菜单和工具条(二)

openAction = new QAction(tr("&Open"), this); 
openAction->setShortcut(QKeySequence::Open); 
openAction->setStatusTip(tr("Open a file.")); 
openAction->setIcon(QIcon(":/Open.png")); // Add code.

class MainWindow : public QMainWindow 
{ 
        Q_OBJECT 
 
public: 
        MainWindow(QWidget *parent = 0); 
        ~MainWindow(); 
 
private slots: 
        void open();         
 
private: 
        QAction *openAction; 
};

MainWindow::MainWindow(QWidget *parent) 
        : QMainWindow(parent) 
{ 
        openAction = new QAction(tr("&Open"), this); 
        openAction->setShortcut(QKeySequence::Open); 
        openAction->setStatusTip(tr("Open a file.")); 
        openAction->setIcon(QIcon(":/Open.png")); 
        connect(openAction, SIGNAL(triggered()), this, SLOT(open())); 
 
        QMenu *file = menuBar()->addMenu(tr("&File")); 
        file->addAction(openAction); 
 
        QToolBar *toolBar = addToolBar(tr("&File")); 
        toolBar->addAction(openAction); 
} 
 
void MainWindow::open() 
{ 
        QMessageBox::information(NULL, tr("Open"), tr("Open a file")); 
}