当我们需要在QT程序中添加右键弹出菜单时，可以使用QMenu和QAction类来实现。首先创建一个QMenu对象，然后添加QAction对象到菜单中。接着在需要右键弹出菜单的控件中调用QMenu的exec()函数即可显示菜单。具体操作步骤请看下面的例子代码：

QMenu menu = new QMenu(this);

QAction action1 = new QAction(tr("Action1"), this);

QAction *action2 = new QAction(tr("Action2"), this);

menu->addAction(action1);

menu->addAction(action2);

connect(action1, SIGNAL(triggered()), this, SLOT(onAction1Clicked()));

connect(action2, SIGNAL(triggered()), this, SLOT(onAction2Clicked()));

void onRightButtonClicked()

{

menu->exec(QCursor::pos());

}