WhyCan Forum(哇酷开发者社区)

int id = QFontDatabase::addApplicationFont("/root/USER/SourceHanSansCN-Regular.ttf");
    QString msyh = QFontDatabase::applicationFontFamilies (id).at(0);
    QFont font(msyh,10);
    font.setPointSize(15);
    a.setFont(font);

SourceHanSansCN-Regular.zip