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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>QPaintEvent Class Reference</h1>
<p>The QPaintEvent class contains event parameters for paint events.
<a href="#details">More...</a>
<p><tt>#include <<a href="qevent-h.html">qevent.h</a>></tt>
<p>Inherits <a href="qevent.html">QEvent</a>.
<p><a href="qpaintevent-members.html">List of all member functions.</a>
<h2>Public Members</h2>
<ul>
<li><div class=fn><a href="#QPaintEvent"><b>QPaintEvent</b></a> ( const QRegion & paintRegion, bool erased = TRUE )</div></li>
<li><div class=fn><a href="#QPaintEvent-2"><b>QPaintEvent</b></a> ( const QRect & paintRect, bool erased = TRUE )</div></li>
<li><div class=fn>const QRect & <a href="#rect"><b>rect</b></a> () const</div></li>
<li><div class=fn>const QRegion & <a href="#region"><b>region</b></a> () const</div></li>
<li><div class=fn>bool <a href="#erased"><b>erased</b></a> () const</div></li>
</ul>
<hr><a name="details"></a><h2>Detailed Description</h2>
The QPaintEvent class contains event parameters for paint events.
<p> Paint events are sent to widgets that need to update themselves, for
instance when part of a widget is exposed because an overlying widget is
moved.
<p> The event contains a <a href="#region">region</a>() that needs to be updated, and a <a href="#rect">rect</a>()
that is the bounding rectangle of that region. Both are provided because
many widgets can't make much use of region(), and rect() can be much
faster than region().boundingRect(). Painting is clipped to region()
during processing of a paint event.
<p> The <a href="#erased">erased</a>() function returns TRUE if the region() has been cleared
to the widget's background (see <a href="qwidget.html#backgroundMode">QWidget::backgroundMode</a>()), and
FALSE if the region's contents are arbitrary.
<p> <p>See also <a href="qpainter.html">QPainter</a>, <a href="qwidget.html#update">QWidget::update</a>(), <a href="qwidget.html#repaint">QWidget::repaint</a>(), <a href="qwidget.html#paintEvent">QWidget::paintEvent</a>(), <a href="qwidget.html#backgroundMode-prop">QWidget::backgroundMode</a>, <a href="qregion.html">QRegion</a> and <a href="events.html">Event Classes</a>.
<hr><h2>Member Function Documentation</h2>
<h3 class=fn><a name="QPaintEvent"></a>QPaintEvent::QPaintEvent ( const <a href="qregion.html">QRegion</a> & paintRegion, bool erased = TRUE )
</h3>
<p> Constructs a paint event object with the region that should be updated.
The region is given by <em>paintRegion</em>. If <em>erased</em> is TRUE the
region will be cleared before repainting.
<h3 class=fn><a name="QPaintEvent-2"></a>QPaintEvent::QPaintEvent ( const <a href="qrect.html">QRect</a> & paintRect, bool erased = TRUE )
</h3>
<p> Constructs a paint event object with the rectangle that should be updated.
The region is given by <em>paintRect</em>. If <em>erased</em> is TRUE the
region will be cleared before repainting.
<h3 class=fn>bool <a name="erased"></a>QPaintEvent::erased () const
</h3>
<p> Returns whether the paint event region (or rectangle) has been
erased with the widget's background.
<h3 class=fn>const <a href="qrect.html">QRect</a> & <a name="rect"></a>QPaintEvent::rect () const
</h3>
<p> Returns the rectangle that should be updated.
<p> <p>See also <a href="#region">region</a>() and <a href="qpainter.html#setClipRect">QPainter::setClipRect</a>().
<p>Examples: <a href="life-example.html#x1312">life/life.cpp</a>, <a href="qfd-example.html#x746">qfd/fontdisplayer.cpp</a>, <a href="showimg-example.html#x440">showimg/showimg.cpp</a>, <a href="t10.html#x2170">t10/cannon.cpp</a>, <a href="t11.html#x2182">t11/cannon.cpp</a>, <a href="t13.html#x2218">t13/cannon.cpp</a> and <a href="tooltip-example.html#x159">tooltip/tooltip.cpp</a>.
<h3 class=fn>const <a href="qregion.html">QRegion</a> & <a name="region"></a>QPaintEvent::region () const
</h3>
<p> Returns the region that should be updated.
<p> <p>See also <a href="#rect">rect</a>() and <a href="qpainter.html#setClipRegion">QPainter::setClipRegion</a>().
<p>Examples: <a href="qfd-example.html#x747">qfd/fontdisplayer.cpp</a> and <a href="scribble-example.html#x535">scribble/scribble.cpp</a>.
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