<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/src/widgets/qwidgetstack.cpp:97 --> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> <title>TQWidgetStack Class</title> <style type="text/css"><!-- fn { margin-left: 1cm; text-indent: -1cm; } a:link { color: #004faf; text-decoration: none } a:visited { color: #672967; text-decoration: none } body { background: #ffffff; color: black; } --></style> </head> <body> <table border="0" cellpadding="0" cellspacing="0" width="100%"> <tr bgcolor="#E5E5E5"> <td valign=center> <a href="index.html"> <font color="#004faf">Home</font></a> | <a href="classes.html"> <font color="#004faf">All Classes</font></a> | <a href="mainclasses.html"> <font color="#004faf">Main Classes</font></a> | <a href="annotated.html"> <font color="#004faf">Annotated</font></a> | <a href="groups.html"> <font color="#004faf">Grouped Classes</font></a> | <a href="functions.html"> <font color="#004faf">Functions</font></a> </td> <td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>TQWidgetStack Class Reference</h1> <p>The TQWidgetStack class provides a stack of widgets of which only the top widget is user-visible. <a href="#details">More...</a> <p><tt>#include <<a href="qwidgetstack-h.html">qwidgetstack.h</a>></tt> <p>Inherits <a href="qframe.html">TQFrame</a>. <p><a href="qwidgetstack-members.html">List of all member functions.</a> <h2>Public Members</h2> <ul> <li class=fn><a href="#TQWidgetStack"><b>TQWidgetStack</b></a> ( TQWidget * parent = 0, const char * name = 0 )</li> <li class=fn><a href="#TQWidgetStack-2"><b>TQWidgetStack</b></a> ( TQWidget * parent, const char * name, WFlags f )</li> <li class=fn><a href="#~TQWidgetStack"><b>~TQWidgetStack</b></a> ()</li> <li class=fn>int <a href="#addWidget"><b>addWidget</b></a> ( TQWidget * w, int id = -1 )</li> <li class=fn>void <a href="#removeWidget"><b>removeWidget</b></a> ( TQWidget * w )</li> <li class=fn>TQWidget * <a href="#widget"><b>widget</b></a> ( int id ) const</li> <li class=fn>int <a href="#id"><b>id</b></a> ( TQWidget * widget ) const</li> <li class=fn>TQWidget * <a href="#visibleWidget"><b>visibleWidget</b></a> () const</li> </ul> <h2>Public Slots</h2> <ul> <li class=fn>void <a href="#raiseWidget"><b>raiseWidget</b></a> ( int id )</li> <li class=fn>void <a href="#raiseWidget-2"><b>raiseWidget</b></a> ( TQWidget * w )</li> </ul> <h2>Signals</h2> <ul> <li class=fn>void <a href="#aboutToShow"><b>aboutToShow</b></a> ( int )</li> <li class=fn>void <a href="#aboutToShow-2"><b>aboutToShow</b></a> ( TQWidget * )</li> </ul> <h2>Protected Members</h2> <ul> <li class=fn>virtual void <a href="#setChildGeometries"><b>setChildGeometries</b></a> ()</li> </ul> <hr><a name="details"></a><h2>Detailed Description</h2> The TQWidgetStack class provides a stack of widgets of which only the top widget is user-visible. <p> <p> The application programmer can move any widget to the top of the stack at any time using <a href="#raiseWidget">raiseWidget</a>(), and add or remove widgets using <a href="#addWidget">addWidget</a>() and <a href="#removeWidget">removeWidget</a>(). It is not sufficient to pass the widget stack as parent to a widget which should be inserted into the widgetstack. <p> <a href="#visibleWidget">visibleWidget</a>() is the <em>get</em> equivalent of raiseWidget(); it returns a pointer to the widget that is currently at the top of the stack. <p> TQWidgetStack also provides the ability to manipulate widgets through application-specified integer IDs. You can also translate from widget pointers to IDs using <a href="#id">id</a>() and from IDs to widget pointers using <a href="#widget">widget</a>(). These numeric IDs are unique (per TQWidgetStack, not globally), but TQWidgetStack does not attach any additional meaning to them. <p> The default widget stack is frameless, but you can use the usual <a href="qframe.html">TQFrame</a> functions (such as <a href="qframe.html#setFrameStyle">setFrameStyle</a>()) to add a frame. <p> TQWidgetStack provides a signal, <a href="#aboutToShow">aboutToShow</a>(), which is emitted just before a managed widget is shown. <p> <p>See also <a href="qtabdialog.html">TQTabDialog</a>, <a href="qtabbar.html">TQTabBar</a>, <a href="qframe.html">TQFrame</a>, and <a href="organizers.html">Organizers</a>. <hr><h2>Member Function Documentation</h2> <h3 class=fn><a name="TQWidgetStack"></a>TQWidgetStack::TQWidgetStack ( <a href="qwidget.html">TQWidget</a> * parent = 0, const char * name = 0 ) </h3> Constructs an empty widget stack. <p> The <em>parent</em> and <em>name</em> arguments are passed to the <a href="qframe.html">TQFrame</a> constructor. <h3 class=fn><a name="TQWidgetStack-2"></a>TQWidgetStack::TQWidgetStack ( <a href="qwidget.html">TQWidget</a> * parent, const char * name, WFlags f ) </h3> Constructs an empty widget stack. <p> The <em>parent</em>, <em>name</em> and <em>f</em> arguments are passed to the <a href="qframe.html">TQFrame</a> constructor. <h3 class=fn><a name="~TQWidgetStack"></a>TQWidgetStack::~TQWidgetStack () </h3> Destroys the object and frees any allocated resources. <h3 class=fn>void <a name="aboutToShow"></a>TQWidgetStack::aboutToShow ( int )<tt> [signal]</tt> </h3> <p> This signal is emitted just before a managed widget is shown if that managed widget has an ID != -1. The argument is the numeric ID of the widget. <p> If you call <a href="#visibleWidget">visibleWidget</a>() in a slot connected to <a href="#aboutToShow">aboutToShow</a>(), the widget it returns is the one that is currently visible, not the one that is about to be shown. <h3 class=fn>void <a name="aboutToShow-2"></a>TQWidgetStack::aboutToShow ( <a href="qwidget.html">TQWidget</a> * )<tt> [signal]</tt> </h3> <p> This is an overloaded member function, provided for convenience. It behaves essentially like the above function. <p> This signal is emitted just before a managed widget is shown. The argument is a pointer to the widget. <p> If you call <a href="#visibleWidget">visibleWidget</a>() in a slot connected to <a href="#aboutToShow">aboutToShow</a>(), the widget returned is the one that is currently visible, not the one that is about to be shown. <h3 class=fn>int <a name="addWidget"></a>TQWidgetStack::addWidget ( <a href="qwidget.html">TQWidget</a> * w, int id = -1 ) </h3> Adds widget <em>w</em> to this stack of widgets, with ID <em>id</em>. <p> If you pass an id >= 0 this ID is used. If you pass an <em>id</em> of -1 (the default), the widgets will be numbered automatically. If you pass -2 a unique negative integer will be generated. No widget has an ID of -1. Returns the ID or -1 on failure (e.g. <em>w</em> is 0). <p> If you pass an id that is already used, then a unique negative integer will be generated to prevent two widgets having the same id. <p> If <em>w</em> already exists in the stack the widget will be removed first. <p> If <em>w</em> is not a child of this TQWidgetStack moves it using <a href="qwidget.html#reparent">reparent</a>(). <p>Example: <a href="xform-example.html#x1276">xform/xform.cpp</a>. <h3 class=fn>int <a name="id"></a>TQWidgetStack::id ( <a href="qwidget.html">TQWidget</a> * widget ) const </h3> Returns the ID of the <em>widget</em>. Returns -1 if <em>widget</em> is 0 or is not being managed by this widget stack. <p> <p>See also <a href="#widget">widget</a>() and <a href="#addWidget">addWidget</a>(). <h3 class=fn>void <a name="raiseWidget"></a>TQWidgetStack::raiseWidget ( int id )<tt> [slot]</tt> </h3> Raises the widget with ID <em>id</em> to the top of the widget stack. <p> <p>See also <a href="#visibleWidget">visibleWidget</a>(). <p>Example: <a href="xform-example.html#x1277">xform/xform.cpp</a>. <h3 class=fn>void <a name="raiseWidget-2"></a>TQWidgetStack::raiseWidget ( <a href="qwidget.html">TQWidget</a> * w )<tt> [slot]</tt> </h3> This is an overloaded member function, provided for convenience. It behaves essentially like the above function. <p> Raises widget <em>w</em> to the top of the widget stack. <h3 class=fn>void <a name="removeWidget"></a>TQWidgetStack::removeWidget ( <a href="qwidget.html">TQWidget</a> * w ) </h3> Removes widget <em>w</em> from this stack of widgets. Does not delete <em>w</em>. If <em>w</em> is the currently visible widget, no other widget is substituted. <p> <p>See also <a href="#visibleWidget">visibleWidget</a>() and <a href="#raiseWidget">raiseWidget</a>(). <h3 class=fn>void <a name="setChildGeometries"></a>TQWidgetStack::setChildGeometries ()<tt> [virtual protected]</tt> </h3> Fixes up the children's geometries. <h3 class=fn><a href="qwidget.html">TQWidget</a> * <a name="visibleWidget"></a>TQWidgetStack::visibleWidget () const </h3> Returns the currently visible widget (the one at the top of the stack), or 0 if nothing is currently being shown. <p> <p>See also <a href="#aboutToShow">aboutToShow</a>(), <a href="#id">id</a>(), and <a href="#raiseWidget">raiseWidget</a>(). <h3 class=fn><a href="qwidget.html">TQWidget</a> * <a name="widget"></a>TQWidgetStack::widget ( int id ) const </h3> Returns the widget with ID <em>id</em>. Returns 0 if this widget stack does not manage a widget with ID <em>id</em>. <p> <p>See also <a href="#id">id</a>() and <a href="#addWidget">addWidget</a>(). <!-- eof --> <hr><p> This file is part of the <a href="index.html">TQt toolkit</a>. Copyright © 1995-2007 <a href="http://www.trolltech.com/">Trolltech</a>. All Rights Reserved.<p><address><hr><div align=center> <table width=100% cellspacing=0 border=0><tr> <td>Copyright © 2007 <a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a> <td align=right><div align=right>TQt 3.3.8</div> </table></div></address></body> </html>