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| author | Timothy Pearson <kb9vqf@pearsoncomputing.net> | 2011-07-10 15:24:15 -0500 |
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| committer | Timothy Pearson <kb9vqf@pearsoncomputing.net> | 2011-07-10 15:24:15 -0500 |
| commit | bd0f3345a938b35ce6a12f6150373b0955b8dd12 (patch) | |
| tree | 7a520322212d48ebcb9fbe1087e7fca28b76185c /doc/html/qpaintevent.html | |
| download | qt3-bd0f3345a938b35ce6a12f6150373b0955b8dd12.tar.gz qt3-bd0f3345a938b35ce6a12f6150373b0955b8dd12.zip | |
Add Qt3 development HEAD version
Diffstat (limited to 'doc/html/qpaintevent.html')
| -rw-r--r-- | doc/html/qpaintevent.html | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/doc/html/qpaintevent.html b/doc/html/qpaintevent.html new file mode 100644 index 0000000..cb065ba --- /dev/null +++ b/doc/html/qpaintevent.html @@ -0,0 +1,119 @@ +<!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/kernel/qevent.cpp:1251 --> +<html> +<head> +<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> +<title>QPaintEvent 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>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 class=fn><a href="#QPaintEvent"><b>QPaintEvent</b></a> ( const QRegion & paintRegion, bool erased = TRUE )</li> +<li class=fn><a href="#QPaintEvent-2"><b>QPaintEvent</b></a> ( const QRect & paintRect, bool erased = TRUE )</li> +<li class=fn><a href="#QPaintEvent-3"><b>QPaintEvent</b></a> ( const QRegion & paintRegion, const QRect & paintRect, bool erased = TRUE )</li> +<li class=fn>const QRect & <a href="#rect"><b>rect</b></a> () const</li> +<li class=fn>const QRegion & <a href="#region"><b>region</b></a> () const</li> +<li class=fn>bool <a href="#erased"><b>erased</b></a> () const</li> +</ul> +<hr><a name="details"></a><h2>Detailed Description</h2> + + +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 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 also given by <em>paintRect</em>. If <em>erased</em> is +TRUE the region will be cleared before repainting. + +<h3 class=fn><a name="QPaintEvent-3"></a>QPaintEvent::QPaintEvent ( const <a href="qregion.html">QRegion</a> & paintRegion, const <a href="qrect.html">QRect</a> & paintRect, bool erased = TRUE ) +</h3> + +<p> Constructs a paint event object with the rectangle <em>paintRect</em> +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>bool <a name="erased"></a>QPaintEvent::erased () const +</h3> + +<p> Returns TRUE if the paint event region (or rectangle) has been +erased with the widget's background; otherwise returns FALSE. + +<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#x1892">life/life.cpp</a>, <a href="qfd-example.html#x2001">qfd/fontdisplayer.cpp</a>, <a href="showimg-example.html#x1340">showimg/showimg.cpp</a>, <a href="tutorial1-10.html#x2357">t10/cannon.cpp</a>, <a href="tutorial1-11.html#x2369">t11/cannon.cpp</a>, <a href="tutorial1-13.html#x2405">t13/cannon.cpp</a>, and <a href="tooltip-example.html#x446">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#x2002">qfd/fontdisplayer.cpp</a> and <a href="scribble-example.html#x920">scribble/scribble.cpp</a>. +<!-- eof --> +<hr><p> +This file is part of the <a href="index.html">Qt toolkit</a>. +Copyright © 1995-2007 +<a href="http://www.trolltech.com/">Trolltech</a>. 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