qt creator中如何实现右键菜单--类似VS中的contentMenu？ [复制链接]

如题目所示，怎么在qt creator中的listview中实现右键菜单啊，发现没有专用控件啊，不知道怎么弄啊，有高手指导指导吗？
非常感谢啊。。。

void MainWindow::createContextMenu()
{
    spreadsheet->addAction(cutAction);
    spreadsheet->addAction(copyAction);
    spreadsheet->addAction(pasteAction);
    spreadsheet->setContextMenuPolicy(Qt::ActionsContextMenu);
}


Any Qt widget can have a list of QActions associated with it. To provide a context menu for the application, we add the desired actions to the Spreadsheet widget and set that widget's context menu policy to show a context menu with these actions. Context menus are invoked by right-clicking a widget or by pressing a platform-specific key.

C++ GUI Programming with Qt 4, Second Edition 第三章中的例子

那请问如何在指定地点出现右键呢？

QContextMenuEvent

能说的详细点吗？小弟才接触Qt，迷茫中呢。。。谢谢哈。。。