func BuilderNewFromFile(filePath string) (*Builder, error) {
	cstr := C.CString(filePath)
	defer C.free(unsafe.Pointer(cstr))

	c := C.gtk_builder_new_from_file((*C.gchar)(cstr))
	if c == nil {
		return nil, nilPtrErr
	}

	obj := glib.Take(unsafe.Pointer(c))
	return &Builder{obj}, nil
}
func BuilderNewFromFile(filePath string) (*Builder, error) {
	cstr := C.CString(filePath)
	defer C.free(unsafe.Pointer(cstr))

	c := C.gtk_builder_new_from_file((*C.gchar)(cstr))
	if c == nil {
		return nil, nilPtrErr
	}

	obj := glib.Take(unsafe.Pointer(c))
	return &Builder{obj}, nil
}
// BuilderNewFromFile is a wrapper around gtk_builder_new_from_file().