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authorTimothy Pearson <kb9vqf@pearsoncomputing.net>2012-01-26 23:32:43 -0600
committerTimothy Pearson <kb9vqf@pearsoncomputing.net>2012-01-26 23:32:43 -0600
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+<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/src/kernel/qcursor.cpp:47 -->
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+<title>TQCursor Class</title>
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+ <a href="index.html">
+<font color="#004faf">Home</font></a>
+ | <a href="classes.html">
+<font color="#004faf">All&nbsp;Classes</font></a>
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+<font color="#004faf">Functions</font></a>
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+<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>TQCursor Class Reference</h1>
+
+<p>The TQCursor class provides a mouse cursor with an arbitrary
+shape.
+<a href="#details">More...</a>
+<p><tt>#include &lt;<a href="qcursor-h.html">ntqcursor.h</a>&gt;</tt>
+<p>Inherits <a href="ntqt.html">TQt</a>.
+<p><a href="qcursor-members.html">List of all member functions.</a>
+<h2>Public Members</h2>
+<ul>
+<li class=fn><a href="#TQCursor"><b>TQCursor</b></a> ()</li>
+<li class=fn><a href="#TQCursor-2"><b>TQCursor</b></a> ( int&nbsp;shape )</li>
+<li class=fn><a href="#TQCursor-3"><b>TQCursor</b></a> ( const&nbsp;TQBitmap&nbsp;&amp;&nbsp;bitmap, const&nbsp;TQBitmap&nbsp;&amp;&nbsp;mask, int&nbsp;hotX = -1, int&nbsp;hotY = -1 )</li>
+<li class=fn><a href="#TQCursor-4"><b>TQCursor</b></a> ( const&nbsp;TQPixmap&nbsp;&amp;&nbsp;pixmap, int&nbsp;hotX = -1, int&nbsp;hotY = -1 )</li>
+<li class=fn><a href="#TQCursor-5"><b>TQCursor</b></a> ( const&nbsp;TQCursor&nbsp;&amp;&nbsp;c )</li>
+<li class=fn><a href="#~TQCursor"><b>~TQCursor</b></a> ()</li>
+<li class=fn>TQCursor &amp; <a href="#operator-eq"><b>operator=</b></a> ( const&nbsp;TQCursor&nbsp;&amp;&nbsp;c )</li>
+<li class=fn>int <a href="#shape"><b>shape</b></a> () const</li>
+<li class=fn>void <a href="#setShape"><b>setShape</b></a> ( int&nbsp;shape )</li>
+<li class=fn>const TQBitmap * <a href="#bitmap"><b>bitmap</b></a> () const</li>
+<li class=fn>const TQBitmap * <a href="#mask"><b>mask</b></a> () const</li>
+<li class=fn>TQPoint <a href="#hotSpot"><b>hotSpot</b></a> () const</li>
+<li class=fn>HCURSOR <b>handle</b> () const</li>
+<li class=fn><a href="#TQCursor-6"><b>TQCursor</b></a> ( HCURSOR&nbsp;handle )</li>
+<li class=fn>HANDLE <a href="#handle"><b>handle</b></a> () const</li>
+</ul>
+<h2>Static Public Members</h2>
+<ul>
+<li class=fn>TQPoint <a href="#pos"><b>pos</b></a> ()</li>
+<li class=fn>void <a href="#setPos"><b>setPos</b></a> ( int&nbsp;x, int&nbsp;y )</li>
+<li class=fn>void <a href="#setPos-2"><b>setPos</b></a> ( const TQPoint &amp; )</li>
+<li class=fn>void <a href="#initialize"><b>initialize</b></a> ()</li>
+<li class=fn>void <a href="#cleanup"><b>cleanup</b></a> ()</li>
+</ul>
+<h2>Related Functions</h2>
+<ul>
+<li class=fn>TQDataStream &amp; <a href="#operator-lt-lt"><b>operator&lt;&lt;</b></a> ( TQDataStream&nbsp;&amp;&nbsp;s, const&nbsp;TQCursor&nbsp;&amp;&nbsp;c )</li>
+<li class=fn>TQDataStream &amp; <a href="#operator-gt-gt"><b>operator&gt;&gt;</b></a> ( TQDataStream&nbsp;&amp;&nbsp;s, TQCursor&nbsp;&amp;&nbsp;c )</li>
+</ul>
+<hr><a name="details"></a><h2>Detailed Description</h2>
+
+
+<p> The TQCursor class provides a mouse cursor with an arbitrary
+shape.
+<p>
+
+<p> This class is mainly used to create mouse cursors that are
+associated with particular widgets and to get and set the position
+of the mouse cursor.
+<p> TQt has a number of standard cursor shapes, but you can also make
+custom cursor shapes based on a <a href="ntqbitmap.html">TQBitmap</a>, a mask and a hotspot.
+<p> To associate a cursor with a widget, use <a href="ntqwidget.html#setCursor">TQWidget::setCursor</a>(). To
+associate a cursor with all widgets (normally for a short period
+of time), use <a href="ntqapplication.html#setOverrideCursor">TQApplication::setOverrideCursor</a>().
+<p> To set a cursor shape use <a href="#setShape">TQCursor::setShape</a>() or use the TQCursor
+constructor which takes the shape as argument, or you can use one
+of the predefined cursors defined in the <a href="ntqt.html#CursorShape-enum">CursorShape</a> enum.
+<p> If you want to create a cursor with your own bitmap, either use
+the TQCursor constructor which takes a bitmap and a mask or the
+constructor which takes a pixmap as arguments.
+<p> To set or get the position of the mouse cursor use the static
+methods <a href="#pos">TQCursor::pos</a>() and <a href="#setPos">TQCursor::setPos</a>().
+<p> <center><img src="cursors.png" alt="Cursor Shapes"></center>
+<p> <p>See also <a href="ntqwidget.html">TQWidget</a>, <a href="guibooks.html#fowler">GUI Design Handbook:
+ Cursors</a>, <a href="appearance.html">Widget Appearance and Style</a>, and <a href="shared.html">Implicitly and Explicitly Shared Classes</a>.
+
+<p> On X11, TQt supports the <a href="http://www.xfree86.org/4.3.0/Xcursor.3.html">Xcursor</a>
+library, which allows for full color icon themes. The table below
+shows the cursor name used for each TQt::CursorShape value. If a
+cursor cannot be found using the name shown below, a standard X11
+cursor will be used instead. Note: X11 does not provide
+appropriate cursors for all possible TQt::CursorShape values. It
+is possible that some cursors will be taken from the Xcursor
+theme, while others will use an internal bitmap cursor.
+<p> <center><table cellpadding="4" cellspacing="2" border="0">
+<tr bgcolor="#a2c511"> <th valign="top">TQt::CursorShape Values <th valign="top">Cursor Names
+<tr bgcolor="#f0f0f0"> <td valign="top">TQt::ArrowCursor <td valign="top">left_ptr
+<tr bgcolor="#d0d0d0"> <td valign="top">TQt::UpArrowCursor <td valign="top">up_arrow
+<tr bgcolor="#f0f0f0"> <td valign="top">TQt::CrossCursor <td valign="top">cross
+<tr bgcolor="#d0d0d0"> <td valign="top">TQt::WaitCursor <td valign="top">wait
+<tr bgcolor="#f0f0f0"> <td valign="top">TQt::BusyCursor <td valign="top">left_ptr_watch
+<tr bgcolor="#d0d0d0"> <td valign="top">TQt::IbeamCursor <td valign="top">ibeam
+<tr bgcolor="#f0f0f0"> <td valign="top">TQt::SizeVerCursor <td valign="top">size_ver
+<tr bgcolor="#d0d0d0"> <td valign="top">TQt::SizeHorCursor <td valign="top">size_hor
+<tr bgcolor="#f0f0f0"> <td valign="top">TQt::SizeBDiagCursor <td valign="top">size_bdiag
+<tr bgcolor="#d0d0d0"> <td valign="top">TQt::SizeFDiagCursor <td valign="top">size_fdiag
+<tr bgcolor="#f0f0f0"> <td valign="top">TQt::SizeAllCursor <td valign="top">size_all
+<tr bgcolor="#d0d0d0"> <td valign="top">TQt::SplitVCursor <td valign="top">split_v
+<tr bgcolor="#f0f0f0"> <td valign="top">TQt::SplitHCursor <td valign="top">split_h
+<tr bgcolor="#d0d0d0"> <td valign="top">TQt::PointingHandCursor <td valign="top">pointing_hand
+<tr bgcolor="#f0f0f0"> <td valign="top">TQt::ForbiddenCursor <td valign="top">forbidden
+<tr bgcolor="#d0d0d0"> <td valign="top">TQt::WhatsThisCursor <td valign="top">whats_this
+</table></center>
+
+<hr><h2>Member Function Documentation</h2>
+<h3 class=fn><a name="TQCursor"></a>TQCursor::TQCursor ()
+</h3>
+Constructs a cursor with the default arrow shape.
+
+<h3 class=fn><a name="TQCursor-2"></a>TQCursor::TQCursor ( int&nbsp;shape )
+</h3>
+Constructs a cursor with the specified <em>shape</em>.
+<p> See <a href="ntqt.html#CursorShape-enum">CursorShape</a> for a list of shapes.
+<p> <p>See also <a href="#setShape">setShape</a>().
+
+<h3 class=fn><a name="TQCursor-3"></a>TQCursor::TQCursor ( const&nbsp;<a href="ntqbitmap.html">TQBitmap</a>&nbsp;&amp;&nbsp;bitmap, const&nbsp;<a href="ntqbitmap.html">TQBitmap</a>&nbsp;&amp;&nbsp;mask, int&nbsp;hotX = -1, int&nbsp;hotY = -1 )
+</h3>
+Constructs a custom bitmap cursor.
+<p> <em>bitmap</em> and
+<em>mask</em> make up the bitmap.
+<em>hotX</em> and
+<em>hotY</em> define the cursor's hot spot.
+<p> If <em>hotX</em> is negative, it is set to the <tt>bitmap().width()/2</tt>.
+If <em>hotY</em> is negative, it is set to the <tt>bitmap().height()/2</tt>.
+<p> The cursor <em>bitmap</em> (B) and <em>mask</em> (M) bits are combined like this:
+<ul>
+<li> B=1 and M=1 gives black.
+<li> B=0 and M=1 gives white.
+<li> B=0 and M=0 gives transparent.
+<li> B=1 and M=0 gives an undefined result.
+</ul>
+<p> Use the global TQt color <tt>color0</tt> to draw 0-pixels and <tt>color1</tt> to
+draw 1-pixels in the bitmaps.
+<p> Valid cursor sizes depend on the display hardware (or the
+underlying window system). We recommend using 32x32 cursors,
+because this size is supported on all platforms. Some platforms
+also support 16x16, 48x48 and 64x64 cursors.
+<p> <p>See also <a href="ntqbitmap.html#TQBitmap">TQBitmap::TQBitmap</a>() and <a href="ntqpixmap.html#setMask">TQBitmap::setMask</a>().
+
+<h3 class=fn><a name="TQCursor-4"></a>TQCursor::TQCursor ( const&nbsp;<a href="ntqpixmap.html">TQPixmap</a>&nbsp;&amp;&nbsp;pixmap, int&nbsp;hotX = -1, int&nbsp;hotY = -1 )
+</h3>
+Constructs a custom pixmap cursor.
+<p> <em>pixmap</em> is the image. It is usual to give it a mask (set using
+<a href="ntqpixmap.html#setMask">TQPixmap::setMask</a>()). <em>hotX</em> and <em>hotY</em> define the cursor's hot
+spot.
+<p> If <em>hotX</em> is negative, it is set to the <tt>pixmap().width()/2</tt>.
+If <em>hotY</em> is negative, it is set to the <tt>pixmap().height()/2</tt>.
+<p> Valid cursor sizes depend on the display hardware (or the
+underlying window system). We recommend using 32x32 cursors,
+because this size is supported on all platforms. Some platforms
+also support 16x16, 48x48 and 64x64 cursors.
+<p> Currently, only black-and-white pixmaps can be used.
+<p> <p>See also <a href="ntqpixmap.html#TQPixmap">TQPixmap::TQPixmap</a>() and <a href="ntqpixmap.html#setMask">TQPixmap::setMask</a>().
+
+<h3 class=fn><a name="TQCursor-5"></a>TQCursor::TQCursor ( const&nbsp;<a href="ntqcursor.html">TQCursor</a>&nbsp;&amp;&nbsp;c )
+</h3>
+Constructs a copy of the cursor <em>c</em>.
+
+<h3 class=fn><a name="TQCursor-6"></a>TQCursor::TQCursor ( HCURSOR&nbsp;handle )
+</h3>
+
+<p> Creates a cursor with the specified window system handle <em>handle</em>.
+<p> <b>Warning:</b>
+Portable in principle, but if you use it you are probably about to
+do something non-portable. Be careful.
+
+<h3 class=fn><a name="~TQCursor"></a>TQCursor::~TQCursor ()
+</h3>
+Destroys the cursor.
+
+<h3 class=fn>const&nbsp;<a href="ntqbitmap.html">TQBitmap</a>&nbsp;* <a name="bitmap"></a>TQCursor::bitmap () const
+</h3>
+Returns the cursor bitmap, or 0 if it is one of the standard
+cursors.
+
+<h3 class=fn>void <a name="cleanup"></a>TQCursor::cleanup ()<tt> [static]</tt>
+</h3>
+Internal function that deinitializes the predefined cursors.
+This function is called from the <a href="ntqapplication.html">TQApplication</a> destructor.
+<p> <p>See also <a href="#initialize">initialize</a>().
+
+<h3 class=fn>HANDLE <a name="handle"></a>TQCursor::handle () const
+</h3>
+Returns the window system cursor handle.
+<p> <b>Warning:</b>
+Portable in principle, but if you use it you are probably about to
+do something non-portable. Be careful.
+
+<h3 class=fn><a href="ntqpoint.html">TQPoint</a> <a name="hotSpot"></a>TQCursor::hotSpot () const
+</h3>
+Returns the cursor hot spot, or (0, 0) if it is one of the
+standard cursors.
+
+<h3 class=fn>void <a name="initialize"></a>TQCursor::initialize ()<tt> [static]</tt>
+</h3>
+Internal function that initializes the predefined cursors.
+This function is called from the <a href="ntqapplication.html">TQApplication</a> constructor.
+<p> <p>See also <a href="#cleanup">cleanup</a>().
+
+<h3 class=fn>const&nbsp;<a href="ntqbitmap.html">TQBitmap</a>&nbsp;* <a name="mask"></a>TQCursor::mask () const
+</h3>
+Returns the cursor bitmap mask, or 0 if it is one of the standard
+cursors.
+
+<h3 class=fn><a href="ntqcursor.html">TQCursor</a>&nbsp;&amp; <a name="operator-eq"></a>TQCursor::operator= ( const&nbsp;<a href="ntqcursor.html">TQCursor</a>&nbsp;&amp;&nbsp;c )
+</h3>
+Assigns <em>c</em> to this cursor and returns a reference to this
+cursor.
+
+<h3 class=fn><a href="ntqpoint.html">TQPoint</a> <a name="pos"></a>TQCursor::pos ()<tt> [static]</tt>
+</h3>
+Returns the position of the cursor (hot spot) in global screen
+coordinates.
+<p> You can call <a href="ntqwidget.html#mapFromGlobal">TQWidget::mapFromGlobal</a>() to translate it to widget
+coordinates.
+<p> <p>See also <a href="#setPos">setPos</a>(), <a href="ntqwidget.html#mapFromGlobal">TQWidget::mapFromGlobal</a>(), and <a href="ntqwidget.html#mapToGlobal">TQWidget::mapToGlobal</a>().
+
+<p>Examples: <a href="tutorial2-06.html#x2579">chart/canvasview.cpp</a>, <a href="fileiconview-example.html#x809">fileiconview/qfileiconview.cpp</a>, and <a href="menu-example.html#x1859">menu/menu.cpp</a>.
+<h3 class=fn>void <a name="setPos"></a>TQCursor::setPos ( int&nbsp;x, int&nbsp;y )<tt> [static]</tt>
+</h3>
+Moves the cursor (hot spot) to the global screen position (<em>x</em>,
+<em>y</em>).
+<p> You can call <a href="ntqwidget.html#mapToGlobal">TQWidget::mapToGlobal</a>() to translate widget
+coordinates to global screen coordinates.
+<p> <p>See also <a href="#pos">pos</a>(), <a href="ntqwidget.html#mapFromGlobal">TQWidget::mapFromGlobal</a>(), and <a href="ntqwidget.html#mapToGlobal">TQWidget::mapToGlobal</a>().
+
+<h3 class=fn>void <a name="setPos-2"></a>TQCursor::setPos ( const&nbsp;<a href="ntqpoint.html">TQPoint</a>&nbsp;&amp; )<tt> [static]</tt>
+</h3>
+This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
+<p>
+<h3 class=fn>void <a name="setShape"></a>TQCursor::setShape ( int&nbsp;shape )
+</h3>
+Sets the cursor to the shape identified by <em>shape</em>.
+<p> See <a href="ntqt.html#CursorShape-enum">CursorShape</a> for the list of cursor shapes.
+<p> <p>See also <a href="#shape">shape</a>().
+
+<h3 class=fn>int <a name="shape"></a>TQCursor::shape () const
+</h3>
+Returns the cursor shape identifier. The return value is one of
+the <a href="ntqt.html#CursorShape-enum">CursorShape</a> enum values (cast to an int).
+<p> <p>See also <a href="#setShape">setShape</a>().
+
+<hr><h2>Related Functions</h2>
+<h3 class=fn><a href="ntqdatastream.html">TQDataStream</a>&nbsp;&amp; <a name="operator-lt-lt"></a>operator&lt;&lt; ( <a href="ntqdatastream.html">TQDataStream</a>&nbsp;&amp;&nbsp;s, const&nbsp;<a href="ntqcursor.html">TQCursor</a>&nbsp;&amp;&nbsp;c )
+</h3>
+
+Writes the cursor <em>c</em> to the stream <em>s</em>.
+<p> <p>See also <a href="datastreamformat.html">Format of the TQDataStream operators</a>.
+
+<h3 class=fn><a href="ntqdatastream.html">TQDataStream</a>&nbsp;&amp; <a name="operator-gt-gt"></a>operator&gt;&gt; ( <a href="ntqdatastream.html">TQDataStream</a>&nbsp;&amp;&nbsp;s, <a href="ntqcursor.html">TQCursor</a>&nbsp;&amp;&nbsp;c )
+</h3>
+
+Reads a cursor from the stream <em>s</em> and sets <em>c</em> to the read data.
+<p> <p>See also <a href="datastreamformat.html">Format of the TQDataStream operators</a>.
+
+<!-- eof -->
+<hr><p>
+This file is part of the <a href="index.html">TQt toolkit</a>.
+Copyright &copy; 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 &copy; 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>