Widget.connectPopupMenu

gulong connectPopupMenu(T)(T callback,  Flag!"After" after =  No.After) if (isCallable!T
    &&  is(ReturnType!T ==  bool)
   && (Parameters!T.length <  1 || (ParameterStorageClassTuple!T[0]  ==  ParameterStorageClass.none &&  is(Parameters!T[0] :  gtk.widget.Widget)))
   &&  Parameters!T.length <  2)

Connect to PopupMenu signal.

This signal gets emitted whenever a widget should pop up a context menu. This usually happens through the standard key binding mechanism; by pressing a certain key while a widget is focused, the user can cause the widget to pop up a menu. For example, the #GtkEntry widget creates a menu with clipboard commands. See the [Popup Menu Migration Checklist][checklist-popup-menu] for an example of how to use this signal.

Parameters

`callback`	signal callback delegate or function to connect `bool callback(gtk.widget.Widget widget)` `widget` the instance the signal is connected to (optional) `Returns` true if a menu was activated
`after`	Yes.After to execute callback after default handler, No.After to execute before (default)

Returns

Signal ID