gtk/gtk_since_3_20.go
func (v *NativeDialog) SetTitle(title string) {
	cstr := C.CString(title)
	defer C.free(unsafe.Pointer(cstr))
	C.gtk_native_dialog_set_title(v.native(), (*C.char)(cstr))
}
func (v *NativeDialog) SetTitle(title string) {
	cstr := C.CString(title)
	defer C.free(unsafe.Pointer(cstr))
	C.gtk_native_dialog_set_title(v.native(), (*C.char)(cstr))
}
// SetTitle is a wrapper around gtk_native_dialog_set_title().