Qt-Quit

调用退出

int main(int argc, char *argv[])
{

QApplication a( argc, argv );    QPushButton quit( "Quit", 0 );    quit.resize( 175, 80 );    quit.setFont( QFont( "Times", 18, QFont::Bold ) );    QObject::connect( &quit, SIGNAL(clicked()), &a, SLOT(quit()) );    //a.setMainWidget( &quit );    quit.show();    return a.exec();

}

结果截图

头文件