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6<title>Buttons and Groupboxes</title>
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32<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>Buttons and Groupboxes</h1>
33
34
35<p>
36This example shows different types of groupboxes (buttongroups, etc.) and
37different kinds of buttons (checkboxes, radiobuttons, pushbuttons, etc.).
38<p> <hr>
39<p> Header file:
40<p> <pre>/****************************************************************************
41** $Id: buttongroups-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#ifndef BUTTONS_GROUPS_H
51#define BUTTONS_GROUPS_H
52
53#include &lt;<a href="qwidget-h.html">qwidget.h</a>&gt;
54
55class QCheckBox;
56class QRadioButton;
57
58class ButtonsGroups : public <a href="qwidget.html">QWidget</a>
59{
60 <a href="metaobjects.html#Q_OBJECT">Q_OBJECT</a>
61
62public:
63 ButtonsGroups( <a href="qwidget.html">QWidget</a> *parent = 0, const char *name = 0 );
64
65protected:
66 <a href="qcheckbox.html">QCheckBox</a> *state;
67 <a href="qradiobutton.html">QRadioButton</a> *rb21, *rb22, *rb23;
68
69protected slots:
70 void slotChangeGrp3State();
71
72};
73
74#endif
75</pre>
76
77<p> <hr>
78<p> Implementation:
79<p> <pre>/****************************************************************************
80** $Id: buttongroups-example.html 2051 2007-02-21 10:04:20Z chehrlic $
81**
82** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
83**
84** This file is part of an example program for Qt. This example
85** program may be used, distributed and modified without limitation.
86**
87*****************************************************************************/
88
89#include "buttongroups.h"
90
91#include &lt;<a href="qpopupmenu-h.html">qpopupmenu.h</a>&gt;
92#include &lt;<a href="qbuttongroup-h.html">qbuttongroup.h</a>&gt;
93#include &lt;<a href="qlayout-h.html">qlayout.h</a>&gt;
94#include &lt;<a href="qradiobutton-h.html">qradiobutton.h</a>&gt;
95#include &lt;<a href="qcheckbox-h.html">qcheckbox.h</a>&gt;
96#include &lt;<a href="qgroupbox-h.html">qgroupbox.h</a>&gt;
97#include &lt;<a href="qpushbutton-h.html">qpushbutton.h</a>&gt;
98
99/*
100 * Constructor
101 *
102 * Creates all child widgets of the ButtonGroups window
103 */
104
105<a name="f261"></a>ButtonsGroups::ButtonsGroups( <a href="qwidget.html">QWidget</a> *parent, const char *name )
106 : <a href="qwidget.html">QWidget</a>( parent, name )
107{
108 // Create Widgets which allow easy layouting
109 <a href="qvboxlayout.html">QVBoxLayout</a> *vbox = new <a href="qvboxlayout.html">QVBoxLayout</a>( this, 11, 6 );
110 <a href="qhboxlayout.html">QHBoxLayout</a> *box1 = new <a href="qhboxlayout.html">QHBoxLayout</a>( vbox );
111 <a href="qhboxlayout.html">QHBoxLayout</a> *box2 = new <a href="qhboxlayout.html">QHBoxLayout</a>( vbox );
112
113 // ------- first group
114
115 // Create an exclusive button group
116 <a href="qbuttongroup.html">QButtonGroup</a> *bgrp1 = new <a href="qbuttongroup.html">QButtonGroup</a>( 1, QGroupBox::Horizontal, "Button Group 1 (exclusive)", this);
117 box1-&gt;<a href="qboxlayout.html#addWidget">addWidget</a>( bgrp1 );
118<a name="x549"></a> bgrp1-&gt;<a href="qbuttongroup.html#setExclusive">setExclusive</a>( TRUE );
119
120 // insert 3 radiobuttons
121 <a href="qradiobutton.html">QRadioButton</a> *rb11 = new <a href="qradiobutton.html">QRadioButton</a>( "&amp;Radiobutton 1", bgrp1 );
122<a name="x559"></a> rb11-&gt;<a href="qradiobutton.html#setChecked">setChecked</a>( TRUE );
123 (void)new <a href="qradiobutton.html">QRadioButton</a>( "R&amp;adiobutton 2", bgrp1 );
124 (void)new <a href="qradiobutton.html">QRadioButton</a>( "Ra&amp;diobutton 3", bgrp1 );
125
126 // ------- second group
127
128 // Create a non-exclusive buttongroup
129 <a href="qbuttongroup.html">QButtonGroup</a> *bgrp2 = new <a href="qbuttongroup.html">QButtonGroup</a>( 1, QGroupBox::Horizontal, "Button Group 2 (non-exclusive)", this );
130 box1-&gt;<a href="qboxlayout.html#addWidget">addWidget</a>( bgrp2 );
131 bgrp2-&gt;<a href="qbuttongroup.html#setExclusive">setExclusive</a>( FALSE );
132
133 // insert 3 checkboxes
134 (void)new <a href="qcheckbox.html">QCheckBox</a>( "&amp;Checkbox 1", bgrp2 );
135 <a href="qcheckbox.html">QCheckBox</a> *cb12 = new <a href="qcheckbox.html">QCheckBox</a>( "C&amp;heckbox 2", bgrp2 );
136<a name="x552"></a> cb12-&gt;<a href="qcheckbox.html#setChecked">setChecked</a>( TRUE );
137 <a href="qcheckbox.html">QCheckBox</a> *cb13 = new <a href="qcheckbox.html">QCheckBox</a>( "Triple &amp;State Button", bgrp2 );
138<a name="x553"></a> cb13-&gt;<a href="qcheckbox.html#setTristate">setTristate</a>( TRUE );
139 cb13-&gt;<a href="qcheckbox.html#setChecked">setChecked</a>( TRUE );
140
141 // ------------ third group
142
143 // create a buttongroup which is exclusive for radiobuttons and non-exclusive for all other buttons
144 <a href="qbuttongroup.html">QButtonGroup</a> *bgrp3 = new <a href="qbuttongroup.html">QButtonGroup</a>( 1, QGroupBox::Horizontal, "Button Group 3 (Radiobutton-exclusive)", this );
145 box2-&gt;<a href="qboxlayout.html#addWidget">addWidget</a>( bgrp3 );
146<a name="x550"></a> bgrp3-&gt;<a href="qbuttongroup.html#setRadioButtonExclusive">setRadioButtonExclusive</a>( TRUE );
147
148 // insert three radiobuttons
149 rb21 = new <a href="qradiobutton.html">QRadioButton</a>( "Rad&amp;iobutton 1", bgrp3 );
150 rb22 = new <a href="qradiobutton.html">QRadioButton</a>( "Radi&amp;obutton 2", bgrp3 );
151 rb23 = new <a href="qradiobutton.html">QRadioButton</a>( "Radio&amp;button 3", bgrp3 );
152 rb23-&gt;<a href="qradiobutton.html#setChecked">setChecked</a>( TRUE );
153
154 // insert a checkbox...
155 state = new <a href="qcheckbox.html">QCheckBox</a>( "E&amp;nable Radiobuttons", bgrp3 );
156 state-&gt;<a href="qcheckbox.html#setChecked">setChecked</a>( TRUE );
157 // ...and connect its SIGNAL clicked() with the SLOT slotChangeGrp3State()
158 <a href="qobject.html#connect">connect</a>( state, SIGNAL( <a href="qbutton.html#clicked">clicked</a>() ), this, SLOT( slotChangeGrp3State() ) );
159
160 // ------------ fourth group
161
162 // create a groupbox which layouts its childs in a columns
163 <a href="qgroupbox.html">QGroupBox</a> *bgrp4 = new <a href="qbuttongroup.html">QButtonGroup</a>( 1, QGroupBox::Horizontal, "Groupbox with normal buttons", this );
164 box2-&gt;<a href="qboxlayout.html#addWidget">addWidget</a>( bgrp4 );
165
166 // insert four pushbuttons...
167 (void)new <a href="qpushbutton.html">QPushButton</a>( "&amp;Push Button", bgrp4, "push" );
168
169 // now make the second one a toggle button
170 <a href="qpushbutton.html">QPushButton</a> *tb2 = new <a href="qpushbutton.html">QPushButton</a>( "&amp;Toggle Button", bgrp4, "toggle" );
171<a name="x558"></a> tb2-&gt;<a href="qpushbutton.html#setToggleButton">setToggleButton</a>( TRUE );
172<a name="x556"></a> tb2-&gt;<a href="qpushbutton.html#setOn">setOn</a>( TRUE );
173
174 // ... and make the third one a flat button
175 <a href="qpushbutton.html">QPushButton</a> *tb3 = new <a href="qpushbutton.html">QPushButton</a>( "&amp;Flat Button", bgrp4, "flat" );
176<a name="x555"></a> tb3-&gt;<a href="qpushbutton.html#setFlat">setFlat</a>(TRUE);
177
178 // .. and the fourth a button with a menu
179 <a href="qpushbutton.html">QPushButton</a> *tb4 = new <a href="qpushbutton.html">QPushButton</a>( "Popup Button", bgrp4, "popup" );
180 <a href="qpopupmenu.html">QPopupMenu</a> *menu = new <a href="qpopupmenu.html">QPopupMenu</a>(tb4);
181 menu-&gt;<a href="qmenudata.html#insertItem">insertItem</a>("Item1", 0);
182 menu-&gt;<a href="qmenudata.html#insertItem">insertItem</a>("Item2", 1);
183 menu-&gt;<a href="qmenudata.html#insertItem">insertItem</a>("Item3", 2);
184 menu-&gt;<a href="qmenudata.html#insertItem">insertItem</a>("Item4", 3);
185<a name="x557"></a> tb4-&gt;<a href="qpushbutton.html#setPopup">setPopup</a>(menu);
186}
187
188/*
189 * SLOT slotChangeGrp3State()
190 *
191 * enables/disables the radiobuttons of the third buttongroup
192 */
193
194void <a name="f262"></a>ButtonsGroups::slotChangeGrp3State()
195{
196<a name="x560"></a><a name="x551"></a> rb21-&gt;<a href="qwidget.html#setEnabled">setEnabled</a>( state-&gt;<a href="qcheckbox.html#isChecked">isChecked</a>() );
197 rb22-&gt;<a href="qwidget.html#setEnabled">setEnabled</a>( state-&gt;<a href="qcheckbox.html#isChecked">isChecked</a>() );
198 rb23-&gt;<a href="qwidget.html#setEnabled">setEnabled</a>( state-&gt;<a href="qcheckbox.html#isChecked">isChecked</a>() );
199}
200</pre>
201
202<p> <hr>
203<p> Main:
204<pre>/****************************************************************************
205** $Id: buttongroups-example.html 2051 2007-02-21 10:04:20Z chehrlic $
206**
207** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
208**
209** This file is part of an example program for Qt. This example
210** program may be used, distributed and modified without limitation.
211**
212*****************************************************************************/
213
214#include "buttongroups.h"
215#include &lt;<a href="qapplication-h.html">qapplication.h</a>&gt;
216
217int main( int argc, char **argv )
218{
219 <a href="qapplication.html">QApplication</a> a( argc, argv );
220
221 ButtonsGroups buttonsgroups;
222 buttonsgroups.<a href="qwidget.html#resize">resize</a>( 500, 250 );
223 buttonsgroups.<a href="qwidget.html#setCaption">setCaption</a>( "Qt Example - Buttongroups" );
224 a.<a href="qapplication.html#setMainWidget">setMainWidget</a>( &amp;buttonsgroups );
225 buttonsgroups.<a href="qwidget.html#show">show</a>();
226
227 return a.<a href="qapplication.html#exec">exec</a>();
228}
229</pre>
230
231<p>See also <a href="examples.html">Examples</a>.
232
233<!-- eof -->
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237<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
238<td align=right><div align=right>Qt 3.3.8</div>
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