gtk/gtk_deprecated_since_3_22.go
func (v *Menu) PopupAtMouseCursor(parentMenuShell IMenu, parentMenuItem IMenuItem, button int, activateTime uint32) {
	wshell := nullableWidget(parentMenuShell)
	witem := nullableWidget(parentMenuItem)

	C.gtk_menu_popup(v.native(),
		wshell,
		witem,
		nil,
		nil,
		C.guint(button),
		C.guint32(activateTime))
}
func (v *Menu) PopupAtMouseCursor(parentMenuShell IMenu, parentMenuItem IMenuItem, button int, activateTime uint32) {
	wshell := nullableWidget(parentMenuShell)
	witem := nullableWidget(parentMenuItem)

	C.gtk_menu_popup(v.native(),
		wshell,
		witem,
		nil,
		nil,
		C.guint(button),
		C.guint32(activateTime))
}
// PopupAtMouse() is a wrapper for gtk_menu_popup(), without the option for a custom positioning function.