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</style></head><body><table border="0" cellpadding="0" cellspacing="0" width="100%"><tr /><td align="left" valign="top" width="32"><img align="left" border="0" height="32" src="images/rb-logo.png" width="32" /></td><td width="1">  </td><td class="postheader" 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="modules.html"><font color="#004faf">Modules</font></a></td></table><h1 align="center">QPaintEvent Class Reference<br /><sup><sup>[<a href="qtgui.html">QtGui</a> module]</sup></sup></h1><p>The QPaintEvent class contains event parameters for paint
events. <a href="#details">More...</a></p>
<p>Inherits <a href="qevent.html">QEvent</a>.</p><h3>Methods</h3><ul><li><div class="fn" /><b><a href="qpaintevent.html#QPaintEvent">__init__</a></b> (<i>self</i>, QRegion <i>paintRegion</i>)</li><li><div class="fn" /><b><a href="qpaintevent.html#QPaintEvent-2">__init__</a></b> (<i>self</i>, QRect <i>paintRect</i>)</li><li><div class="fn" /><b><a href="qpaintevent.html#QPaintEvent-3">__init__</a></b> (<i>self</i>, QPaintEvent)</li><li><div class="fn" />QRect <b><a href="qpaintevent.html#rect">rect</a></b> (<i>self</i>)</li><li><div class="fn" />QRegion <b><a href="qpaintevent.html#region">region</a></b> (<i>self</i>)</li></ul><a name="details" /><hr /><h2>Detailed Description</h2><p>The QPaintEvent class contains event parameters for paint
events.</p>
<p>Paint events are sent to widgets that need to update themselves,
for instance when part of a widget is exposed because a covering
widget was moved.</p>
<p>The event contains a <a href="qpaintevent.html#region">region</a>() that needs to be updated,
and a <a href="qpaintevent.html#rect">rect</a>() that is the
bounding rectangle of that region. Both are provided because many
widgets can't make much use of <a href="qpaintevent.html#region">region</a>(), and <a href="qpaintevent.html#rect">rect</a>() can be much faster than <a href="qpaintevent.html#region">region</a>().boundingRect().</p>
<a id="automatic-clipping" name="automatic-clipping" />
<h3>Automatic Clipping</h3>
<p>Painting is clipped to <a href="qpaintevent.html#region">region</a>() during the processing of a
paint event. This clipping is performed by Qt's paint system and is
independent of any clipping that may be applied to a <a href="qpainter.html">QPainter</a> used to draw on the paint device.</p>
<p>As a result, the value returned by <a href="qpainter.html#clipRegion">QPainter.clipRegion</a>() on a
newly-constructed <a href="qpainter.html">QPainter</a> will not
reflect the clip region that is used by the paint system.</p>
<hr /><h2>Method Documentation</h2><h3 class="fn"><a name="QPaintEvent" />QPaintEvent.__init__ (<i>self</i>, <a href="qregion.html">QRegion</a> <i>paintRegion</i>)</h3><p>Constructs a paint event object with the region that needs to be
updated. The region is specified by <i>paintRegion</i>.</p>
<h3 class="fn"><a name="QPaintEvent-2" />QPaintEvent.__init__ (<i>self</i>, <a href="qrect.html">QRect</a> <i>paintRect</i>)</h3><p>Constructs a paint event object with the rectangle that needs to
be updated. The region is specified by <i>paintRect</i>.</p>
<h3 class="fn"><a name="QPaintEvent-3" />QPaintEvent.__init__ (<i>self</i>, <a href="qpaintevent.html">QPaintEvent</a>)</h3><h3 class="fn"><a name="rect" /><a href="qrect.html">QRect</a> QPaintEvent.rect (<i>self</i>)</h3><p>Returns the rectangle that needs to be updated.</p>
<p><b>See also</b> <a href="qpaintevent.html#region">region</a>()
and <a href="qpainter.html#setClipRect">QPainter.setClipRect</a>().</p>
<h3 class="fn"><a name="region" /><a href="qregion.html">QRegion</a> QPaintEvent.region (<i>self</i>)</h3><p>Returns the region that needs to be updated.</p>
<p><b>See also</b> <a href="qpaintevent.html#rect">rect</a>() and
<a href="qpainter.html#setClipRegion">QPainter.setClipRegion</a>().</p>
<address><hr /><div align="center"><table border="0" cellspacing="0" width="100%"><tr class="address"><td align="left" width="25%">PyQt 4.10.3 for X11</td><td align="center" width="50%">Copyright © <a href="http://www.riverbankcomputing.com">Riverbank Computing Ltd</a> and <a href="http://www.qtsoftware.com">Nokia</a> 2012</td><td align="right" width="25%">Qt 4.8.5</td></tr></table></div></address></body></html>
