gtk/window.go
func (v *Window) ActivateFocus() bool {
	c := C.gtk_window_activate_focus(v.native())
	return gobool(c)
}
func (v *Window) ActivateFocus() bool {
	c := C.gtk_window_activate_focus(v.native())
	return gobool(c)
}
// ActivateFocus is a wrapper around gtk_window_activate_focus().