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<h1 class="title">Qt 3 Support Members for QApplication</h1>
<p><b>The following class members are part of the <a href="qt3support.html">Qt 3 support layer</a>.</b> They are provided to help you port old code to Qt 4. We advise against using them in new code.</p>
<p><ul><li><a href="qapplication.html">QApplication class reference</a></li></ul></p>
<h2>Public Types</h2>
<table class="alignedsummary">
<tr><td class="memItemLeft topAlign rightAlign"> typedef </td><td class="memItemRight bottomAlign"><b><a href="qapplication-qt3.html#ColorMode-typedef">ColorMode</a></b></td></tr>
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<h2>Static Public Members</h2>
<table class="alignedsummary">
<tr><td class="memItemLeft topAlign rightAlign"> const int </td><td class="memItemRight bottomAlign"><b><a href="qapplication-qt3.html#CustomColors-var">CustomColors</a></b></td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> const int </td><td class="memItemRight bottomAlign"><b><a href="qapplication-qt3.html#NormalColors-var">NormalColors</a></b></td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> ColorMode </td><td class="memItemRight bottomAlign"><b><a href="qapplication-qt3.html#colorMode">colorMode</a></b> ()</td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qapplication-qt3.html#flushX">flushX</a></b> ()</td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="qapplication-qt3.html#hasGlobalMouseTracking">hasGlobalMouseTracking</a></b> ()</td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> Qt::Alignment </td><td class="memItemRight bottomAlign"><b><a href="qapplication-qt3.html#horizontalAlignment">horizontalAlignment</a></b> ( Qt::Alignment <i>align</i> )</td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> Qt::MacintoshVersion </td><td class="memItemRight bottomAlign"><b><a href="qapplication-qt3.html#macVersion">macVersion</a></b> ()</td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> QWidget * </td><td class="memItemRight bottomAlign"><b><a href="qapplication-qt3.html#mainWidget">mainWidget</a></b> ()</td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="qapplication-qt3.html#reverseLayout">reverseLayout</a></b> ()</td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qapplication-qt3.html#setColorMode">setColorMode</a></b> ( ColorMode <i>mode</i> )</td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qapplication-qt3.html#setFont-2">setFont</a></b> ( const QFont &amp; <i>font</i>, bool <i>b</i>, const char * <i>className</i> = 0 )</td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qapplication-qt3.html#setGlobalMouseTracking">setGlobalMouseTracking</a></b> ( bool <i>dummy</i> )</td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qapplication-qt3.html#setMainWidget">setMainWidget</a></b> ( QWidget * <i>mainWidget</i> )</td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qapplication-qt3.html#setOverrideCursor-2">setOverrideCursor</a></b> ( const QCursor &amp; <i>cursor</i>, bool <i>replace</i> )</td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qapplication-qt3.html#setPalette-2">setPalette</a></b> ( const QPalette &amp; <i>pal</i>, bool <i>b</i>, const char * <i>className</i> = 0 )</td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qapplication-qt3.html#setReverseLayout">setReverseLayout</a></b> ( bool <i>reverse</i> )</td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qapplication-qt3.html#setWinStyleHighlightColor">setWinStyleHighlightColor</a></b> ( const QColor &amp; <i>c</i> )</td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> QWidget * </td><td class="memItemRight bottomAlign"><b><a href="qapplication-qt3.html#widgetAt-2">widgetAt</a></b> ( int <i>x</i>, int <i>y</i>, bool <i>child</i> )</td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> QWidget * </td><td class="memItemRight bottomAlign"><b><a href="qapplication-qt3.html#widgetAt-3">widgetAt</a></b> ( const QPoint &amp; <i>point</i>, bool <i>child</i> )</td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> const QColor &amp; </td><td class="memItemRight bottomAlign"><b><a href="qapplication-qt3.html#winStyleHighlightColor">winStyleHighlightColor</a></b> ()</td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> Qt::WindowsVersion </td><td class="memItemRight bottomAlign"><b><a href="qapplication-qt3.html#winVersion">winVersion</a></b> ()</td></tr>
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<ul>
<li class="fn">6 static public members inherited from <a href="qcoreapplication.html#static-public-members">QCoreApplication</a></li>
</ul>
<h2>Member Type Documentation</h2>
<!-- $$$ColorMode -->
<h3 class="fn"><a name="ColorMode-typedef"></a>typedef QApplication::<span class="name">ColorMode</span></h3>
<p>Use <a href="qapplication.html#ColorSpec-enum">ColorSpec</a> instead.</p>
<!-- @@@ColorMode -->
<h2>Member Function Documentation</h2>
<!-- $$$colorMode[overload1]$$$colorMode -->
<h3 class="fn"><a name="colorMode"></a><span class="type"><a href="qapplication-qt3.html#ColorMode-typedef">ColorMode</a></span> QApplication::<span class="name">colorMode</span> ()<tt> [static]</tt></h3>
<p>Use <a href="qapplication.html#colorSpec">colorSpec</a>() instead, and use <a href="qapplication.html#ColorSpec-enum">ColorSpec</a> as the enum type.</p>
<p><b>See also </b><a href="qapplication-qt3.html#setColorMode">setColorMode</a>().</p>
<!-- @@@colorMode -->
<!-- $$$flushX[overload1]$$$flushX -->
<h3 class="fn"><a name="flushX"></a><span class="type">void</span> QApplication::<span class="name">flushX</span> ()<tt> [static]</tt></h3>
<p>Use <a href="qcoreapplication.html#flush">flush</a>() instead.</p>
<!-- @@@flushX -->
<!-- $$$hasGlobalMouseTracking[overload1]$$$hasGlobalMouseTracking -->
<h3 class="fn"><a name="hasGlobalMouseTracking"></a><span class="type">bool</span> QApplication::<span class="name">hasGlobalMouseTracking</span> ()<tt> [static]</tt></h3>
<p>This feature does not exist anymore. This function always returns true in Qt 4.</p>
<!-- @@@hasGlobalMouseTracking -->
<!-- $$$horizontalAlignment[overload1]$$$horizontalAlignmentQt::Alignment -->
<h3 class="fn"><a name="horizontalAlignment"></a><span class="type"><a href="qt.html#AlignmentFlag-enum">Qt::Alignment</a></span> QApplication::<span class="name">horizontalAlignment</span> ( <span class="type"><a href="qt.html#AlignmentFlag-enum">Qt::Alignment</a></span> <i>align</i> )<tt> [static]</tt></h3>
<p>Strips out vertical alignment flags and transforms an alignment <i>align</i> of <a href="qt.html#AlignmentFlag-enum">Qt::AlignLeft</a> into <a href="qt.html#AlignmentFlag-enum">Qt::AlignLeft</a> or <a href="qt.html#AlignmentFlag-enum">Qt::AlignRight</a> according to the language used.</p>
<!-- @@@horizontalAlignment -->
<!-- $$$macVersion[overload1]$$$macVersion -->
<h3 class="fn"><a name="macVersion"></a><span class="type"><a href="qt-qt3.html#MacintoshVersion-enum">Qt::MacintoshVersion</a></span> QApplication::<span class="name">macVersion</span> ()<tt> [static]</tt></h3>
<p>Use <a href="qsysinfo.html#MacintoshVersion-var">QSysInfo::MacintoshVersion</a> instead.</p>
<!-- @@@macVersion -->
<!-- $$$mainWidget[overload1]$$$mainWidget -->
<h3 class="fn"><a name="mainWidget"></a><span class="type"><a href="qwidget.html">QWidget</a></span> * QApplication::<span class="name">mainWidget</span> ()<tt> [static]</tt></h3>
<p>Returns the main application widget, or 0 if there is no main widget.</p>
<p><b>See also </b><a href="qapplication-qt3.html#setMainWidget">setMainWidget</a>().</p>
<!-- @@@mainWidget -->
<!-- $$$reverseLayout[overload1]$$$reverseLayout -->
<h3 class="fn"><a name="reverseLayout"></a><span class="type">bool</span> QApplication::<span class="name">reverseLayout</span> ()<tt> [static]</tt></h3>
<p>Use <a href="qapplication.html#layoutDirection-prop">layoutDirection</a>() instead.</p>
<p><b>See also </b><a href="qapplication-qt3.html#setReverseLayout">setReverseLayout</a>().</p>
<!-- @@@reverseLayout -->
<!-- $$$setColorMode[overload1]$$$setColorModeColorMode -->
<h3 class="fn"><a name="setColorMode"></a><span class="type">void</span> QApplication::<span class="name">setColorMode</span> ( <span class="type"><a href="qapplication-qt3.html#ColorMode-typedef">ColorMode</a></span> <i>mode</i> )<tt> [static]</tt></h3>
<p>Use <a href="qapplication.html#setColorSpec">setColorSpec</a>() instead, and pass a <a href="qapplication.html#ColorSpec-enum">ColorSpec</a> value instead.</p>
<p><b>See also </b><a href="qapplication-qt3.html#colorMode">colorMode</a>().</p>
<!-- @@@setColorMode -->
<!-- $$$setFont$$$setFontconstQFont&boolconstchar* -->
<h3 class="fn"><a name="setFont-2"></a><span class="type">void</span> QApplication::<span class="name">setFont</span> ( const <span class="type"><a href="qfont.html">QFont</a></span> &amp; <i>font</i>, <span class="type">bool</span> <i>b</i>, const <span class="type">char</span> * <i>className</i> = 0 )<tt> [static]</tt></h3>
<p>Use the two-argument overload instead.</p>
<!-- @@@setFont -->
<!-- $$$setGlobalMouseTracking[overload1]$$$setGlobalMouseTrackingbool -->
<h3 class="fn"><a name="setGlobalMouseTracking"></a><span class="type">void</span> QApplication::<span class="name">setGlobalMouseTracking</span> ( <span class="type">bool</span> <i>dummy</i> )<tt> [static]</tt></h3>
<p>This function does nothing in Qt 4. The <i>dummy</i> parameter is ignored.</p>
<p><b>See also </b><a href="qapplication-qt3.html#hasGlobalMouseTracking">hasGlobalMouseTracking</a>().</p>
<!-- @@@setGlobalMouseTracking -->
<!-- $$$setMainWidget[overload1]$$$setMainWidgetQWidget* -->
<h3 class="fn"><a name="setMainWidget"></a><span class="type">void</span> QApplication::<span class="name">setMainWidget</span> ( <span class="type"><a href="qwidget.html">QWidget</a></span> * <i>mainWidget</i> )<tt> [static]</tt></h3>
<p>Sets the application's main widget to <i>mainWidget</i>.</p>
<p>In most respects the main widget is like any other widget, except that if it is closed, the application exits. <a href="qapplication.html">QApplication</a> does <i>not</i> take ownership of the <i>mainWidget</i>, so if you create your main widget on the heap you must delete it yourself.</p>
<p>You need not have a main widget; connecting <a href="qapplication.html#lastWindowClosed">lastWindowClosed</a>() to <a href="qcoreapplication.html#quit">quit</a>() is an alternative.</p>
<p>On X11, this function also resizes and moves the main widget according to the <i>-geometry</i> command-line option, so you should set the default geometry (using <a href="qwidget.html#geometry-prop">QWidget::setGeometry</a>()) before calling setMainWidget().</p>
<p><b>See also </b><a href="qapplication-qt3.html#mainWidget">mainWidget</a>(), <a href="qapplication.html#exec">exec</a>(), and <a href="qcoreapplication.html#quit">quit</a>().</p>
<!-- @@@setMainWidget -->
<!-- $$$setOverrideCursor$$$setOverrideCursorconstQCursor&bool -->
<h3 class="fn"><a name="setOverrideCursor-2"></a><span class="type">void</span> QApplication::<span class="name">setOverrideCursor</span> ( const <span class="type"><a href="qcursor.html">QCursor</a></span> &amp; <i>cursor</i>, <span class="type">bool</span> <i>replace</i> )<tt> [static]</tt></h3>
<p>Use changeOverrideCursor(<i>cursor</i>) (if <i>replace</i> is true) or setOverrideCursor(<i>cursor</i>) (if <i>replace</i> is false).</p>
<!-- @@@setOverrideCursor -->
<!-- $$$setPalette$$$setPaletteconstQPalette&boolconstchar* -->
<h3 class="fn"><a name="setPalette-2"></a><span class="type">void</span> QApplication::<span class="name">setPalette</span> ( const <span class="type"><a href="qpalette.html">QPalette</a></span> &amp; <i>pal</i>, <span class="type">bool</span> <i>b</i>, const <span class="type">char</span> * <i>className</i> = 0 )<tt> [static]</tt></h3>
<p>Use the two-argument overload instead.</p>
<!-- @@@setPalette -->
<!-- $$$setReverseLayout[overload1]$$$setReverseLayoutbool -->
<h3 class="fn"><a name="setReverseLayout"></a><span class="type">void</span> QApplication::<span class="name">setReverseLayout</span> ( <span class="type">bool</span> <i>reverse</i> )<tt> [static]</tt></h3>
<p>Use <a href="qapplication.html#layoutDirection-prop">setLayoutDirection</a>() instead.</p>
<p><b>See also </b><a href="qapplication-qt3.html#reverseLayout">reverseLayout</a>().</p>
<!-- @@@setReverseLayout -->
<!-- $$$setWinStyleHighlightColor[overload1]$$$setWinStyleHighlightColorconstQColor& -->
<h3 class="fn"><a name="setWinStyleHighlightColor"></a><span class="type">void</span> QApplication::<span class="name">setWinStyleHighlightColor</span> ( const <span class="type"><a href="qcolor.html">QColor</a></span> &amp; <i>c</i> )<tt> [static]</tt></h3>
<p>Use the palette instead.</p>
<p>For example, if you have code like</p>
<pre class="cpp"> app.setWinStyleHighlightColor(color);</pre>
<p>you can rewrite it as</p>
<pre class="cpp"> <span class="type"><a href="qpalette.html">QPalette</a></span> <a href="qapplication.html#palette">palette</a>(<span class="type"><a href="qapplication.html">QApplication</a></span><span class="operator">::</span>palette());
palette<span class="operator">.</span>setColor(<span class="type"><a href="qpalette.html">QPalette</a></span><span class="operator">::</span>Highlight<span class="operator">,</span> color);
<span class="type"><a href="qapplication.html">QApplication</a></span><span class="operator">::</span><a href="qapplication.html#setPalette">setPalette</a>(palette);</pre>
<p><b>See also </b><a href="qapplication-qt3.html#winStyleHighlightColor">winStyleHighlightColor</a>().</p>
<!-- @@@setWinStyleHighlightColor -->
<!-- $$$widgetAt$$$widgetAtintintbool -->
<h3 class="fn"><a name="widgetAt-2"></a><span class="type"><a href="qwidget.html">QWidget</a></span> * QApplication::<span class="name">widgetAt</span> ( <span class="type">int</span> <i>x</i>, <span class="type">int</span> <i>y</i>, <span class="type">bool</span> <i>child</i> )<tt> [static]</tt></h3>
<p>Use the two-argument <a href="qapplication.html#widgetAt">widgetAt</a>() overload to get the child widget. To get the top-level widget do this:</p>
<pre class="cpp"> <span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>widget <span class="operator">=</span> qApp<span class="operator">-</span><span class="operator">&gt;</span><a href="qapplication.html#widgetAt">widgetAt</a>(x<span class="operator">,</span> y);
<span class="keyword">if</span> (widget)
widget <span class="operator">=</span> widget<span class="operator">-</span><span class="operator">&gt;</span>window();</pre>
<!-- @@@widgetAt -->
<!-- $$$widgetAt$$$widgetAtconstQPoint&bool -->
<h3 class="fn"><a name="widgetAt-3"></a><span class="type"><a href="qwidget.html">QWidget</a></span> * QApplication::<span class="name">widgetAt</span> ( const <span class="type"><a href="qpoint.html">QPoint</a></span> &amp; <i>point</i>, <span class="type">bool</span> <i>child</i> )<tt> [static]</tt></h3>
<p>Use the single-argument <a href="qapplication.html#widgetAt">widgetAt</a>() overload to get the child widget. To get the top-level widget do this:</p>
<pre class="cpp"> <span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>widget <span class="operator">=</span> qApp<span class="operator">-</span><span class="operator">&gt;</span><a href="qapplication.html#widgetAt">widgetAt</a>(point);
<span class="keyword">if</span> (widget)
widget <span class="operator">=</span> widget<span class="operator">-</span><span class="operator">&gt;</span>window();</pre>
<!-- @@@widgetAt -->
<!-- $$$winStyleHighlightColor[overload1]$$$winStyleHighlightColor -->
<h3 class="fn"><a name="winStyleHighlightColor"></a>const <span class="type"><a href="qcolor.html">QColor</a></span> &amp; QApplication::<span class="name">winStyleHighlightColor</span> ()<tt> [static]</tt></h3>
<p>Use <a href="qapplication.html#palette">QApplication::palette</a>().color(<a href="qpalette.html#ColorGroup-enum">QPalette::Active</a>, <a href="qpalette.html#ColorRole-enum">QPalette::Highlight</a>) instead.</p>
<p><b>See also </b><a href="qapplication-qt3.html#setWinStyleHighlightColor">setWinStyleHighlightColor</a>().</p>
<!-- @@@winStyleHighlightColor -->
<!-- $$$winVersion[overload1]$$$winVersion -->
<h3 class="fn"><a name="winVersion"></a><span class="type"><a href="qt-qt3.html#WindowsVersion-enum">Qt::WindowsVersion</a></span> QApplication::<span class="name">winVersion</span> ()<tt> [static]</tt></h3>
<p>Use <a href="qsysinfo.html#WindowsVersion-var">QSysInfo::WindowsVersion</a> instead.</p>
<!-- @@@winVersion -->
<h2>Member Variable Documentation</h2>
<!-- $$$CustomColors -->
<h3 class="fn"><a name="CustomColors-var"></a>const <span class="type">int</span> QApplication::<span class="name">CustomColors</span></h3>
<p>Use <a href="qapplication.html#ColorSpec-enum">CustomColor</a> instead.</p>
<!-- @@@CustomColors -->
<!-- $$$NormalColors -->
<h3 class="fn"><a name="NormalColors-var"></a>const <span class="type">int</span> QApplication::<span class="name">NormalColors</span></h3>
<p>Use <a href="qapplication.html#ColorSpec-enum">NormalColor</a> instead.</p>
<!-- @@@NormalColors -->
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