Qt加载本地字体 .ttc或.ttf

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    //设置本地字体,黑体简

1. int fontId = QFontDatabase::addApplicationFont(QCoreApplication::applicationDirPath() + "/黑体简.TTC");
2. qDebug() << "fontId = "<< fontId;
3. QString msyh = QFontDatabase::applicationFontFamilies(fontId).at(0);
4. qDebug() <<"msyh = " <<msyh;
5. QFont font(msyh);
6. QApplication::setFont(font);