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