Qt 百分比进度条显示

	QProgressDialog process;
	process.setRange(0, face_szie);
	process.setModal(true);
    process.setWindowIconText(tr("get face information ..."));

    for (int i = 0; i < face_szie; i++)
    {
        TopoDS_Face current_face = workpiece_show_faces.at(i).face;
        get_FaceInfo_from_TopoFace(current_face,i);

        process.setValue(i);
        process.setLabelText(tr("got %1 faces ...").arg(i));
        process.show();
    }