gtk/app_chooser.go
func (v *AppChooserDialog) GetHeading() (string, error) {
	cstr := C.gtk_app_chooser_dialog_get_heading(v.native())
	if cstr == nil {
		return "", nilPtrErr
	}
	defer C.free(unsafe.Pointer(cstr))
	return C.GoString((*C.char)(cstr)), nil
}
func (v *AppChooserDialog) GetHeading() (string, error) {
	cstr := C.gtk_app_chooser_dialog_get_heading(v.native())
	if cstr == nil {
		return "", nilPtrErr
	}
	defer C.free(unsafe.Pointer(cstr))
	return C.GoString((*C.char)(cstr)), nil
}
// GetHeading() is a wrapper around gtk_app_chooser_dialog_get_heading().
// In case when gtk_app_chooser_dialog_get_heading() returns a nil string,
// GetHeading() returns a non-nil error.