问题
I have a couple of QDockWidgets that are all not closabale (using Qt 5.6). Therefore, the context menu that is displayed when right-clicking a title bar of one of them only has disabled entries, and I would like to disable the whole context menu.
I tried to set the contextMenuPolicy to NoContextMenu without success.
I then tried to use a subclass of QDockWidget, override the ContextMenuEvent and ignore it. The menu is still displayed.
I then tried to install an event filter to catch the ContextMenuEvent, but it did not catch any, just PaintEvents, ResizeEvents etc.
I'm out of ideas … any help would be greatly appreciated!
回答1:
As per the comments it is necessary to set the context menu policy on the QDockWidget to Qt::PreventContextMenu...
dock_widget->setContextMenuPolicy(Qt::PreventContextMenu);
rather than simply Qt::NoContextMenu. From the documentation Qt::NoContextMenu simply defers the context menu handling to the parent widget rather than preventing it entirely.
来源：https://stackoverflow.com/questions/44601362/how-to-disable-the-context-menu-of-a-qdockwidget-title-bar