Qt界面添加右键菜单

Qt中添加右键菜单其实很简单，只需在构造函数中加入以下代码即可：

//Structure Widget显示右键菜单

    QAction *newMenu = new QAction("新建",ui->Structure);

    QAction *deleteMenu = new QAction("删除",ui->Structure);

    ui->Structure->addAction(newMenu);

    ui->Structure->addAction(deleteMenu);

    connect(newMenu,SIGNAL(triggered(bool)),this,SLOT(on_action_NewMenu_triggered()));

    connect(deleteMenu,SIGNAL(triggered(bool)),this,SLOT(on_action_DeleteMenu_triggered()));

    ui->Structure->setContextMenuPolicy(Qt::ActionsContextMenu);

其中，Structure为我在ui中添加的TreeWidget,只有鼠标在这个widget内右键才能用，不多说，尝试一下就知道;