func ProgressBarNew() (*ProgressBar, error) {
	c := C.gtk_progress_bar_new()
	if c == nil {
		return nil, nilPtrErr
	}
	return wrapProgressBar(glib.Take(unsafe.Pointer(c))), nil
}
func ProgressBarNew() (*ProgressBar, error) {
	c := C.gtk_progress_bar_new()
	if c == nil {
		return nil, nilPtrErr
	}
	return wrapProgressBar(glib.Take(unsafe.Pointer(c))), nil
}
// ProgressBarNew() is a wrapper around gtk_progress_bar_new().