Popup Context Menu
Lots of people need to implement right-click context menus for TreeView's so we will explain how to do that here to save you some time. Apart from one or two points, it's much the same as a normal context menu, as described in the menus chapter.
- 10.7.1. Handling button_press_event
10.7.1. Handling button_press_event
To detect a click of the right mouse button, you need to handle the button_press_event signal, and check exactly which button was pressed. Because the TreeView normally handles this signal completely, you need to either override the default signal handler in a derived TreeView class, use connect_notify() or use connect(slot, /* after= */ false). You probably also want to call the default handler before doing anything else, so that the right-click will cause the row to be selected first.
This is demonstrated in the Popup Context Menu example.