Qt QListView - context menus?

I'm trying to add a context (right click) menu to a Qt QListView. 开发者_Python百科I see in Qt 3.3 there is "contextMenuRequested" (which I could use) - http://doc.qt.digia.com/3.3/qlistview.html#contextMenuRequested. However, I can't see such a method in Qt4. Does anyone know how to add a context menu to a QListView?

Depending on how you have set up the ContextMenuPolicy in the QWidget you have a few options.

If you've set it to Qt::DefaultContextMenu then just override the contextMenuEvent(QContextMenuEvent*) protected function in QWidget. I believe that this is the default.

If you've set it to Qt::ActionsContextMenu then just add all your actions to your widget and let the Qt system handle showing the context menu.

Or if you've set it to Qt::CustomContextMenu you need to connect to the customContextMenuRequested() signal and implement your own context menu handler.

This is all documented in the ContextMenuPolicy documentation available online.

I don't know what you are trying to accomplish but you can easily add a context menu to any widget by calling QWidget::AddAction(QAction*) with the actions that you want to add to your context menu and setting the context menu policy

widget->setContextMenuPolicy(Qt::ActionsContextMenu);

the widget will prepare and show the context menu, all you need to do is hook up the actions triggered() signals to the appropriate handlers

I don't know why the signal has been removed but it's still a QWidget so you can always override

void QWidget::contextMenuEvent ( QContextMenuEvent* );

or

void QWidget::customContextMenuRequested( const QPoint& pos );

depending on your context menu policy setting for the widget.