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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><!-- /home/reggie/tmp/qt-3.0-reggie-5401/qt-x11-commercial-3.0.5/examples/buttongroups/buttongroups.doc:4 --><html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>Buttons and Groupboxes</title><style type="text/css"><!--h3.fn,span.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>Buttons and Groupboxes</h1> <p> This example shows different types of groupboxes (buttongroups, etc.) and different kinds of buttons (checkboxes, radiobuttons, pushbuttons, etc.).<p> <hr><p> Header file:<p> <pre>/****************************************************************************** $Id: qt/buttongroups.h 3.0.5 edited Oct 12 2001 $**** Copyright (C) 1992-2000 Trolltech AS. All rights reserved.**** This file is part of an example program for Qt. This example** program may be used, distributed and modified without limitation.*******************************************************************************/#ifndef BUTTONS_GROUPS_H#define BUTTONS_GROUPS_H#include <<a href="qwidget-h.html">qwidget.h</a>>class QCheckBox;class QRadioButton;class ButtonsGroups : public <a href="qwidget.html">QWidget</a>{ <a href="metaobjects.html#Q_OBJECT">Q_OBJECT</a>public: ButtonsGroups( <a href="qwidget.html">QWidget</a> *parent = 0, const char *name = 0 );protected: <a href="qcheckbox.html">QCheckBox</a> *state; <a href="qradiobutton.html">QRadioButton</a> *rb21, *rb22, *rb23;protected slots: void slotChangeGrp3State();};#endif</pre><p> <hr><p> Implementation:<p> <pre>/****************************************************************************** $Id: qt/buttongroups.cpp 3.0.5 edited Jun 4 09:54 $**** Copyright (C) 1992-2000 Trolltech AS. All rights reserved.**** This file is part of an example program for Qt. This example** program may be used, distributed and modified without limitation.*******************************************************************************/#include "buttongroups.h"#include <<a href="qbuttongroup-h.html">qbuttongroup.h</a>>#include <<a href="qlayout-h.html">qlayout.h</a>>#include <<a href="qradiobutton-h.html">qradiobutton.h</a>>#include <<a href="qcheckbox-h.html">qcheckbox.h</a>>#include <<a href="qgroupbox-h.html">qgroupbox.h</a>>#include <<a href="qpushbutton-h.html">qpushbutton.h</a>>/* * Constructor * * Creates all child widgets of the ButtonGroups window */<a name="f219"></a>ButtonsGroups::ButtonsGroups( <a href="qwidget.html">QWidget</a> *parent, const char *name ) : <a href="qwidget.html">QWidget</a>( parent, name ){ // Create Widgets which allow easy layouting <a href="qvboxlayout.html">QVBoxLayout</a> *vbox = new <a href="qvboxlayout.html">QVBoxLayout</a>( this, 11, 6 ); <a href="qhboxlayout.html">QHBoxLayout</a> *box1 = new <a href="qhboxlayout.html">QHBoxLayout</a>( vbox ); <a href="qhboxlayout.html">QHBoxLayout</a> *box2 = new <a href="qhboxlayout.html">QHBoxLayout</a>( vbox ); // ------- first group // Create an exclusive button group <a href="qbuttongroup.html">QButtonGroup</a> *bgrp1 = new <a href="qbuttongroup.html">QButtonGroup</a>( 1, QGroupBox::Horizontal, "Button Group &1 (exclusive)", this); box1-><a href="qboxlayout.html#addWidget">addWidget</a>( bgrp1 );<a name="x500"></a> bgrp1-><a href="qbuttongroup.html#setExclusive">setExclusive</a>( TRUE ); // insert 3 radiobuttons <a href="qradiobutton.html">QRadioButton</a> *rb11 = new <a href="qradiobutton.html">QRadioButton</a>( "&Radiobutton 1", bgrp1 );<a name="x508"></a> rb11-><a href="qradiobutton.html#setChecked">setChecked</a>( TRUE ); (void)new <a href="qradiobutton.html">QRadioButton</a>( "R&adiobutton 2", bgrp1 ); (void)new <a href="qradiobutton.html">QRadioButton</a>( "Ra&diobutton 3", bgrp1 ); // ------- second group // Create a non-exclusive buttongroup <a href="qbuttongroup.html">QButtonGroup</a> *bgrp2 = new <a href="qbuttongroup.html">QButtonGroup</a>( 1, QGroupBox::Horizontal, "Button Group &2 (non-exclusive)", this ); box1-><a href="qboxlayout.html#addWidget">addWidget</a>( bgrp2 ); bgrp2-><a href="qbuttongroup.html#setExclusive">setExclusive</a>( FALSE ); // insert 3 checkboxes (void)new <a href="qcheckbox.html">QCheckBox</a>( "&Checkbox 1", bgrp2 ); <a href="qcheckbox.html">QCheckBox</a> *cb12 = new <a href="qcheckbox.html">QCheckBox</a>( "C&heckbox 2", bgrp2 );<a name="x503"></a> cb12-><a href="qcheckbox.html#setChecked">setChecked</a>( TRUE ); <a href="qcheckbox.html">QCheckBox</a> *cb13 = new <a href="qcheckbox.html">QCheckBox</a>( "Triple &State Button", bgrp2 );<a name="x504"></a> cb13-><a href="qcheckbox.html#setTristate">setTristate</a>( TRUE ); cb13-><a href="qcheckbox.html#setChecked">setChecked</a>( TRUE ); // ------------ third group // create a buttongroup which is exclusive for radiobuttons and non-exclusive for all other buttons <a href="qbuttongroup.html">QButtonGroup</a> *bgrp3 = new <a href="qbuttongroup.html">QButtonGroup</a>( 1, QGroupBox::Horizontal, "Button Group &3 (Radiobutton-exclusive)", this ); box2-><a href="qboxlayout.html#addWidget">addWidget</a>( bgrp3 );<a name="x501"></a> bgrp3-><a href="qbuttongroup.html#setRadioButtonExclusive">setRadioButtonExclusive</a>( TRUE ); // insert three radiobuttons rb21 = new <a href="qradiobutton.html">QRadioButton</a>( "Rad&iobutton 1", bgrp3 ); rb22 = new <a href="qradiobutton.html">QRadioButton</a>( "Radi&obutton 2", bgrp3 ); rb23 = new <a href="qradiobutton.html">QRadioButton</a>( "Radio&button 3", bgrp3 ); rb23-><a href="qradiobutton.html#setChecked">setChecked</a>( TRUE ); // insert a checkbox... state = new <a href="qcheckbox.html">QCheckBox</a>( "E&nable Radiobuttons", bgrp3 ); state-><a href="qcheckbox.html#setChecked">setChecked</a>( TRUE ); // ...and connect its SIGNAL clicked() with the SLOT slotChangeGrp3State() <a href="qobject.html#connect">connect</a>( state, SIGNAL( <a href="qbutton.html#clicked">clicked</a>() ), this, SLOT( slotChangeGrp3State() ) ); // ------------ fourth group // create a groupbox which layouts its childs in a columns <a href="qgroupbox.html">QGroupBox</a> *bgrp4 = new <a href="qbuttongroup.html">QButtonGroup</a>( 1, QGroupBox::Horizontal, "Groupbox with &normal buttons", this ); box2-><a href="qboxlayout.html#addWidget">addWidget</a>( bgrp4 ); // insert three pushbuttons... (void)new <a href="qpushbutton.html">QPushButton</a>( "&Push Button", bgrp4 ); <a href="qpushbutton.html">QPushButton</a> *tb2 = new <a href="qpushbutton.html">QPushButton</a>( "&Toggle Button", bgrp4 ); <a href="qpushbutton.html">QPushButton</a> *tb3 = new <a href="qpushbutton.html">QPushButton</a>( "&Flat Button", bgrp4 ); // ... and make the second one a toggle button<a name="x507"></a> tb2-><a href="qpushbutton.html#setToggleButton">setToggleButton</a>( TRUE );<a name="x506"></a> tb2-><a href="qpushbutton.html#setOn">setOn</a>( TRUE ); // ... and make the third one a flat button<a name="x505"></a> tb3-><a href="qpushbutton.html#setFlat">setFlat</a>(TRUE);}/* * SLOT slotChangeGrp3State() * * enables/disables the radiobuttons of the third buttongroup */void <a name="f220"></a>ButtonsGroups::slotChangeGrp3State(){<a name="x509"></a><a name="x502"></a> rb21-><a href="qwidget.html#setEnabled">setEnabled</a>( state-><a href="qcheckbox.html#isChecked">isChecked</a>() ); rb22-><a href="qwidget.html#setEnabled">setEnabled</a>( state-><a href="qcheckbox.html#isChecked">isChecked</a>() ); rb23-><a href="qwidget.html#setEnabled">setEnabled</a>( state-><a href="qcheckbox.html#isChecked">isChecked</a>() );}</pre><p> <hr><p> Main:<pre>/****************************************************************************** $Id: qt/main.cpp 3.0.5 edited Oct 12 2001 $**** Copyright (C) 1992-2000 Trolltech AS. All rights reserved.**** This file is part of an example program for Qt. This example** program may be used, distributed and modified without limitation.*******************************************************************************/#include "buttongroups.h"#include <<a href="qapplication-h.html">qapplication.h</a>>int main( int argc, char **argv ){ <a href="qapplication.html">QApplication</a> a( argc, argv ); ButtonsGroups buttonsgroups; buttonsgroups.<a href="qwidget.html#resize">resize</a>( 500, 250 );<a name="x513"></a> buttonsgroups.<a href="qwidget.html#setCaption">setCaption</a>( "Qt Example - Buttongroups" ); a.<a href="qapplication.html#setMainWidget">setMainWidget</a>( &buttonsgroups ); buttonsgroups.<a href="qwidget.html#show">show</a>(); return a.<a href="qapplication.html#exec">exec</a>();}</pre><p>See also <a href="examples.html">Examples</a>.<!-- eof --><p><address><hr><div align=center><table width=100% cellspacing=0 border=0><tr><td>Copyright © 2002 <a href="http://www.trolltech.com">Trolltech</a><td><a href="http://www.trolltech.com/trademarks.html">Trademarks</a><td align=right><div align=right>Qt version 3.0.5</div></table></div></address></body></html>⌨️ 快捷键说明
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