12.Qt设置快捷键

Qt设置快捷键

• QShortcut(QKeySequence(tr("Ctrl+O", "File|Open")),this)：构造一个键盘Ctrl+O的快捷键，this是在当前整个窗口
• &QShortcut::activated：需要绑定这个信号，用于处理对应的业务

//设置Ctrl+O的快捷键
QShortcut *shortcutOpen = new QShortcut(QKeySequence(tr("Ctrl+O", "File|Open")),this);

QShortcut *shortcutSave = new QShortcut(QKeySequence(tr("Ctrl+S", "File|Save")),this);

QShortcut *shortcutZoomIn = new QShortcut(QKeySequence(tr("Ctrl+Shift+=","File|ZoomIn")),this);

QShortcut *shortcutZoomOut = new QShortcut(QKeySequence(tr("Ctrl+Shift+-", "File|ZoomOut")),this);

connect(shortcutOpen,&QShortcut::activated,[=](){
    on_btnOpen_clicked();
});

connect(shortcutSave,&QShortcut::activated,[=](){
    on_btnSave_clicked();
});

connect(shortcutZoomIn,&QShortcut::activated,[=](){
    zoomIn();
});

connect(shortcutZoomOut,&QShortcut::activated,[=](){
    zoomOut();
});