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This example program shows how to use an exclusive action group.
Detailed explanations of the code can be found in the walkthrough.
Main:
/* $Id$ */ #include <qapplication.h> #include "editor.h" int main( int argc, char ** argv) { QApplication app( argc, argv ); Editor * editor = new Editor; app.setMainWidget( editor ); editor->show(); return app.exec(); }
Header file:
/* $Id$ */ #ifndef EDITOR_H #define EDITOR_H #include <qmainwindow.h> class QTextEdit; class QAction; class Editor : public QMainWindow { Q_OBJECT public: Editor(); private slots: void setFontColor( QAction * ); private: QTextEdit * editor; QAction * setRedFont; }; #endif
Implementation:
/* $Id$ */ #include "editor.h" #include <qtextedit.h> #include <qmenubar.h> #include <qpopupmenu.h> #include <qtoolbar.h> #include <qaction.h> Editor::Editor() : QMainWindow( 0, "main window") { QActionGroup * colors = new QActionGroup( this, "colors", TRUE ); QAction * setBlackFont = new QAction( "black", QPixmap( "black.xpm" ), "Font color: black", CTRL+Key_B, colors, "blackfontcolor", TRUE ); setRedFont = new QAction( "red", QPixmap( "red.xpm" ), "Font color: red", CTRL+Key_R, colors, "redfontcolor", TRUE ); QObject::connect( colors, SIGNAL( selected( QAction * ) ), this, SLOT( setFontColor( QAction * ) ) ); QToolBar * toolbar = new QToolBar( this, "toolbar" ); colors->addTo( toolbar ); QPopupMenu * font = new QPopupMenu( this ); menuBar()->insertItem( "&Font", font ); colors->setUsesDropDown( TRUE ); colors->setMenuText( "Font Color" ); colors->addTo( font ); editor = new QTextEdit( this, "editor" ); setCentralWidget( editor ); } void Editor::setFontColor( QAction * coloraction ) { if ( coloraction == setRedFont ) editor->setColor( red ); else editor->setColor( black ); }
Copyright © 2001 Trolltech | Trademarks | Qt version 3.0.0-beta2
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