[ Version ( since = "3.12" ) ]
public void set_popover (Widget? popover)
Sets the `GtkPopover` that will be popped up when the this is clicked.
If popover is null, the button is disabled.
If [property@Gtk.MenuButton:menu-model] is set, the menu model is dissociated from the this, and the property is set to null.
| this |
a `GtkMenuButton` |
| popover |
a `GtkPopover`, or null to unset and disable the button |