int main(int argc, char *argv[]) { QApplication a(argc, argv); QTextCodec::setCodecForTr(QTextCodec::codecForName("UTF-8")); MainFrame w; a.setApplicationName("FireDetection"); a.setApplicationVersion("V201509"); w.show(); w.setGeometry(qApp->desktop()->availableGeometry());//全屏运行 return a.exec(); }