source: trunk/doc/html/splitter-example.html

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[190]1<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
2<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/examples/splitter/splitter.doc:4 -->
3<html>
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5<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
6<title>Splitter</title>
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31</td>
32<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>Splitter</h1>
33
34
35<p>
36This example shows how to use splitters. With their help users can
37decide for themselves how much space each child item should get.
38<p> <hr>
39<p> Implementation:
40<p> <pre>/****************************************************************************
41** $Id: splitter-example.html 2051 2007-02-21 10:04:20Z chehrlic $
42**
43** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
44**
45** This file is part of an example program for Qt. This example
46** program may be used, distributed and modified without limitation.
47**
48*****************************************************************************/
49
50#include &lt;<a href="qapplication-h.html">qapplication.h</a>&gt;
51#include &lt;<a href="qlabel-h.html">qlabel.h</a>&gt;
52#include &lt;<a href="qsplitter-h.html">qsplitter.h</a>&gt;
53#include &lt;<a href="qmultilineedit-h.html">qmultilineedit.h</a>&gt;
54
55#include &lt;<a href="qpainter-h.html">qpainter.h</a>&gt;
56
57
58class Test : public <a href="qwidget.html">QWidget</a> {
59public:
60 Test(QWidget* parent=0, const char* name=0, int f=0);
61 void paintEvent(QPaintEvent* e);
62private:
63};
64
65
66
67<a name="f404"></a>Test::Test(QWidget* parent, const char* name, int f) :
68 <a href="qwidget.html">QWidget</a>(parent, name, f)
69{
70
71}
72
73<a name="x1302"></a>void Test::<a href="qwidget.html#paintEvent">paintEvent</a>(QPaintEvent* e)
74{
75 <a href="qpainter.html">QPainter</a> p(this);
76<a name="x1298"></a> p.<a href="qpainter.html#setClipRect">setClipRect</a>(e-&gt;rect());
77 const int d = 1000; //large number
78 int x1 = 0;
79 int x2 = <a href="qwidget.html#width">width</a>()-1;
80 int y1 = 0;
81 int y2 = <a href="qwidget.html#height">height</a>()-1;
82
83 int x = (x1+x2)/2;
84<a name="x1297"></a> p.<a href="qpainter.html#drawLine">drawLine</a>( x, y1, x+d, y1+d );
85 p.<a href="qpainter.html#drawLine">drawLine</a>( x, y1, x-d, y1+d );
86 p.<a href="qpainter.html#drawLine">drawLine</a>( x, y2, x+d, y2-d );
87 p.<a href="qpainter.html#drawLine">drawLine</a>( x, y2, x-d, y2-d );
88
89 int y = (y1+y2)/2;
90 p.<a href="qpainter.html#drawLine">drawLine</a>( x1, y, x1+d, y+d );
91 p.<a href="qpainter.html#drawLine">drawLine</a>( x1, y, x1+d, y-d );
92 p.<a href="qpainter.html#drawLine">drawLine</a>( x2, y, x2-d, y+d );
93 p.<a href="qpainter.html#drawLine">drawLine</a>( x2, y, x2-d, y-d );
94}
95
96
97int main( int argc, char ** argv )
98{
99 <a href="qapplication.html">QApplication</a> a( argc, argv );
100
101 <a href="qsplitter.html">QSplitter</a> *s1 = new <a href="qsplitter.html">QSplitter</a>( QSplitter::Vertical, 0 , "main" );
102
103 <a href="qsplitter.html">QSplitter</a> *s2 = new <a href="qsplitter.html">QSplitter</a>( QSplitter::Horizontal, s1, "top" );
104
105 Test *t1 = new Test( s2, "topLeft" );
106<a name="x1303"></a> t1-&gt;<a href="qwidget.html#setBackgroundColor">setBackgroundColor</a>( Qt::blue.light( 180 ) );
107<a name="x1306"></a> t1-&gt;<a href="qwidget.html#setMinimumSize">setMinimumSize</a>( 50, 0 );
108
109 Test *t2 = new Test( s2, "topRight" );
110 t2-&gt;<a href="qwidget.html#setBackgroundColor">setBackgroundColor</a>( Qt::green.light( 180 ) );
111<a name="x1301"></a> s2-&gt;<a href="qsplitter.html#setResizeMode">setResizeMode</a>( t2, QSplitter::KeepSize );
112<a name="x1299"></a> s2-&gt;<a href="qsplitter.html#moveToFirst">moveToFirst</a>( t2 );
113
114 <a href="qsplitter.html">QSplitter</a> *s3 = new <a href="qsplitter.html">QSplitter</a>( QSplitter::Horizontal, s1, "bottom" );
115
116 Test *t3 = new Test( s3, "bottomLeft" );
117 t3-&gt;<a href="qwidget.html#setBackgroundColor">setBackgroundColor</a>( Qt::red );
118 Test *t4 = new Test( s3, "bottomMiddle" );
119 t4-&gt;<a href="qwidget.html#setBackgroundColor">setBackgroundColor</a>( Qt::white );
120
121 Test *t5 = new Test( s3, "bottomRight" );
122<a name="x1305"></a> t5-&gt;<a href="qwidget.html#setMaximumHeight">setMaximumHeight</a>( 250 );
123 t5-&gt;<a href="qwidget.html#setMinimumSize">setMinimumSize</a>( 80, 50 );
124 t5-&gt;<a href="qwidget.html#setBackgroundColor">setBackgroundColor</a>( Qt::yellow );
125
126#ifdef Q_WS_QWS
127 // Qt/Embedded XOR drawing not yet implemented.
128<a name="x1300"></a> s1-&gt;<a href="qsplitter.html#setOpaqueResize">setOpaqueResize</a>( TRUE );
129#endif
130 s2-&gt;<a href="qsplitter.html#setOpaqueResize">setOpaqueResize</a>( TRUE );
131 s3-&gt;<a href="qsplitter.html#setOpaqueResize">setOpaqueResize</a>( TRUE );
132
133 a.<a href="qapplication.html#setMainWidget">setMainWidget</a>( s1 );
134 s1-&gt;<a href="qwidget.html#setCaption">setCaption</a>("Qt Example - Splitters");
135 s1-&gt;<a href="qwidget.html#show">show</a>();
136 int result = a.<a href="qapplication.html#exec">exec</a>();
137 delete s1;
138 return result;
139}
140</pre>
141
142<p>See also <a href="examples.html">Examples</a>.
143
144<!-- eof -->
145<p><address><hr><div align=center>
146<table width=100% cellspacing=0 border=0><tr>
147<td>Copyright &copy; 2007
148<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
149<td align=right><div align=right>Qt 3.3.8</div>
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