *,
-	                            const TQStyleControlElementData ceData,
+	                            const TQStyleControlElementData &ceData,
 	                            const ControlElementFlags elementFlags,
 	                            const TQRect &r,
 	                            const TQStyleOption & = TQStyleOption::Default,
 	                            const TQWidget * = 0) const;
 
-	int pixelMetric(PixelMetric, TQStyleControlElementData ceData, ControlElementFlags elementFlags, const TQWidget * = 0) const;
+	int pixelMetric(PixelMetric, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, const TQWidget * = 0) const;
 
-	int kPixelMetric( KStylePixelMetric kpm, TQStyleControlElementData ceData, ControlElementFlags elementFlags, const TQWidget* /* widget */) const;
+	int kPixelMetric( KStylePixelMetric kpm, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, const TQWidget* /* widget */) const;
 
-	TQRect subRect(SubRect, const TQStyleControlElementData ceData, const ControlElementFlags elementFlags, const TQWidget *) const;
+	TQRect subRect(SubRect, const TQStyleControlElementData &ceData, const ControlElementFlags elementFlags, const TQWidget *) const;
 
 	TQRect querySubControlMetrics(TQ_ComplexControl,
-	                             TQStyleControlElementData ceData,
+	                             const TQStyleControlElementData &ceData,
 	                             ControlElementFlags elementFlags,
 	                             SubControl,
 	                             const TQStyleOption & = TQStyleOption::Default,
 	                             const TQWidget * = 0) const;
 
 	TQSize sizeFromContents(ContentsType,
-	                       TQStyleControlElementData ceData,
+	                       const TQStyleControlElementData &ceData,
 	                       ControlElementFlags elementFlags,
 	                       const TQSize &,
 	                       const TQStyleOption &,
 	                       const TQWidget * = 0) const;
 
-	virtual bool objectEventHandler( TQStyleControlElementData ceData, ControlElementFlags elementFlags, void* source, TQEvent *e );
+	virtual bool objectEventHandler( const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, void* source, TQEvent *e );
 
 protected slots:
 	void paletteChanged();
diff --git a/kstyles/highcolor/highcolor.cpp b/kstyles/highcolor/highcolor.cpp
index e296c4196..0dc02e7ec 100644
--- a/kstyles/highcolor/highcolor.cpp
+++ b/kstyles/highcolor/highcolor.cpp
@@ -188,7 +188,7 @@ HighColorStyle::~HighColorStyle()
 }
 
 
-void HighColorStyle::polish(TQStyleControlElementData ceData, ControlElementFlags elementFlags, void *ptr)
+void HighColorStyle::polish(const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, void *ptr)
 {
 	if (ceData.widgetObjectTypes.contains(TQWIDGET_OBJECT_NAME_STRING)) {
 		TQWidget *widget = reinterpret_cast<TQWidget*>(ptr);
@@ -213,7 +213,7 @@ void HighColorStyle::polish(TQStyleControlElementData ceData, ControlElementFlag
 }
 
 
-void HighColorStyle::unPolish(TQStyleControlElementData ceData, ControlElementFlags elementFlags, void *ptr)
+void HighColorStyle::unPolish(const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, void *ptr)
 {
 	if (ceData.widgetObjectTypes.contains(TQWIDGET_OBJECT_NAME_STRING)) {
 		TQWidget *widget = reinterpret_cast<TQWidget*>(ptr);
@@ -253,7 +253,7 @@ void HighColorStyle::renderMenuBlendPixmap( KPixmap& pix, const TQColorGroup &cg
 // This function draws primitive elements as well as their masks.
 void HighColorStyle::drawPrimitive( TQ_PrimitiveElement pe,
 									TQPainter *p,
-									TQStyleControlElementData ceData,
+									const TQStyleControlElementData &ceData,
 									ControlElementFlags elementFlags,
 									const TQRect &r,
 									const TQColorGroup &cg,
@@ -967,7 +967,7 @@ void HighColorStyle::drawPrimitive( TQ_PrimitiveElement pe,
 
 void HighColorStyle::drawKStylePrimitive( KStylePrimitive kpe,
 										  TQPainter* p,
-										  TQStyleControlElementData ceData,
+										  const TQStyleControlElementData &ceData,
 										  ControlElementFlags elementFlags,
 										  const TQRect &r,
 										  const TQColorGroup &cg,
@@ -1146,7 +1146,7 @@ void HighColorStyle::drawKStylePrimitive( KStylePrimitive kpe,
 
 void HighColorStyle::drawControl( TQ_ControlElement element,
 								  TQPainter *p,
-								  TQStyleControlElementData ceData,
+								  const TQStyleControlElementData &ceData,
 								  ControlElementFlags elementFlags,
 								  const TQRect &r,
 								  const TQColorGroup &cg,
@@ -1522,7 +1522,7 @@ void HighColorStyle::drawControl( TQ_ControlElement element,
 
 void HighColorStyle::drawControlMask( TQ_ControlElement element,
 								  	  TQPainter *p,
-								  	  TQStyleControlElementData ceData,
+								  	  const TQStyleControlElementData &ceData,
 								  	  ControlElementFlags elementFlags,
 								  	  const TQRect &r,
 								  	  const TQStyleOption& opt,
@@ -1550,7 +1550,7 @@ void HighColorStyle::drawControlMask( TQ_ControlElement element,
 
 void HighColorStyle::drawComplexControl( TQ_ComplexControl control,
                                          TQPainter *p,
-                                         TQStyleControlElementData ceData,
+                                         const TQStyleControlElementData &ceData,
                                          ControlElementFlags elementFlags,
                                          const TQRect &r,
                                          const TQColorGroup &cg,
@@ -1737,7 +1737,7 @@ void HighColorStyle::drawComplexControl( TQ_ComplexControl control,
 
 void HighColorStyle::drawComplexControlMask( TQ_ComplexControl control,
 											 TQPainter *p,
-											 const TQStyleControlElementData ceData,
+											 const TQStyleControlElementData &ceData,
 											 const ControlElementFlags elementFlags,
 											 const TQRect &r,
 											 const TQStyleOption& opt,
@@ -1791,7 +1791,7 @@ void HighColorStyle::drawItem( TQPainter *p,
 }
 
 
-TQRect HighColorStyle::subRect(SubRect r, const TQStyleControlElementData ceData, const ControlElementFlags elementFlags, const TQWidget *widget) const
+TQRect HighColorStyle::subRect(SubRect r, const TQStyleControlElementData &ceData, const ControlElementFlags elementFlags, const TQWidget *widget) const
 {
 	// We want the focus rect for buttons to be adjusted from
 	// the Qt3 defaults to be similar to Qt 2's defaults.
@@ -1817,7 +1817,7 @@ TQRect HighColorStyle::subRect(SubRect r, const TQStyleControlElementData ceData
 }
 
 
-int HighColorStyle::pixelMetric(PixelMetric m, TQStyleControlElementData ceData, ControlElementFlags elementFlags, const TQWidget *widget) const
+int HighColorStyle::pixelMetric(PixelMetric m, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, const TQWidget *widget) const
 {
 	switch(m)
 	{
@@ -1861,7 +1861,7 @@ int HighColorStyle::pixelMetric(PixelMetric m, TQStyleControlElementData ceData,
 }
 
 /*! \reimp */
-int HighColorStyle::styleHint(StyleHint sh, TQStyleControlElementData ceData, ControlElementFlags elementFlags, const TQStyleOption &opt, TQStyleHintReturn *returnData, const TQWidget *w) const
+int HighColorStyle::styleHint(StyleHint sh, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, const TQStyleOption &opt, TQStyleHintReturn *returnData, const TQWidget *w) const
 {
 	int ret;
 
@@ -1886,7 +1886,7 @@ int HighColorStyle::styleHint(StyleHint sh, TQStyleControlElementData ceData, Co
 }
 
 TQSize HighColorStyle::sizeFromContents( ContentsType contents,
-										TQStyleControlElementData ceData,
+										const TQStyleControlElementData &ceData,
 										ControlElementFlags elementFlags,
 										const TQSize &contentSize,
 										const TQStyleOption& opt,
@@ -1991,7 +1991,7 @@ TQSize HighColorStyle::sizeFromContents( ContentsType contents,
 
 // Fix Qt's wacky image alignment
 TQPixmap HighColorStyle::stylePixmap(StylePixmap stylepixmap,
-									TQStyleControlElementData ceData,
+									const TQStyleControlElementData &ceData,
 									ControlElementFlags elementFlags,
 									const TQStyleOption& opt,
 									const TQWidget* widget) const
@@ -2009,7 +2009,7 @@ TQPixmap HighColorStyle::stylePixmap(StylePixmap stylepixmap,
 }
 
 
-bool HighColorStyle::objectEventHandler( TQStyleControlElementData ceData, ControlElementFlags elementFlags, void* source, TQEvent *event )
+bool HighColorStyle::objectEventHandler( const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, void* source, TQEvent *event )
 {
 	if (KStyle::objectEventHandler( ceData, elementFlags, source, event ))
 		return true;
diff --git a/kstyles/highcolor/highcolor.h b/kstyles/highcolor/highcolor.h
index 7f3d7a8e8..5f58b3f9c 100644
--- a/kstyles/highcolor/highcolor.h
+++ b/kstyles/highcolor/highcolor.h
@@ -65,15 +65,15 @@ class HighColorStyle : public KStyle
 		HighColorStyle( StyleType );
 		virtual ~HighColorStyle();
 
-		void polish(TQStyleControlElementData ceData, ControlElementFlags elementFlags, void *);
-		void unPolish(TQStyleControlElementData ceData, ControlElementFlags elementFlags, void *);
+		void polish(const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, void *);
+		void unPolish(const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, void *);
 
 		void renderMenuBlendPixmap( KPixmap& pix, const TQColorGroup &cg,
 								 	const TQPopupMenu* popup ) const;
 
 		void drawKStylePrimitive( KStylePrimitive kpe,
 					TQPainter* p,
-					TQStyleControlElementData ceData,
+					const TQStyleControlElementData &ceData,
 					ControlElementFlags elementFlags,
 					const TQRect &r,
 					const TQColorGroup &cg,
@@ -83,7 +83,7 @@ class HighColorStyle : public KStyle
 		
 		void drawPrimitive( TQ_PrimitiveElement pe,
 					TQPainter* p,
-					TQStyleControlElementData ceData,
+					const TQStyleControlElementData &ceData,
 					ControlElementFlags elementFlags,
 					const TQRect &r,
 					const TQColorGroup &cg,
@@ -92,7 +92,7 @@ class HighColorStyle : public KStyle
 
 		void drawControl( TQ_ControlElement element,
 					TQPainter *p,
-					TQStyleControlElementData ceData,
+					const TQStyleControlElementData &ceData,
 					ControlElementFlags elementFlags,
 					const TQRect &r,
 					const TQColorGroup &cg,
@@ -102,7 +102,7 @@ class HighColorStyle : public KStyle
 
 		void drawControlMask( TQ_ControlElement element,
 					TQPainter *p,
-					TQStyleControlElementData ceData,
+					const TQStyleControlElementData &ceData,
 					ControlElementFlags elementFlags,
 					const TQRect &r,
 					const TQStyleOption& = TQStyleOption::Default,
@@ -110,7 +110,7 @@ class HighColorStyle : public KStyle
 		
 		void drawComplexControl( TQ_ComplexControl control,
 					TQPainter *p,
-					TQStyleControlElementData ceData,
+					const TQStyleControlElementData &ceData,
 					ControlElementFlags elementFlags,
 					const TQRect &r,
 					const TQColorGroup &cg,
@@ -122,7 +122,7 @@ class HighColorStyle : public KStyle
 
 		void drawComplexControlMask( TQ_ComplexControl control,
 					TQPainter *p,
-					const TQStyleControlElementData ceData,
+					const TQStyleControlElementData &ceData,
 					const ControlElementFlags elementFlags,
 					const TQRect &r,
 					const TQStyleOption& = TQStyleOption::Default,
@@ -138,31 +138,31 @@ class HighColorStyle : public KStyle
 		                int len = -1,
 		                const TQColor *penColor = 0 ) const;
 
-		int pixelMetric( PixelMetric m, TQStyleControlElementData ceData, ControlElementFlags elementFlags, 
+		int pixelMetric( PixelMetric m, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, 
 					const TQWidget *widget = 0 ) const;
 
 		TQSize sizeFromContents( ContentsType contents,
-					TQStyleControlElementData ceData,
+					const TQStyleControlElementData &ceData,
 					ControlElementFlags elementFlags,
 					const TQSize &contentSize,
 					const TQStyleOption& opt,
 					const TQWidget *widget ) const;
 
-		TQRect subRect( SubRect r, const TQStyleControlElementData ceData, const ControlElementFlags elementFlags, 
+		TQRect subRect( SubRect r, const TQStyleControlElementData &ceData, const ControlElementFlags elementFlags, 
 					const TQWidget *widget ) const;
 
 		// Fix Qt3's wacky image positions
 		TQPixmap stylePixmap( StylePixmap stylepixmap,
-					TQStyleControlElementData ceData,
+					const TQStyleControlElementData &ceData,
 					ControlElementFlags elementFlags,
 					const TQStyleOption& = TQStyleOption::Default,
 					const TQWidget *widget = 0 ) const;
 
-		int styleHint(TQ_StyleHint, TQStyleControlElementData ceData, ControlElementFlags elementFlags,
+		int styleHint(TQ_StyleHint, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags,
 				const TQStyleOption & = TQStyleOption::Default,
 				TQStyleHintReturn * = 0, const TQWidget * = 0 ) const;
 
-		virtual bool objectEventHandler( TQStyleControlElementData ceData, ControlElementFlags elementFlags, void* source, TQEvent *e );
+		virtual bool objectEventHandler( const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, void* source, TQEvent *e );
 
 	protected:
 
diff --git a/kstyles/highcontrast/highcontrast.cpp b/kstyles/highcontrast/highcontrast.cpp
index 971c6549a..d212f7445 100644
--- a/kstyles/highcontrast/highcontrast.cpp
+++ b/kstyles/highcontrast/highcontrast.cpp
@@ -152,7 +152,7 @@ void HighContrastStyle::polish( TQPalette& pal )
 }
 
 
-void HighContrastStyle::polish (TQStyleControlElementData ceData, ControlElementFlags elementFlags, void *ptr)
+void HighContrastStyle::polish (const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, void *ptr)
 {
 	if (ceData.widgetObjectTypes.contains(TQWIDGET_OBJECT_NAME_STRING)) {
 		TQWidget *widget = reinterpret_cast<TQWidget*>(ptr);
@@ -179,7 +179,7 @@ void HighContrastStyle::polish (TQStyleControlElementData ceData, ControlElement
 }
 
 
-void HighContrastStyle::unPolish (TQStyleControlElementData ceData, ControlElementFlags elementFlags, void *ptr)
+void HighContrastStyle::unPolish (const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, void *ptr)
 {
 	if (ceData.widgetObjectTypes.contains(TQWIDGET_OBJECT_NAME_STRING)) {
 		TQWidget *widget = reinterpret_cast<TQWidget*>(ptr);
@@ -339,7 +339,7 @@ void HighContrastStyle::drawArrow (TQPainter* p, TQRect r, TQ_PrimitiveElement a
 // This function draws primitive elements
 void HighContrastStyle::drawPrimitive (TQ_PrimitiveElement pe,
 								TQPainter *p,
-								TQStyleControlElementData ceData,
+								const TQStyleControlElementData &ceData,
 								ControlElementFlags elementFlags,
 								const TQRect &r,
 								const TQColorGroup &cg,
@@ -695,7 +695,7 @@ void HighContrastStyle::drawPrimitive (TQ_PrimitiveElement pe,
 
 void HighContrastStyle::drawKStylePrimitive (KStylePrimitive kpe,
 										TQPainter* p,
-										TQStyleControlElementData ceData,
+										const TQStyleControlElementData &ceData,
 										ControlElementFlags elementFlags,
 										const TQRect &r,
 										const TQColorGroup &cg,
@@ -786,7 +786,7 @@ void HighContrastStyle::drawKStylePrimitive (KStylePrimitive kpe,
 
 void HighContrastStyle::drawControl (TQ_ControlElement element,
 								TQPainter *p,
-								TQStyleControlElementData ceData,
+								const TQStyleControlElementData &ceData,
 								ControlElementFlags elementFlags,
 								const TQRect &r,
 								const TQColorGroup &cg,
@@ -1164,7 +1164,7 @@ void HighContrastStyle::drawControl (TQ_ControlElement element,
 
 void HighContrastStyle::drawControlMask (TQ_ControlElement element,
 										TQPainter *p,
-										TQStyleControlElementData ceData,
+										const TQStyleControlElementData &ceData,
 										ControlElementFlags elementFlags,
 										const TQRect &r,
 										const TQStyleOption &opt,
@@ -1209,7 +1209,7 @@ static TQListViewItem* nextVisibleSibling(TQListViewItem* item)
 
 void HighContrastStyle::drawComplexControl (TQ_ComplexControl control,
 									TQPainter *p,
-									TQStyleControlElementData ceData,
+									const TQStyleControlElementData &ceData,
 									ControlElementFlags elementFlags,
 									const TQRect &r,
 									const TQColorGroup &cg,
@@ -1492,7 +1492,7 @@ void HighContrastStyle::drawComplexControl (TQ_ComplexControl control,
 
 void HighContrastStyle::drawComplexControlMask(TQ_ComplexControl c,
 											   TQPainter *p,
-											   const TQStyleControlElementData ceData,
+											   const TQStyleControlElementData &ceData,
 											   const ControlElementFlags elementFlags,
 											   const TQRect &r,
 											   const TQStyleOption &o,
@@ -1536,7 +1536,7 @@ void HighContrastStyle::drawItem( TQPainter *p,
 }
 
 TQRect HighContrastStyle::querySubControlMetrics( TQ_ComplexControl control,
-								  TQStyleControlElementData ceData,
+								  const TQStyleControlElementData &ceData,
 								  ControlElementFlags elementFlags,
 								  SubControl subcontrol,
 								  const TQStyleOption& opt,
@@ -1589,7 +1589,7 @@ TQRect HighContrastStyle::querySubControlMetrics( TQ_ComplexControl control,
 }
 
 
-int HighContrastStyle::pixelMetric(PixelMetric m, TQStyleControlElementData ceData, ControlElementFlags elementFlags, const TQWidget *widget) const
+int HighContrastStyle::pixelMetric(PixelMetric m, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, const TQWidget *widget) const
 {
 	//### TODO: Use the tab metrics changes from Ker.
 	switch(m)
@@ -1683,7 +1683,7 @@ int HighContrastStyle::pixelMetric(PixelMetric m, TQStyleControlElementData ceDa
 	}
 }
 
-int HighContrastStyle::kPixelMetric( KStylePixelMetric kpm, TQStyleControlElementData ceData, ControlElementFlags elementFlags, const TQWidget *widget ) const
+int HighContrastStyle::kPixelMetric( KStylePixelMetric kpm, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, const TQWidget *widget ) const
 {
 	switch (kpm) {
 		case KPM_ListViewBranchThickness:
@@ -1696,7 +1696,7 @@ int HighContrastStyle::kPixelMetric( KStylePixelMetric kpm, TQStyleControlElemen
 }
 
 TQSize HighContrastStyle::sizeFromContents( ContentsType contents,
-										TQStyleControlElementData ceData,
+										const TQStyleControlElementData &ceData,
 										ControlElementFlags elementFlags,
 										const TQSize &contentSize,
 										const TQStyleOption& opt,
@@ -1821,7 +1821,7 @@ TQSize HighContrastStyle::sizeFromContents( ContentsType contents,
 	}
 }
 
-TQRect HighContrastStyle::subRect (SubRect subrect, const TQStyleControlElementData ceData, const ControlElementFlags elementFlags, const TQWidget * widget) const
+TQRect HighContrastStyle::subRect (SubRect subrect, const TQStyleControlElementData &ceData, const ControlElementFlags elementFlags, const TQWidget * widget) const
 {
 	switch (subrect) {
 		case SR_ProgressBarGroove:
@@ -1833,13 +1833,13 @@ TQRect HighContrastStyle::subRect (SubRect subrect, const TQStyleControlElementD
 	}
 }
 
-bool HighContrastStyle::objectEventHandler( TQStyleControlElementData ceData, ControlElementFlags elementFlags, void* source, TQEvent *event )
+bool HighContrastStyle::objectEventHandler( const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, void* source, TQEvent *event )
 {
 	return KStyle::objectEventHandler (ceData, elementFlags, source, event);
 }
 
 /*! \reimp */
-int HighContrastStyle::styleHint(StyleHint sh, TQStyleControlElementData ceData, ControlElementFlags elementFlags, const TQStyleOption &opt, TQStyleHintReturn *returnData, const TQWidget *w) const
+int HighContrastStyle::styleHint(StyleHint sh, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, const TQStyleOption &opt, TQStyleHintReturn *returnData, const TQWidget *w) const
 {
 	int ret;
 
diff --git a/kstyles/highcontrast/highcontrast.h b/kstyles/highcontrast/highcontrast.h
index a01f733d7..89a716dc1 100644
--- a/kstyles/highcontrast/highcontrast.h
+++ b/kstyles/highcontrast/highcontrast.h
@@ -56,12 +56,12 @@ class HighContrastStyle : public KStyle
         
 		void polish( TQPalette& pal );        
 
-		void polish( TQStyleControlElementData ceData, ControlElementFlags elementFlags, void * );
-		void unPolish( TQStyleControlElementData ceData, ControlElementFlags elementFlags, void * );
+		void polish( const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, void * );
+		void unPolish( const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, void * );
 
 		void drawKStylePrimitive( KStylePrimitive kpe,
 					TQPainter* p,
-					TQStyleControlElementData ceData,
+					const TQStyleControlElementData &ceData,
 					ControlElementFlags elementFlags,
 					const TQRect &r,
 					const TQColorGroup &cg,
@@ -71,7 +71,7 @@ class HighContrastStyle : public KStyle
 
 		void drawPrimitive( TQ_PrimitiveElement pe,
 					TQPainter* p,
-					TQStyleControlElementData ceData,
+					const TQStyleControlElementData &ceData,
 					ControlElementFlags elementFlags,
 					const TQRect &r,
 					const TQColorGroup &cg,
@@ -80,7 +80,7 @@ class HighContrastStyle : public KStyle
 
 		void drawControl( TQ_ControlElement element,
 					TQPainter *p,
-					TQStyleControlElementData ceData,
+					const TQStyleControlElementData &ceData,
 					ControlElementFlags elementFlags,
 					const TQRect &r,
 					const TQColorGroup &cg,
@@ -90,7 +90,7 @@ class HighContrastStyle : public KStyle
 
 		void drawControlMask( TQ_ControlElement element,
 					TQPainter *p,
-					TQStyleControlElementData ceData,
+					const TQStyleControlElementData &ceData,
 					ControlElementFlags elementFlags,
 					const TQRect &r,
 					const TQStyleOption& = TQStyleOption::Default,
@@ -98,7 +98,7 @@ class HighContrastStyle : public KStyle
 
 		void drawComplexControl( TQ_ComplexControl control,
 					TQPainter *p,
-					TQStyleControlElementData ceData,
+					const TQStyleControlElementData &ceData,
 					ControlElementFlags elementFlags,
 					const TQRect &r,
 					const TQColorGroup &cg,
@@ -110,14 +110,14 @@ class HighContrastStyle : public KStyle
 
 		void drawComplexControlMask( TQ_ComplexControl control,
 					TQPainter *p,
-					const TQStyleControlElementData ceData,
+					const TQStyleControlElementData &ceData,
 					const ControlElementFlags elementFlags,
 					const TQRect &r,
 					const TQStyleOption& = TQStyleOption::Default,
 					const TQWidget *widget = 0 ) const;
 
 		TQRect querySubControlMetrics( TQ_ComplexControl control,
-					TQStyleControlElementData ceData,
+					const TQStyleControlElementData &ceData,
 					ControlElementFlags elementFlags,
 					SubControl subcontrol,
 					const TQStyleOption& opt = TQStyleOption::Default,
@@ -134,27 +134,27 @@ class HighContrastStyle : public KStyle
 					int len = -1,
 					const TQColor *penColor = 0 ) const;
 
-		int pixelMetric( PixelMetric m, TQStyleControlElementData ceData, ControlElementFlags elementFlags,
+		int pixelMetric( PixelMetric m, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags,
 					const TQWidget *widget = 0 ) const;
 
-		int kPixelMetric( KStylePixelMetric m, TQStyleControlElementData ceData, ControlElementFlags elementFlags,
+		int kPixelMetric( KStylePixelMetric m, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags,
 					const TQWidget *widget = 0 ) const;
 
 		TQSize sizeFromContents( ContentsType contents,
-					TQStyleControlElementData ceData,
+					const TQStyleControlElementData &ceData,
 					ControlElementFlags elementFlags,
 					const TQSize &contentSize,
 					const TQStyleOption& opt,
 					const TQWidget *widget = 0 ) const;
 
-		TQRect subRect (SubRect subrect, const TQStyleControlElementData ceData, const ControlElementFlags elementFlags, const TQWidget * widget) const;
+		TQRect subRect (SubRect subrect, const TQStyleControlElementData &ceData, const ControlElementFlags elementFlags, const TQWidget * widget) const;
 
-		int styleHint(TQ_StyleHint, TQStyleControlElementData ceData, ControlElementFlags elementFlags,
+		int styleHint(TQ_StyleHint, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags,
 					const TQStyleOption & = TQStyleOption::Default,
 					TQStyleHintReturn * = 0, const TQWidget * = 0 ) const;
 
 	protected:
-		virtual bool objectEventHandler( TQStyleControlElementData ceData, ControlElementFlags elementFlags, void* source, TQEvent *e );
+		virtual bool objectEventHandler( const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, void* source, TQEvent *e );
 
 	private:
 		void setColorsNormal (TQPainter* p, const TQColorGroup& cg, int flags = Style_Enabled, int highlight = Style_Down|Style_MouseOver) const;
diff --git a/kstyles/keramik/keramik.cpp b/kstyles/keramik/keramik.cpp
index 2c558b5b1..7105d81c5 100644
--- a/kstyles/keramik/keramik.cpp
+++ b/kstyles/keramik/keramik.cpp
@@ -189,7 +189,7 @@ void KeramikStyle::renderMenuBlendPixmap( KPixmap& pix, const TQColorGroup &cg,
 }
 
 // XXX
-TQRect KeramikStyle::subRect(SubRect r, const TQStyleControlElementData ceData, const ControlElementFlags elementFlags, const TQWidget *widget) const
+TQRect KeramikStyle::subRect(SubRect r, const TQStyleControlElementData &ceData, const ControlElementFlags elementFlags, const TQWidget *widget) const
 {
 	// We want the focus rect for buttons to be adjusted from
 	// the Qt3 defaults to be similar to Qt 2's defaults.
@@ -243,7 +243,7 @@ TQRect KeramikStyle::subRect(SubRect r, const TQStyleControlElementData ceData,
 
 
 TQPixmap KeramikStyle::stylePixmap(StylePixmap stylepixmap,
-									TQStyleControlElementData ceData,
+									const TQStyleControlElementData &ceData,
 									ControlElementFlags elementFlags,
 									const TQStyleOption& opt,
 									const TQWidget* widget) const
@@ -327,7 +327,7 @@ KeramikStyle::~KeramikStyle()
 	KeramikDbCleanup();
 }
 
-void KeramikStyle::applicationPolish(TQStyleControlElementData ceData, ControlElementFlags, void *ptr)
+void KeramikStyle::applicationPolish(const TQStyleControlElementData &ceData, ControlElementFlags, void *ptr)
 {
     if (ceData.widgetObjectTypes.contains(TQAPPLICATION_OBJECT_NAME_STRING)) {
 		TQApplication *app = reinterpret_cast<TQApplication*>(ptr);
@@ -337,7 +337,7 @@ void KeramikStyle::applicationPolish(TQStyleControlElementData ceData, ControlEl
 	}
 }
 
-void KeramikStyle::polish(TQStyleControlElementData ceData, ControlElementFlags elementFlags, void *ptr)
+void KeramikStyle::polish(const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, void *ptr)
 {
 	if (ceData.widgetObjectTypes.contains(TQWIDGET_OBJECT_NAME_STRING)) {
 		TQWidget *widget = reinterpret_cast<TQWidget*>(ptr);
@@ -382,7 +382,7 @@ void KeramikStyle::polish(TQStyleControlElementData ceData, ControlElementFlags
 	KStyle::polish(ceData, elementFlags, ptr);
 }
 
-void KeramikStyle::unPolish(TQStyleControlElementData ceData, ControlElementFlags elementFlags, void *ptr)
+void KeramikStyle::unPolish(const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, void *ptr)
 {
 	if (ceData.widgetObjectTypes.contains(TQWIDGET_OBJECT_NAME_STRING)) {
 		TQWidget *widget = reinterpret_cast<TQWidget*>(ptr);
@@ -479,7 +479,7 @@ static void renderToolbarEntryBackground(TQPainter* paint,
 		toolWidth, toolHeight);
 }
 
-static void renderToolbarWidgetBackground(TQPainter* painter, const TQStyleControlElementData ceData, const TQStyle::ControlElementFlags elementFlags, const TQWidget* widget)
+static void renderToolbarWidgetBackground(TQPainter* painter, const TQStyleControlElementData &ceData, const TQStyle::ControlElementFlags elementFlags, const TQWidget* widget)
 {
 	// Draw a gradient background for custom widgets in the toolbar
 	// that have specified a "kde toolbar widget" name, or
@@ -545,7 +545,7 @@ static void renderToolbarWidgetBackground(TQPainter* painter, const TQStyleContr
 // This function draws primitive elements as well as their masks.
 void KeramikStyle::drawPrimitive( TQ_PrimitiveElement pe,
 									TQPainter *p,
-									TQStyleControlElementData ceData,
+									const TQStyleControlElementData &ceData,
 									ControlElementFlags elementFlags,
 									const TQRect &r,
 									const TQColorGroup &cg,
@@ -1222,7 +1222,7 @@ void KeramikStyle::drawPrimitive( TQ_PrimitiveElement pe,
 
 void KeramikStyle::drawKStylePrimitive( KStylePrimitive kpe,
 										  TQPainter* p,
-										  TQStyleControlElementData ceData,
+										  const TQStyleControlElementData &ceData,
 										  ControlElementFlags elementFlags,
 										  const TQRect &r,
 										  const TQColorGroup &cg,
@@ -1354,7 +1354,7 @@ void KeramikStyle::drawKStylePrimitive( KStylePrimitive kpe,
 	}
 }
 
-bool KeramikStyle::isFormWidget(const TQStyleControlElementData ceData, const ControlElementFlags elementFlags, const TQWidget* widget) const
+bool KeramikStyle::isFormWidget(const TQStyleControlElementData &ceData, const ControlElementFlags elementFlags, const TQWidget* widget) const
 {
 	if (widget) {
 		//Form widgets are in the KHTMLView, but that has 2 further inner levels
@@ -1381,7 +1381,7 @@ bool KeramikStyle::isFormWidget(const TQStyleControlElementData ceData, const Co
 
 void KeramikStyle::drawControl( TQ_ControlElement element,
 								  TQPainter *p,
-								  TQStyleControlElementData ceData,
+								  const TQStyleControlElementData &ceData,
 								  ControlElementFlags elementFlags,
 								  const TQRect &r,
 								  const TQColorGroup &cg,
@@ -1964,7 +1964,7 @@ void KeramikStyle::drawControl( TQ_ControlElement element,
 
 void KeramikStyle::drawControlMask( TQ_ControlElement element,
 								    TQPainter *p,
-								    TQStyleControlElementData ceData,
+								    const TQStyleControlElementData &ceData,
 								    ControlElementFlags elementFlags,
 								    const TQRect &r,
 								    const TQStyleOption& opt,
@@ -1976,7 +1976,7 @@ void KeramikStyle::drawControlMask( TQ_ControlElement element,
 	maskMode = false;
 }
 
-bool KeramikStyle::isSizeConstrainedCombo(const TQStyleControlElementData ceData, const ControlElementFlags elementFlags, const TQComboBox* combo) const
+bool KeramikStyle::isSizeConstrainedCombo(const TQStyleControlElementData &ceData, const ControlElementFlags elementFlags, const TQComboBox* combo) const
 {
 	if (ceData.rect.width() >= 80)
 		return false;
@@ -1996,7 +1996,7 @@ bool KeramikStyle::isSizeConstrainedCombo(const TQStyleControlElementData ceData
 
 void KeramikStyle::drawComplexControl( TQ_ComplexControl control,
                                          TQPainter *p,
-                                         TQStyleControlElementData ceData,
+                                         const TQStyleControlElementData &ceData,
                                          ControlElementFlags elementFlags,
                                          const TQRect &r,
                                          const TQColorGroup &cg,
@@ -2362,7 +2362,7 @@ void KeramikStyle::drawComplexControl( TQ_ComplexControl control,
 
 void KeramikStyle::drawComplexControlMask( TQ_ComplexControl control,
                                          TQPainter *p,
-                                         const TQStyleControlElementData ceData,
+                                         const TQStyleControlElementData &ceData,
                                          const ControlElementFlags elementFlags,
                                          const TQRect &r,
                                          const TQStyleOption& opt,
@@ -2382,7 +2382,7 @@ void KeramikStyle::drawComplexControlMask( TQ_ComplexControl control,
 
 }
 
-int KeramikStyle::pixelMetric(PixelMetric m, TQStyleControlElementData ceData, ControlElementFlags elementFlags, const TQWidget *widget) const
+int KeramikStyle::pixelMetric(PixelMetric m, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, const TQWidget *widget) const
 {
 	switch(m)
 	{
@@ -2463,7 +2463,7 @@ int KeramikStyle::pixelMetric(PixelMetric m, TQStyleControlElementData ceData, C
 
 
 TQSize KeramikStyle::sizeFromContents( ContentsType contents,
-										TQStyleControlElementData ceData,
+										const TQStyleControlElementData &ceData,
 										ControlElementFlags elementFlags,
 										const TQSize &contentSize,
 										const TQStyleOption& opt,
@@ -2574,7 +2574,7 @@ TQSize KeramikStyle::sizeFromContents( ContentsType contents,
 
 
 TQStyle::SubControl KeramikStyle::querySubControl( TQ_ComplexControl control,
-                                                  TQStyleControlElementData ceData,
+                                                  const TQStyleControlElementData &ceData,
                                                   ControlElementFlags elementFlags,
                                                   const TQPoint& point,
                                                   const TQStyleOption& opt,
@@ -2594,7 +2594,7 @@ TQStyle::SubControl KeramikStyle::querySubControl( TQ_ComplexControl control,
 }
 
 TQRect KeramikStyle::querySubControlMetrics( TQ_ComplexControl control,
-	                              TQStyleControlElementData ceData,
+	                              const TQStyleControlElementData &ceData,
 	                              ControlElementFlags elementFlags,
 	                              SubControl subcontrol,
 	                              const TQStyleOption& opt,
@@ -2789,7 +2789,7 @@ TQRect KeramikStyle::querySubControlMetrics( TQ_ComplexControl control,
 #undef   KeyRelease
 #endif
 
-bool KeramikStyle::objectEventHandler( TQStyleControlElementData ceData, ControlElementFlags elementFlags, void* source, TQEvent *event )
+bool KeramikStyle::objectEventHandler( const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, void* source, TQEvent *event )
 {
 	if (KStyle::objectEventHandler( ceData, elementFlags, source, event ))
 		return true;
@@ -2973,7 +2973,7 @@ bool KeramikStyle::objectEventHandler( TQStyleControlElementData ceData, Control
 }
 
 /*! \reimp */
-int KeramikStyle::styleHint(StyleHint sh, TQStyleControlElementData ceData, ControlElementFlags elementFlags, const TQStyleOption &opt, TQStyleHintReturn *returnData, const TQWidget *w) const
+int KeramikStyle::styleHint(StyleHint sh, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, const TQStyleOption &opt, TQStyleHintReturn *returnData, const TQWidget *w) const
 {
 	int ret;
 
diff --git a/kstyles/keramik/keramik.h b/kstyles/keramik/keramik.h
index 53c06a3b4..5acaabf8d 100644
--- a/kstyles/keramik/keramik.h
+++ b/kstyles/keramik/keramik.h
@@ -48,16 +48,16 @@ public:
 	virtual ~KeramikStyle();
 
 	void renderMenuBlendPixmap( KPixmap& pix, const TQColorGroup &cg, const TQPopupMenu* ) const;
-	TQPixmap stylePixmap(StylePixmap stylepixmap, TQStyleControlElementData ceData, ControlElementFlags elementFlags, const TQStyleOption& opt, const TQWidget* widget = 0) const;
+	TQPixmap stylePixmap(StylePixmap stylepixmap, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, const TQStyleOption& opt, const TQWidget* widget = 0) const;
 
-	void polish( TQStyleControlElementData ceData, ControlElementFlags elementFlags, void * );
-	void unPolish( TQStyleControlElementData ceData, ControlElementFlags elementFlags, void * );
+	void polish( const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, void * );
+	void unPolish( const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, void * );
 	void polish( TQPalette& );
-	void applicationPolish( TQStyleControlElementData ceData, ControlElementFlags elementFlags, void * );
+	void applicationPolish( const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, void * );
 
 	void drawKStylePrimitive( KStylePrimitive kpe,
 	                          TQPainter* p,
-	                          TQStyleControlElementData ceData,
+	                          const TQStyleControlElementData &ceData,
 	                          ControlElementFlags elementFlags,
 	                          const TQRect& r,
 	                          const TQColorGroup& cg,
@@ -67,7 +67,7 @@ public:
 
 	void drawPrimitive( TQ_PrimitiveElement pe,
 	                    TQPainter* p,
-	                    TQStyleControlElementData ceData,
+	                    const TQStyleControlElementData &ceData,
 	                    ControlElementFlags elementFlags,
 	                    const TQRect& r,
 	                    const TQColorGroup& cg,
@@ -76,7 +76,7 @@ public:
 
 	void drawControl( TQ_ControlElement element,
 	                  TQPainter* p,
-	                  TQStyleControlElementData ceData,
+	                  const TQStyleControlElementData &ceData,
 	                  ControlElementFlags elementFlags,
 	                  const TQRect& r,
 	                  const TQColorGroup& cg,
@@ -86,7 +86,7 @@ public:
 
 	void drawControlMask( TQ_ControlElement element,
 	                      TQPainter* p,
-	                      TQStyleControlElementData ceData,
+	                      const TQStyleControlElementData &ceData,
 	                      ControlElementFlags elementFlags,
 	                      const TQRect& r,
 	                      const TQStyleOption& opt = TQStyleOption::Default,
@@ -94,7 +94,7 @@ public:
 
 	void drawComplexControl( TQ_ComplexControl control,
 	                         TQPainter* p,
-	                         TQStyleControlElementData ceData,
+	                         const TQStyleControlElementData &ceData,
 	                         ControlElementFlags elementFlags,
 	                         const TQRect& r,
 	                         const TQColorGroup& cg,
@@ -106,36 +106,36 @@ public:
 
 	void drawComplexControlMask( TQ_ComplexControl control,
 	                             TQPainter* p,
-	                             const TQStyleControlElementData ceData,
+	                             const TQStyleControlElementData &ceData,
 	                             const ControlElementFlags elementFlags,
 	                             const TQRect& r,
 	                             const TQStyleOption& = TQStyleOption::Default,
 	                             const TQWidget* widget = 0 ) const;
 
-	int pixelMetric( PixelMetric m, TQStyleControlElementData ceData, ControlElementFlags elementFlags, const TQWidget* widget = 0 ) const;
+	int pixelMetric( PixelMetric m, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, const TQWidget* widget = 0 ) const;
 
 	TQSize sizeFromContents( ContentsType contents,
-	                        TQStyleControlElementData ceData,
+	                        const TQStyleControlElementData &ceData,
 	                        ControlElementFlags elementFlags,
 	                        const TQSize& contentSize,
 	                        const TQStyleOption& opt,
 	                        const TQWidget* widget = 0 ) const;
 
 	SubControl querySubControl( TQ_ComplexControl control,
-	                            TQStyleControlElementData ceData,
+	                            const TQStyleControlElementData &ceData,
 	                            ControlElementFlags elementFlags,
 	                            const TQPoint& point,
 						        const TQStyleOption& opt = TQStyleOption::Default,
 	                            const TQWidget* widget = 0 ) const;
 
 	TQRect querySubControlMetrics( TQ_ComplexControl control,
-	                              TQStyleControlElementData ceData,
+	                              const TQStyleControlElementData &ceData,
 	                              ControlElementFlags elementFlags,
 	                              SubControl subcontrol,
 	                              const TQStyleOption& opt = TQStyleOption::Default,
 	                              const TQWidget* widget = 0 ) const;
 
-	int styleHint(TQ_StyleHint, TQStyleControlElementData ceData, ControlElementFlags elementFlags,
+	int styleHint(TQ_StyleHint, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags,
 			const TQStyleOption & = TQStyleOption::Default,
 			TQStyleHintReturn * = 0, const TQWidget * = 0 ) const;
 
@@ -146,8 +146,8 @@ private slots:
 
 private:
 
-	bool isSizeConstrainedCombo(const TQStyleControlElementData ceData, const ControlElementFlags elementFlags, const TQComboBox* widget) const;
-	bool isFormWidget          (const TQStyleControlElementData ceData, const ControlElementFlags elementFlags, const TQWidget* widget) const;
+	bool isSizeConstrainedCombo(const TQStyleControlElementData &ceData, const ControlElementFlags elementFlags, const TQComboBox* widget) const;
+	bool isFormWidget          (const TQStyleControlElementData &ceData, const ControlElementFlags elementFlags, const TQWidget* widget) const;
 
 	///Configuration settings
 	bool animateProgressBar;
@@ -181,7 +181,7 @@ private:
 	//Animation support.
 	TQMap<TQProgressBar*, int> progAnimWidgets;
 
-	virtual bool objectEventHandler( TQStyleControlElementData ceData, ControlElementFlags elementFlags, void* source, TQEvent *e );
+	virtual bool objectEventHandler( const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, void* source, TQEvent *e );
 
 	Keramik::TilePainter::PaintMode pmode() const
 	{
@@ -213,7 +213,7 @@ private:
 	// For progress bar animation
 	TQTimer *animationTimer;
 
-	TQRect subRect(SubRect r, const TQStyleControlElementData ceData, const ControlElementFlags elementFlags, const TQWidget *widget) const;
+	TQRect subRect(SubRect r, const TQStyleControlElementData &ceData, const ControlElementFlags elementFlags, const TQWidget *widget) const;
 
 	// Disable copy constructor and = operator
 	KeramikStyle( const KeramikStyle&  );
diff --git a/kstyles/kthemestyle/kthemebase.h b/kstyles/kthemestyle/kthemebase.h
index b0ebbfaff..3e2019383 100644
--- a/kstyles/kthemestyle/kthemebase.h
+++ b/kstyles/kthemestyle/kthemebase.h
@@ -508,12 +508,12 @@ protected:
     /**
     These are included for fuuture extension purposes..
     */
-    virtual int pixelMetric ( PixelMetric metric, TQStyleControlElementData ceData, ControlElementFlags elementFlags, const TQWidget * widget = 0 ) const
+    virtual int pixelMetric ( PixelMetric metric, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, const TQWidget * widget = 0 ) const
     {
         return KStyle::pixelMetric( metric, ceData, elementFlags, widget );
     }
 
-    virtual void drawPrimitive ( PrimitiveElement pe, TQPainter * p, TQStyleControlElementData ceData, ControlElementFlags elementFlags, const TQRect & r, const TQColorGroup & cg,
+    virtual void drawPrimitive ( PrimitiveElement pe, TQPainter * p, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, const TQRect & r, const TQColorGroup & cg,
                                  SFlags flags = Style_Default,
                                  const TQStyleOption& option = TQStyleOption::Default ) const
     {
@@ -524,7 +524,7 @@ protected:
 
     virtual void drawControl( TQ_ControlElement element,
                               TQPainter *p,
-                              TQStyleControlElementData ceData,
+                              const TQStyleControlElementData &ceData,
                               ControlElementFlags elementFlags,
                               const TQRect &r,
                               const TQColorGroup &cg,
@@ -538,7 +538,7 @@ protected:
 
     virtual void drawControlMask( TQ_ControlElement element,
                                   TQPainter *p,
-                                  TQStyleControlElementData ceData,
+                                  const TQStyleControlElementData &ceData,
                                   ControlElementFlags elementFlags,
                                   const TQRect &r,
                                   const TQStyleOption& opt = TQStyleOption::Default,
@@ -550,7 +550,7 @@ protected:
 
     virtual void drawComplexControl( TQ_ComplexControl control,
                                      TQPainter *p,
-                                     TQStyleControlElementData ceData,
+                                     const TQStyleControlElementData &ceData,
                                      ControlElementFlags elementFlags,
                                      const TQRect &r,
                                      const TQColorGroup &cg,
@@ -566,7 +566,7 @@ protected:
 
     virtual void drawKStylePrimitive( KStylePrimitive kpe,
                                       TQPainter* p,
-                                      TQStyleControlElementData ceData,
+                                      const TQStyleControlElementData &ceData,
                                       ControlElementFlags elementFlags,
                                       const TQRect &r,
                                       const TQColorGroup &cg,
@@ -580,7 +580,7 @@ protected:
     }
 
 
-    virtual int styleHint( StyleHint sh, TQStyleControlElementData ceData, ControlElementFlags elementFlags,
+    virtual int styleHint( StyleHint sh, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags,
                            const TQStyleOption& opt = TQStyleOption::Default,
                            TQStyleHintReturn* returnData = 0,
                            const TQWidget *widget = 0 ) const
@@ -594,7 +594,7 @@ protected:
     }
 
     virtual TQSize sizeFromContents( ContentsType contents,
-                                    TQStyleControlElementData ceData,
+                                    const TQStyleControlElementData &ceData,
                                     ControlElementFlags elementFlags,
                                     const TQSize &contentsSize,
                                     const TQStyleOption& opt = TQStyleOption::Default,
diff --git a/kstyles/kthemestyle/kthemestyle.cpp b/kstyles/kthemestyle/kthemestyle.cpp
index d6da82173..ff7199939 100644
--- a/kstyles/kthemestyle/kthemestyle.cpp
+++ b/kstyles/kthemestyle/kthemestyle.cpp
@@ -161,7 +161,7 @@ public:
 KDE_Q_EXPORT_PLUGIN( KThemeStylePlugin )
 
 
-void kDrawWindowsArrow ( TQPainter *p, const TQStyleControlElementData ceData, const TQStyle::ControlElementFlags elementFlags, const TQStyle* style, TQStyle::PrimitiveElement pe, bool down,
+void kDrawWindowsArrow ( TQPainter *p, const TQStyleControlElementData &ceData, const TQStyle::ControlElementFlags elementFlags, const TQStyle* style, TQStyle::PrimitiveElement pe, bool down,
                          int x, int y, int w, int h,
                          const TQColorGroup &cg, bool enabled )
 {
@@ -213,7 +213,7 @@ void kDrawWindowsArrow ( TQPainter *p, const TQStyleControlElementData ceData, c
 
 
 TQSize KThemeStyle::sizeFromContents( ContentsType contents,
-                                     TQStyleControlElementData ceData,
+                                     const TQStyleControlElementData &ceData,
                                      ControlElementFlags elementFlags,
                                      const TQSize &contentSize,
                                      const TQStyleOption& opt,
@@ -311,7 +311,7 @@ TQSize KThemeStyle::sizeFromContents( ContentsType contents,
 }
 
 
-TQRect KThemeStyle::subRect(SubRect sr, const TQStyleControlElementData ceData, const ControlElementFlags elementFlags, const TQWidget* widget) const
+TQRect KThemeStyle::subRect(SubRect sr, const TQStyleControlElementData &ceData, const ControlElementFlags elementFlags, const TQWidget* widget) const
 {
     if (sr == SR_CheckBoxFocusRect)
     {
@@ -333,7 +333,7 @@ TQRect KThemeStyle::subRect(SubRect sr, const TQStyleControlElementData ceData,
     return KStyle::subRect(sr, ceData, elementFlags, widget);
 }
 
-int KThemeStyle::pixelMetric ( PixelMetric metric, TQStyleControlElementData ceData, ControlElementFlags elementFlags, const TQWidget * widget ) const
+int KThemeStyle::pixelMetric ( PixelMetric metric, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, const TQWidget * widget ) const
 {
     switch ( metric )
     {
@@ -420,7 +420,7 @@ KThemeStyle::~KThemeStyle()
 }
 
 
-void KThemeStyle::applicationPolish( TQStyleControlElementData ceData, ControlElementFlags, void *ptr )
+void KThemeStyle::applicationPolish( const TQStyleControlElementData &ceData, ControlElementFlags, void *ptr )
 {
     if (ceData.widgetObjectTypes.contains(TQAPPLICATION_OBJECT_NAME_STRING)) {
         TQApplication *app = reinterpret_cast<TQApplication*>(ptr);
@@ -468,7 +468,7 @@ void KThemeStyle::paletteChanged()
 }
 
 
-void KThemeStyle::applicationUnPolish( TQStyleControlElementData ceData, ControlElementFlags, void *ptr )
+void KThemeStyle::applicationUnPolish( const TQStyleControlElementData &ceData, ControlElementFlags, void *ptr )
 {
     if (ceData.widgetObjectTypes.contains(TQAPPLICATION_OBJECT_NAME_STRING)) {
         TQApplication *app = reinterpret_cast<TQApplication*>(ptr);
@@ -476,7 +476,7 @@ void KThemeStyle::applicationUnPolish( TQStyleControlElementData ceData, Control
     }
 }
 
-bool KThemeStyle::objectEventHandler( TQStyleControlElementData ceData, ControlElementFlags elementFlags, void* source, TQEvent *event )
+bool KThemeStyle::objectEventHandler( const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, void* source, TQEvent *event )
 {
     if (ceData.widgetObjectTypes.contains(TQOBJECT_OBJECT_NAME_STRING)) {
         TQObject* object = reinterpret_cast<TQObject*>(source);
@@ -518,7 +518,7 @@ bool KThemeStyle::objectEventHandler( TQStyleControlElementData ceData, ControlE
     return KStyle::objectEventHandler(ceData, elementFlags, source, event);
 }
 
-void KThemeStyle::polish( TQStyleControlElementData ceData, ControlElementFlags elementFlags, void *ptr )
+void KThemeStyle::polish( const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, void *ptr )
 {
     if (ceData.widgetObjectTypes.contains(TQWIDGET_OBJECT_NAME_STRING)) {
         TQWidget *w = reinterpret_cast<TQWidget*>(ptr);
@@ -629,7 +629,7 @@ void KThemeStyle::polish( TQStyleControlElementData ceData, ControlElementFlags
     KStyle::polish( ceData, elementFlags, ptr );
 }
 
-void KThemeStyle::unPolish( TQStyleControlElementData ceData, ControlElementFlags elementFlags, void *ptr )
+void KThemeStyle::unPolish( const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, void *ptr )
 {
     if (ceData.widgetObjectTypes.contains(TQWIDGET_OBJECT_NAME_STRING)) {
         TQWidget *w = reinterpret_cast<TQWidget*>(ptr);
@@ -727,7 +727,7 @@ void KThemeStyle::drawBaseButton( TQPainter *p, int x, int y, int w, int h,
     p->setPen( oldPen );
 }
 
-void KThemeStyle::drawPrimitive ( PrimitiveElement pe, TQPainter * p, TQStyleControlElementData ceData, ControlElementFlags elementFlags, const TQRect & r, const TQColorGroup & g_base,
+void KThemeStyle::drawPrimitive ( PrimitiveElement pe, TQPainter * p, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, const TQRect & r, const TQColorGroup & g_base,
                                   SFlags flags, const TQStyleOption & opt ) const
 {
     bool handled = false;
@@ -1163,7 +1163,7 @@ TQPixmap* KThemeStyle::makeMenuBarCache(int w, int h) const
 
 void KThemeStyle::drawControl( ControlElement element,
                                TQPainter *p,
-                               TQStyleControlElementData ceData,
+                               const TQStyleControlElementData &ceData,
                                ControlElementFlags elementFlags,
                                const TQRect &r,
                                const TQColorGroup &cg,
@@ -1801,7 +1801,7 @@ void KThemeStyle::drawControl( ControlElement element,
 
 void KThemeStyle::drawControlMask( ControlElement element,
                                    TQPainter *p,
-                                   TQStyleControlElementData ceData,
+                                   const TQStyleControlElementData &ceData,
                                    ControlElementFlags elementFlags,
                                    const TQRect &r,
                                    const TQStyleOption& opt,
@@ -1833,7 +1833,7 @@ void KThemeStyle::drawControlMask( ControlElement element,
 
 void KThemeStyle::drawKStylePrimitive( KStylePrimitive kpe,
                                        TQPainter* p,
-                                       TQStyleControlElementData ceData,
+                                       const TQStyleControlElementData &ceData,
                                        ControlElementFlags elementFlags,
                                        const TQRect &r,
                                        const TQColorGroup &cg,
@@ -2013,7 +2013,7 @@ void KThemeStyle::drawKStylePrimitive( KStylePrimitive kpe,
 
 
 
-void KThemeStyle::drawComplexControl ( TQ_ComplexControl control, TQPainter * p, TQStyleControlElementData ceData, ControlElementFlags elementFlags,
+void KThemeStyle::drawComplexControl ( TQ_ComplexControl control, TQPainter * p, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags,
                                        const TQRect & r, const TQColorGroup & g, SFlags how ,
                                        SCFlags controls, SCFlags active,
                                        const TQStyleOption & opt, const TQWidget * widget ) const
@@ -2247,7 +2247,7 @@ void KThemeStyle::drawBaseMask( TQPainter *p, int x, int y, int w, int h,
         p->fillRect( x, y, w, h, fillBrush );
 }
 
-int KThemeStyle::styleHint( StyleHint sh, TQStyleControlElementData ceData, ControlElementFlags elementFlags, const TQStyleOption &opt, TQStyleHintReturn *shr, const TQWidget *w ) const
+int KThemeStyle::styleHint( StyleHint sh, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, const TQStyleOption &opt, TQStyleHintReturn *shr, const TQWidget *w ) const
 {
     switch ( sh )
     {
diff --git a/kstyles/kthemestyle/kthemestyle.h b/kstyles/kthemestyle/kthemestyle.h
index d6e28afc2..457064a56 100644
--- a/kstyles/kthemestyle/kthemestyle.h
+++ b/kstyles/kthemestyle/kthemestyle.h
@@ -79,15 +79,15 @@ public:
     KThemeStyle( const TQString& configDir, const TQString &configFile = TQString::null );
     ~KThemeStyle();
 
-    virtual int pixelMetric ( PixelMetric metric, TQStyleControlElementData ceData, ControlElementFlags elementFlags, const TQWidget * widget = 0 ) const;
+    virtual int pixelMetric ( PixelMetric metric, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, const TQWidget * widget = 0 ) const;
 
-    virtual void drawPrimitive ( PrimitiveElement pe, TQPainter * p, TQStyleControlElementData ceData, ControlElementFlags elementFlags, const TQRect & r, const TQColorGroup & cg,
+    virtual void drawPrimitive ( PrimitiveElement pe, TQPainter * p, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, const TQRect & r, const TQColorGroup & cg,
                                  SFlags flags = Style_Default,
                                  const TQStyleOption& = TQStyleOption::Default ) const;
 
     virtual void drawControl( ControlElement element,
                               TQPainter *p,
-                              TQStyleControlElementData ceData,
+                              const TQStyleControlElementData &ceData,
                               ControlElementFlags elementFlags,
                               const TQRect &r,
                               const TQColorGroup &cg,
@@ -97,7 +97,7 @@ public:
 
     virtual void drawControlMask( ControlElement element,
                                   TQPainter *p,
-                                  TQStyleControlElementData ceData,
+                                  const TQStyleControlElementData &ceData,
                                   ControlElementFlags elementFlags,
                                   const TQRect &r,
                                   const TQStyleOption& = TQStyleOption::Default,
@@ -106,7 +106,7 @@ public:
 
     virtual void drawComplexControl( TQ_ComplexControl control,
                                      TQPainter *p,
-                                     TQStyleControlElementData ceData,
+                                     const TQStyleControlElementData &ceData,
                                      ControlElementFlags elementFlags,
                                      const TQRect &r,
                                      const TQColorGroup &cg,
@@ -118,7 +118,7 @@ public:
 
     virtual void drawKStylePrimitive( KStylePrimitive kpe,
                                       TQPainter* p,
-                                      TQStyleControlElementData ceData,
+                                      const TQStyleControlElementData &ceData,
                                       ControlElementFlags elementFlags,
                                       const TQRect &r,
                                       const TQColorGroup &cg,
@@ -128,30 +128,30 @@ public:
 
 
     virtual int styleHint( StyleHint sh,
-                           TQStyleControlElementData ceData,
+                           const TQStyleControlElementData &ceData,
                            ControlElementFlags elementFlags,
                            const TQStyleOption& = TQStyleOption::Default,
                            TQStyleHintReturn* returnData = 0,
                            const TQWidget *widget = 0 ) const;
 
     virtual TQSize sizeFromContents( ContentsType contents,
-                                    TQStyleControlElementData ceData,
+                                    const TQStyleControlElementData &ceData,
                                     ControlElementFlags elementFlags,
                                     const TQSize &contentsSize,
                                     const TQStyleOption& = TQStyleOption::Default,
                                     const TQWidget *widget = 0 ) const;
 
-    virtual TQRect subRect(SubRect, const TQStyleControlElementData ceData, const ControlElementFlags elementFlags, const TQWidget *) const;
+    virtual TQRect subRect(SubRect, const TQStyleControlElementData &ceData, const ControlElementFlags elementFlags, const TQWidget *) const;
 
-    virtual void polish( TQStyleControlElementData ceData, ControlElementFlags elementFlags, void * );
-    virtual void unPolish( TQStyleControlElementData ceData, ControlElementFlags elementFlags, void * );
-    virtual bool objectEventHandler( TQStyleControlElementData ceData, ControlElementFlags elementFlags, void* source, TQEvent *e );
+    virtual void polish( const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, void * );
+    virtual void unPolish( const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, void * );
+    virtual bool objectEventHandler( const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, void* source, TQEvent *e );
     /**
      * By default this just sets the background brushes to the pixmapped
      * background.
      */
-    virtual void applicationPolish( TQStyleControlElementData ceData, ControlElementFlags elementFlags, void * );
-    virtual void applicationUnPolish( TQStyleControlElementData ceData, ControlElementFlags elementFlags, void * );
+    virtual void applicationPolish( const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, void * );
+    virtual void applicationUnPolish( const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, void * );
 
     /** \internal */
     // to make it possible for derived classes to overload this function
diff --git a/kstyles/light/lightstyle-v2.cpp b/kstyles/light/lightstyle-v2.cpp
index 0a41317f4..ef71e3c7f 100644
--- a/kstyles/light/lightstyle-v2.cpp
+++ b/kstyles/light/lightstyle-v2.cpp
@@ -83,7 +83,7 @@ LightStyleV2::~LightStyleV2()
     }
 }
 
-void LightStyleV2::polishPopupMenu( TQStyleControlElementData ceData, ControlElementFlags elementFlags, void *ptr )
+void LightStyleV2::polishPopupMenu( const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, void *ptr )
 {
     KStyle::polishPopupMenu(ceData, elementFlags, ptr);
 }
@@ -131,7 +131,7 @@ static void drawLightBevel(TQPainter *p, const TQRect &r, const TQColorGroup &cg
 
 void LightStyleV2::drawPrimitive( TQ_PrimitiveElement pe,
 				TQPainter *p,
-				TQStyleControlElementData ceData,
+				const TQStyleControlElementData &ceData,
 				ControlElementFlags elementFlags,
 				const TQRect &r,
 				const TQColorGroup &cg,
@@ -644,7 +644,7 @@ void LightStyleV2::drawPrimitive( TQ_PrimitiveElement pe,
 
 void LightStyleV2::drawControl( TQ_ControlElement control,
 			      TQPainter *p,
-			      TQStyleControlElementData ceData,
+			      const TQStyleControlElementData &ceData,
 			      ControlElementFlags elementFlags,
 			      const TQRect &r,
 			      const TQColorGroup &cg,
@@ -1001,7 +1001,7 @@ void LightStyleV2::drawControl( TQ_ControlElement control,
 
 void LightStyleV2::drawControlMask( TQ_ControlElement control,
 				  TQPainter *p,
-				  TQStyleControlElementData ceData,
+				  const TQStyleControlElementData &ceData,
 				  ControlElementFlags elementFlags,
 				  const TQRect &r,
 				  const TQStyleOption &data,
@@ -1018,7 +1018,7 @@ void LightStyleV2::drawControlMask( TQ_ControlElement control,
     }
 }
 
-TQRect LightStyleV2::subRect(SubRect subrect, const TQStyleControlElementData ceData, const ControlElementFlags elementFlags, const TQWidget *widget) const
+TQRect LightStyleV2::subRect(SubRect subrect, const TQStyleControlElementData &ceData, const ControlElementFlags elementFlags, const TQWidget *widget) const
 {
     TQRect rect, wrect(ceData.rect);
 
@@ -1047,7 +1047,7 @@ TQRect LightStyleV2::subRect(SubRect subrect, const TQStyleControlElementData ce
 
 void LightStyleV2::drawComplexControl( TQ_ComplexControl control,
 				     TQPainter* p,
-				     TQStyleControlElementData ceData,
+				     const TQStyleControlElementData &ceData,
 				     ControlElementFlags elementFlags,
 				     const TQRect& r,
 				     const TQColorGroup& cg,
@@ -1330,7 +1330,7 @@ void LightStyleV2::drawComplexControl( TQ_ComplexControl control,
 }
 
 TQRect LightStyleV2::querySubControlMetrics( TQ_ComplexControl control,
-					  TQStyleControlElementData ceData,
+					  const TQStyleControlElementData &ceData,
 					  ControlElementFlags elementFlags,
 					  SubControl sc,
 					  const TQStyleOption &data,
@@ -1425,7 +1425,7 @@ TQRect LightStyleV2::querySubControlMetrics( TQ_ComplexControl control,
 }
 
 TQStyle::SubControl LightStyleV2::querySubControl( TQ_ComplexControl control,
-						TQStyleControlElementData ceData,
+						const TQStyleControlElementData &ceData,
 						ControlElementFlags elementFlags,
 						const TQPoint &pos,
 						const TQStyleOption &data,
@@ -1442,7 +1442,7 @@ TQStyle::SubControl LightStyleV2::querySubControl( TQ_ComplexControl control,
     return ret;
 }
 
-int LightStyleV2::pixelMetric( PixelMetric metric, TQStyleControlElementData ceData, ControlElementFlags elementFlags,
+int LightStyleV2::pixelMetric( PixelMetric metric, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags,
 			     const TQWidget *widget ) const
 {
     int ret;
@@ -1520,7 +1520,7 @@ int LightStyleV2::pixelMetric( PixelMetric metric, TQStyleControlElementData ceD
 }
 
 TQSize LightStyleV2::sizeFromContents( ContentsType contents,
-				    TQStyleControlElementData ceData,
+				    const TQStyleControlElementData &ceData,
 				    ControlElementFlags elementFlags,
 				    const TQSize &contentsSize,
 				    const TQStyleOption &data,
@@ -1626,7 +1626,7 @@ TQSize LightStyleV2::sizeFromContents( ContentsType contents,
 }
 
 int LightStyleV2::styleHint( TQ_StyleHint stylehint,
-			   TQStyleControlElementData ceData,
+			   const TQStyleControlElementData &ceData,
 			   ControlElementFlags elementFlags,
 			   const TQStyleOption &option,
 			   TQStyleHintReturn* returnData,
@@ -1669,7 +1669,7 @@ int LightStyleV2::styleHint( TQ_StyleHint stylehint,
 }
 
 TQPixmap LightStyleV2::stylePixmap( StylePixmap stylepixmap,
-				   TQStyleControlElementData ceData,
+				   const TQStyleControlElementData &ceData,
 				   ControlElementFlags elementFlags,
 				   const TQStyleOption &data,
 				   const TQWidget *widget ) const
diff --git a/kstyles/light/lightstyle-v2.h b/kstyles/light/lightstyle-v2.h
index d4b805eb0..3141ad978 100644
--- a/kstyles/light/lightstyle-v2.h
+++ b/kstyles/light/lightstyle-v2.h
@@ -42,42 +42,42 @@ public:
     LightStyleV2();
     virtual ~LightStyleV2();
 
-    void polishPopupMenu( TQStyleControlElementData ceData, ControlElementFlags elementFlags, void *ptr );
+    void polishPopupMenu( const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, void *ptr );
 
-    void drawPrimitive(TQ_PrimitiveElement, TQPainter *, TQStyleControlElementData ceData, ControlElementFlags elementFlags, const TQRect &, const TQColorGroup &,
+    void drawPrimitive(TQ_PrimitiveElement, TQPainter *, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, const TQRect &, const TQColorGroup &,
 		       SFlags = Style_Default,
 		       const TQStyleOption & = TQStyleOption::Default ) const;
 
-    void drawControl(TQ_ControlElement, TQPainter *, TQStyleControlElementData ceData, ControlElementFlags elementFlags, const TQRect &,
+    void drawControl(TQ_ControlElement, TQPainter *, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, const TQRect &,
 		     const TQColorGroup &, SFlags = Style_Default,
 		     const TQStyleOption & = TQStyleOption::Default, const TQWidget * = 0 ) const;
-    void drawControlMask(TQ_ControlElement, TQPainter *, TQStyleControlElementData ceData, ControlElementFlags elementFlags, const TQRect &,
+    void drawControlMask(TQ_ControlElement, TQPainter *, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, const TQRect &,
 			 const TQStyleOption & = TQStyleOption::Default, const TQWidget * = 0) const;
 
-    TQRect subRect(SubRect, const TQStyleControlElementData ceData, const ControlElementFlags elementFlags, const TQWidget *) const;
+    TQRect subRect(SubRect, const TQStyleControlElementData &ceData, const ControlElementFlags elementFlags, const TQWidget *) const;
 
-    void drawComplexControl(TQ_ComplexControl, TQPainter *, TQStyleControlElementData ceData, ControlElementFlags elementFlags, const TQRect &,
+    void drawComplexControl(TQ_ComplexControl, TQPainter *, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, const TQRect &,
 			    const TQColorGroup &, SFlags = Style_Default,
 			    SCFlags = SC_All, SCFlags = SC_None,
 			    const TQStyleOption & = TQStyleOption::Default, const TQWidget * = 0 ) const;
 
-    TQRect querySubControlMetrics(TQ_ComplexControl, TQStyleControlElementData ceData, ControlElementFlags elementFlags, SubControl,
+    TQRect querySubControlMetrics(TQ_ComplexControl, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, SubControl,
 				 const TQStyleOption & = TQStyleOption::Default, const TQWidget * = 0 ) const;
 
-    SubControl querySubControl(TQ_ComplexControl, TQStyleControlElementData ceData, ControlElementFlags elementFlags, const TQPoint &,
+    SubControl querySubControl(TQ_ComplexControl, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, const TQPoint &,
 			       const TQStyleOption &data = TQStyleOption::Default, const TQWidget * = 0 ) const;
 
-    int pixelMetric(PixelMetric, TQStyleControlElementData ceData, ControlElementFlags elementFlags, const TQWidget * = 0 ) const;
+    int pixelMetric(PixelMetric, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, const TQWidget * = 0 ) const;
 
-    TQSize sizeFromContents(ContentsType, TQStyleControlElementData ceData, ControlElementFlags elementFlags, const TQSize &,
+    TQSize sizeFromContents(ContentsType, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, const TQSize &,
 			   const TQStyleOption & = TQStyleOption::Default, const TQWidget * = 0 ) const;
 
-    int styleHint(TQ_StyleHint, TQStyleControlElementData ceData, ControlElementFlags elementFlags,
+    int styleHint(TQ_StyleHint, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags,
 		  const TQStyleOption & = TQStyleOption::Default,
 		  TQStyleHintReturn * = 0, const TQWidget * = 0 ) const;
 
     TQPixmap stylePixmap( StylePixmap stylepixmap,
-			 TQStyleControlElementData ceData,
+			 const TQStyleControlElementData &ceData,
 			 ControlElementFlags elementFlags,
 			 const TQStyleOption& = TQStyleOption::Default,
 			 const TQWidget* widget = 0 ) const;
diff --git a/kstyles/light/lightstyle-v3.cpp b/kstyles/light/lightstyle-v3.cpp
index bf39f451a..bf0163029 100644
--- a/kstyles/light/lightstyle-v3.cpp
+++ b/kstyles/light/lightstyle-v3.cpp
@@ -59,7 +59,7 @@ LightStyleV3::~LightStyleV3()
     delete basestyle;
 }
 
-void LightStyleV3::polishPopupMenu( TQStyleControlElementData ceData, ControlElementFlags elementFlags, void *ptr )
+void LightStyleV3::polishPopupMenu( const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, void *ptr )
 {
     KStyle::polishPopupMenu(ceData, elementFlags, ptr);
     // empty to satisy pure virtual requirements
@@ -214,7 +214,7 @@ static void drawLightBevel( TQPainter *p,
 
 void LightStyleV3::drawPrimitive( TQ_PrimitiveElement pe,
 				TQPainter *p,
-				TQStyleControlElementData ceData,
+				const TQStyleControlElementData &ceData,
 				ControlElementFlags elementFlags,
 				const TQRect &r,
 				const TQColorGroup &cg,
@@ -832,7 +832,7 @@ void LightStyleV3::drawPrimitive( TQ_PrimitiveElement pe,
 
 void LightStyleV3::drawControl( TQ_ControlElement control,
 			      TQPainter *p,
-			      TQStyleControlElementData ceData,
+			      const TQStyleControlElementData &ceData,
 			      ControlElementFlags elementFlags,
 			      const TQRect &r,
 			      const TQColorGroup &cg,
@@ -1116,7 +1116,7 @@ void LightStyleV3::drawControl( TQ_ControlElement control,
 
 void LightStyleV3::drawControlMask( TQ_ControlElement control,
 				  TQPainter *p,
-				  TQStyleControlElementData ceData,
+				  const TQStyleControlElementData &ceData,
 				  ControlElementFlags elementFlags,
 				  const TQRect &r,
 				  const TQStyleOption &data,
@@ -1133,7 +1133,7 @@ void LightStyleV3::drawControlMask( TQ_ControlElement control,
     }
 }
 
-TQRect LightStyleV3::subRect(SubRect subrect, const TQStyleControlElementData ceData, const ControlElementFlags elementFlags, const TQWidget *widget) const
+TQRect LightStyleV3::subRect(SubRect subrect, const TQStyleControlElementData &ceData, const ControlElementFlags elementFlags, const TQWidget *widget) const
 {
     TQRect rect;
 
@@ -1180,7 +1180,7 @@ TQRect LightStyleV3::subRect(SubRect subrect, const TQStyleControlElementData ce
 
 void LightStyleV3::drawComplexControl( TQ_ComplexControl control,
 				     TQPainter* p,
-				     TQStyleControlElementData ceData,
+				     const TQStyleControlElementData &ceData,
 				     ControlElementFlags elementFlags,
 				     const TQRect& r,
 				     const TQColorGroup& cg,
@@ -1456,7 +1456,7 @@ void LightStyleV3::drawComplexControl( TQ_ComplexControl control,
 }
 
 TQRect LightStyleV3::querySubControlMetrics( TQ_ComplexControl control,
-					  TQStyleControlElementData ceData,
+					  const TQStyleControlElementData &ceData,
 					  ControlElementFlags elementFlags,
 					  SubControl sc,
 					  const TQStyleOption &data,
@@ -1607,7 +1607,7 @@ TQRect LightStyleV3::querySubControlMetrics( TQ_ComplexControl control,
 }
 
 TQStyle::SubControl LightStyleV3::querySubControl( TQ_ComplexControl control,
-						TQStyleControlElementData ceData,
+						const TQStyleControlElementData &ceData,
 						ControlElementFlags elementFlags,
 						const TQPoint &pos,
 						const TQStyleOption &data,
@@ -1625,7 +1625,7 @@ TQStyle::SubControl LightStyleV3::querySubControl( TQ_ComplexControl control,
     return ret;
 }
 
-int LightStyleV3::pixelMetric( PixelMetric metric, TQStyleControlElementData ceData, ControlElementFlags elementFlags,
+int LightStyleV3::pixelMetric( PixelMetric metric, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags,
 			     const TQWidget *widget ) const
 {
     int ret;
@@ -1736,7 +1736,7 @@ int LightStyleV3::pixelMetric( PixelMetric metric, TQStyleControlElementData ceD
 }
 
 TQSize LightStyleV3::sizeFromContents( ContentsType contents,
-				    TQStyleControlElementData ceData,
+				    const TQStyleControlElementData &ceData,
 				    ControlElementFlags elementFlags,
 				    const TQSize &contentsSize,
 				    const TQStyleOption &data,
@@ -1855,7 +1855,7 @@ TQSize LightStyleV3::sizeFromContents( ContentsType contents,
 }
 
 int LightStyleV3::styleHint( TQ_StyleHint stylehint,
-			   TQStyleControlElementData ceData,
+			   const TQStyleControlElementData &ceData,
 			   ControlElementFlags elementFlags,
 			   const TQStyleOption &option,
 			   TQStyleHintReturn* returnData,
@@ -1902,7 +1902,7 @@ int LightStyleV3::styleHint( TQ_StyleHint stylehint,
 }
 
 TQPixmap LightStyleV3::stylePixmap( StylePixmap stylepixmap,
-				   TQStyleControlElementData ceData,
+				   const TQStyleControlElementData &ceData,
 				   ControlElementFlags elementFlags,
 				   const TQStyleOption &data,
 				   const TQWidget *widget ) const
diff --git a/kstyles/light/lightstyle-v3.h b/kstyles/light/lightstyle-v3.h
index 02059350c..ccda6cada 100644
--- a/kstyles/light/lightstyle-v3.h
+++ b/kstyles/light/lightstyle-v3.h
@@ -46,43 +46,43 @@ public:
     LightStyleV3();
     virtual ~LightStyleV3();
 
-    void polishPopupMenu( TQStyleControlElementData ceData, ControlElementFlags elementFlags, void *ptr );
+    void polishPopupMenu( const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, void *ptr );
 
-    void drawPrimitive(TQ_PrimitiveElement, TQPainter *, TQStyleControlElementData ceData, ControlElementFlags elementFlags, const TQRect &, const TQColorGroup &,
+    void drawPrimitive(TQ_PrimitiveElement, TQPainter *, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, const TQRect &, const TQColorGroup &,
 		       SFlags = Style_Default,
 		       const TQStyleOption & = TQStyleOption::Default ) const;
 
-    void drawControl(TQ_ControlElement, TQPainter *, TQStyleControlElementData ceData, ControlElementFlags elementFlags, const TQRect &,
+    void drawControl(TQ_ControlElement, TQPainter *, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, const TQRect &,
 		     const TQColorGroup &, SFlags = Style_Default,
 		     const TQStyleOption & = TQStyleOption::Default, const TQWidget * = 0 ) const;
-    void drawControlMask(TQ_ControlElement, TQPainter *, TQStyleControlElementData ceData, ControlElementFlags elementFlags, const TQRect &,
+    void drawControlMask(TQ_ControlElement, TQPainter *, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, const TQRect &,
 			 const TQStyleOption & = TQStyleOption::Default, const TQWidget * = 0) const;
 
-    TQRect subRect(SubRect, const TQStyleControlElementData ceData, const ControlElementFlags elementFlags, const TQWidget *) const;
+    TQRect subRect(SubRect, const TQStyleControlElementData &ceData, const ControlElementFlags elementFlags, const TQWidget *) const;
 
-    void drawComplexControl(TQ_ComplexControl, TQPainter *, TQStyleControlElementData ceData, ControlElementFlags elementFlags, const TQRect &,
+    void drawComplexControl(TQ_ComplexControl, TQPainter *, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, const TQRect &,
 			    const TQColorGroup &, SFlags = Style_Default,
 			    SCFlags = SC_All, SCFlags = SC_None,
 			    const TQStyleOption & = TQStyleOption::Default, const TQWidget * = 0 ) const;
 
-    TQRect querySubControlMetrics(TQ_ComplexControl, TQStyleControlElementData ceData, ControlElementFlags elementFlags, SubControl,
+    TQRect querySubControlMetrics(TQ_ComplexControl, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, SubControl,
 				 const TQStyleOption & = TQStyleOption::Default, const TQWidget * = 0 ) const;
 
-    SubControl querySubControl(TQ_ComplexControl, TQStyleControlElementData ceData, ControlElementFlags elementFlags, const TQPoint &,
+    SubControl querySubControl(TQ_ComplexControl, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, const TQPoint &,
 			       const TQStyleOption &data = TQStyleOption::Default, const TQWidget * = 0 ) const;
 
-    int pixelMetric(PixelMetric, TQStyleControlElementData ceData, ControlElementFlags elementFlags, const TQWidget * = 0 ) const;
+    int pixelMetric(PixelMetric, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, const TQWidget * = 0 ) const;
 
-    TQSize sizeFromContents(ContentsType, TQStyleControlElementData ceData, ControlElementFlags elementFlags, const TQSize &,
+    TQSize sizeFromContents(ContentsType, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, const TQSize &,
 			   const TQStyleOption & = TQStyleOption::Default, const TQWidget * = 0 ) const;
 
-    int styleHint(TQ_StyleHint, TQStyleControlElementData ceData, ControlElementFlags elementFlags,
+    int styleHint(TQ_StyleHint, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags,
 		  const TQStyleOption & = TQStyleOption::Default,
 		  TQStyleHintReturn * = 0,
 		  const TQWidget * = 0 ) const;
 
     TQPixmap stylePixmap( StylePixmap stylepixmap,
-			 TQStyleControlElementData ceData,
+			 const TQStyleControlElementData &ceData,
 			 ControlElementFlags elementFlags,
 			 const TQStyleOption& = TQStyleOption::Default,
 			 const TQWidget* widget = 0 ) const;
diff --git a/kstyles/plastik/plastik.cpp b/kstyles/plastik/plastik.cpp
index 9910db013..6828b8870 100644
--- a/kstyles/plastik/plastik.cpp
+++ b/kstyles/plastik/plastik.cpp
@@ -223,7 +223,7 @@ PlastikStyle::~PlastikStyle()
     delete verticalLine;
 }
 
-void PlastikStyle::applicationPolish(TQStyleControlElementData ceData, ControlElementFlags, void *ptr)
+void PlastikStyle::applicationPolish(const TQStyleControlElementData &ceData, ControlElementFlags, void *ptr)
 {
     if (ceData.widgetObjectTypes.contains(TQAPPLICATION_OBJECT_NAME_STRING)) {
 	TQApplication *app = reinterpret_cast<TQApplication*>(ptr);
@@ -235,7 +235,7 @@ void PlastikStyle::applicationPolish(TQStyleControlElementData ceData, ControlEl
     }
 }
 
-void PlastikStyle::polish(TQStyleControlElementData ceData, ControlElementFlags elementFlags, void *ptr)
+void PlastikStyle::polish(const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, void *ptr)
 {
     if (ceData.widgetObjectTypes.contains(TQWIDGET_OBJECT_NAME_STRING)) {
 	TQWidget *widget = reinterpret_cast<TQWidget*>(ptr);
@@ -278,7 +278,7 @@ void PlastikStyle::polish(TQStyleControlElementData ceData, ControlElementFlags
     KStyle::polish(ceData, elementFlags, ptr);
 }
 
-void PlastikStyle::unPolish(TQStyleControlElementData ceData, ControlElementFlags elementFlags, void *ptr)
+void PlastikStyle::unPolish(const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, void *ptr)
 {
     if (ceData.widgetObjectTypes.contains(TQWIDGET_OBJECT_NAME_STRING)) {
 	TQWidget *widget = reinterpret_cast<TQWidget*>(ptr);
@@ -1200,7 +1200,7 @@ void PlastikStyle::renderTab(TQPainter *p,
 
 void PlastikStyle::drawKStylePrimitive(KStylePrimitive kpe,
                                       TQPainter *p,
-                                      TQStyleControlElementData ceData,
+                                      const TQStyleControlElementData &ceData,
                                       ControlElementFlags elementFlags,
                                       const TQRect &r,
                                       const TQColorGroup &cg,
@@ -1453,7 +1453,7 @@ void PlastikStyle::drawKStylePrimitive(KStylePrimitive kpe,
 
 void PlastikStyle::drawPrimitive(TQ_PrimitiveElement pe,
                                 TQPainter *p,
-                                TQStyleControlElementData ceData,
+                                const TQStyleControlElementData &ceData,
                                 ControlElementFlags elementFlags,
                                 const TQRect &r,
                                 const TQColorGroup &cg,
@@ -2183,7 +2183,7 @@ void PlastikStyle::drawPrimitive(TQ_PrimitiveElement pe,
 
 void PlastikStyle::drawControl(TQ_ControlElement element,
                               TQPainter *p,
-                              TQStyleControlElementData ceData,
+                              const TQStyleControlElementData &ceData,
                               ControlElementFlags elementFlags,
                               const TQRect &r,
                               const TQColorGroup &cg,
@@ -2740,7 +2740,7 @@ void PlastikStyle::drawControl(TQ_ControlElement element,
 
 void PlastikStyle::drawControlMask(TQ_ControlElement element,
                                   TQPainter *p,
-                                  TQStyleControlElementData ceData,
+                                  const TQStyleControlElementData &ceData,
                                   ControlElementFlags elementFlags,
                                   const TQRect &r,
                                   const TQStyleOption &opt,
@@ -2762,7 +2762,7 @@ void PlastikStyle::drawControlMask(TQ_ControlElement element,
 
 void PlastikStyle::drawComplexControlMask(TQ_ComplexControl c,
                                          TQPainter *p,
-                                         const TQStyleControlElementData ceData,
+                                         const TQStyleControlElementData &ceData,
                                          const ControlElementFlags elementFlags,
                                          const TQRect &r,
                                          const TQStyleOption &o,
@@ -2785,7 +2785,7 @@ void PlastikStyle::drawComplexControlMask(TQ_ComplexControl c,
 
 void PlastikStyle::drawComplexControl(TQ_ComplexControl control,
                                      TQPainter *p,
-                                     TQStyleControlElementData ceData,
+                                     const TQStyleControlElementData &ceData,
                                      ControlElementFlags elementFlags,
                                      const TQRect &r,
                                      const TQColorGroup &cg,
@@ -3180,7 +3180,7 @@ void PlastikStyle::drawComplexControl(TQ_ComplexControl control,
 }
 
 
-TQRect PlastikStyle::subRect(SubRect r, const TQStyleControlElementData ceData, const ControlElementFlags elementFlags, const TQWidget *widget) const
+TQRect PlastikStyle::subRect(SubRect r, const TQStyleControlElementData &ceData, const ControlElementFlags elementFlags, const TQWidget *widget) const
 {
     switch (r) {
         case SR_ComboBoxFocusRect: {
@@ -3205,7 +3205,7 @@ TQRect PlastikStyle::subRect(SubRect r, const TQStyleControlElementData ceData,
 }
 
 TQRect PlastikStyle::querySubControlMetrics(TQ_ComplexControl control,
-                                          TQStyleControlElementData ceData,
+                                          const TQStyleControlElementData &ceData,
                                           ControlElementFlags elementFlags,
                                           SubControl subcontrol,
                                           const TQStyleOption &opt,
@@ -3275,7 +3275,7 @@ TQRect PlastikStyle::querySubControlMetrics(TQ_ComplexControl control,
     }
 }
 
-int PlastikStyle::pixelMetric(PixelMetric m, TQStyleControlElementData ceData, ControlElementFlags elementFlags, const TQWidget *widget) const
+int PlastikStyle::pixelMetric(PixelMetric m, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, const TQWidget *widget) const
 {
     switch(m) {
     // TABS
@@ -3383,7 +3383,7 @@ int PlastikStyle::pixelMetric(PixelMetric m, TQStyleControlElementData ceData, C
 
 
 TQSize PlastikStyle::sizeFromContents(ContentsType t,
-                                    TQStyleControlElementData ceData,
+                                    const TQStyleControlElementData &ceData,
                                     ControlElementFlags elementFlags,
                                     const TQSize &s,
                                     const TQStyleOption &opt,
@@ -3471,7 +3471,7 @@ TQSize PlastikStyle::sizeFromContents(ContentsType t,
 }
 
 int PlastikStyle::styleHint( TQ_StyleHint stylehint,
-                                   TQStyleControlElementData ceData,
+                                   const TQStyleControlElementData &ceData,
                                    ControlElementFlags elementFlags,
                                    const TQStyleOption &option,
                                    TQStyleHintReturn* returnData,
@@ -3497,7 +3497,7 @@ int PlastikStyle::styleHint( TQ_StyleHint stylehint,
     }
 }
 
-bool PlastikStyle::objectEventHandler( TQStyleControlElementData ceData, ControlElementFlags elementFlags, void* source, TQEvent *ev )
+bool PlastikStyle::objectEventHandler( const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, void* source, TQEvent *ev )
 {
     if (KStyle::objectEventHandler(ceData, elementFlags, source, ev) )
         return true;
diff --git a/kstyles/plastik/plastik.h b/kstyles/plastik/plastik.h
index fb8c0a2de..708666a7f 100644
--- a/kstyles/plastik/plastik.h
+++ b/kstyles/plastik/plastik.h
@@ -62,13 +62,13 @@ public:
     PlastikStyle();
     virtual ~PlastikStyle();
 
-    void applicationPolish(TQStyleControlElementData ceData, ControlElementFlags elementFlags, void *);
-    void polish(TQStyleControlElementData ceData, ControlElementFlags elementFlags, void *);
-    void unPolish(TQStyleControlElementData ceData, ControlElementFlags elementFlags, void *);
+    void applicationPolish(const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, void *);
+    void polish(const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, void *);
+    void unPolish(const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, void *);
 
     void drawKStylePrimitive(KStylePrimitive kpe,
                              TQPainter* p,
-                             TQStyleControlElementData ceData,
+                             const TQStyleControlElementData &ceData,
                              ControlElementFlags elementFlags,
                              const TQRect &r,
                              const TQColorGroup &cg,
@@ -78,7 +78,7 @@ public:
 
     void drawPrimitive(TQ_PrimitiveElement pe,
                        TQPainter *p,
-                       TQStyleControlElementData ceData,
+                       const TQStyleControlElementData &ceData,
                        ControlElementFlags elementFlags,
                        const TQRect &r,
                        const TQColorGroup &cg,
@@ -87,7 +87,7 @@ public:
 
     void drawControl(TQ_ControlElement element,
                      TQPainter *p,
-                     TQStyleControlElementData ceData,
+                     const TQStyleControlElementData &ceData,
                      ControlElementFlags elementFlags,
                      const TQRect &r,
                      const TQColorGroup &cg,
@@ -95,11 +95,11 @@ public:
                      const TQStyleOption& = TQStyleOption::Default,
                      const TQWidget *widget = 0 ) const;
 
-    void drawControlMask( TQ_ControlElement, TQPainter *, TQStyleControlElementData ceData, ControlElementFlags elementFlags, const TQRect &, const TQStyleOption &, const TQWidget * = 0) const;
+    void drawControlMask( TQ_ControlElement, TQPainter *, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, const TQRect &, const TQStyleOption &, const TQWidget * = 0) const;
 
     void drawComplexControl(TQ_ComplexControl control,
                             TQPainter *p,
-                            TQStyleControlElementData ceData,
+                            const TQStyleControlElementData &ceData,
                             ControlElementFlags elementFlags,
                             const TQRect &r,
                             const TQColorGroup &cg,
@@ -109,14 +109,14 @@ public:
                             const TQStyleOption& = TQStyleOption::Default,
                             const TQWidget *widget = 0 ) const;
 
-    int pixelMetric(PixelMetric m, TQStyleControlElementData ceData, ControlElementFlags elementFlags,
+    int pixelMetric(PixelMetric m, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags,
                     const TQWidget *widget = 0 ) const;
 
-    TQRect subRect(SubRect r, const TQStyleControlElementData ceData, const ControlElementFlags elementFlags,
+    TQRect subRect(SubRect r, const TQStyleControlElementData &ceData, const ControlElementFlags elementFlags,
                   const TQWidget *widget ) const;
 
     TQRect querySubControlMetrics(TQ_ComplexControl control,
-                                 TQStyleControlElementData ceData,
+                                 const TQStyleControlElementData &ceData,
                                  ControlElementFlags elementFlags,
                                  SubControl subcontrol,
                                  const TQStyleOption &opt = TQStyleOption::Default,
@@ -124,20 +124,20 @@ public:
 
     void drawComplexControlMask(TQStyle::TQ_ComplexControl c,
                                 TQPainter *p,
-                                const TQStyleControlElementData ceData,
+                                const TQStyleControlElementData &ceData,
                                 const ControlElementFlags elementFlags,
                                 const TQRect &r,
                                 const TQStyleOption &o=TQStyleOption::Default,
                                 const TQWidget *w = 0) const;
 
     TQSize sizeFromContents(TQStyle::ContentsType t,
-                           TQStyleControlElementData ceData,
+                           const TQStyleControlElementData &ceData,
                            ControlElementFlags elementFlags,
                            const TQSize &s,
                            const TQStyleOption &o,
                            const TQWidget *w = 0) const;
 
-    int styleHint(TQ_StyleHint, TQStyleControlElementData ceData, ControlElementFlags elementFlags,
+    int styleHint(TQ_StyleHint, const TQStyleControlElementData &ceData, ControlElementFlags elementFlags,
                   const TQStyleOption & = TQStyleOption::Default,
                   TQStyleHintReturn * = 0, const TQWidget * = 0 ) const;
 
@@ -266,7 +266,7 @@ protected:
     virtual void renderMenuBlendPixmap( KPixmap& pix, const TQColorGroup& cg, 
                                         const TQPopupMenu* popup ) const;
 
-    virtual bool objectEventHandler( TQStyleControlElementData ceData, ControlElementFlags elementFlags, void* source, TQEvent *e );
+    virtual bool objectEventHandler( const TQStyleControlElementData &ceData, ControlElementFlags elementFlags, void* source, TQEvent *e );
 
 protected slots:
     void khtmlWidgetDestroyed(TQObject* w);