qt退出程序

1.代码

// 杀死主进程
void killProcess()
{
    qint64 pid = QCoreApplication::applicationPid();
    QString cmd = QString("TASKKILL /PID %1 /T /F").arg(pid);
    WinExec(cmd.toLocal8Bit().data(), SW_HIDE);
}

2.示例

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

    killProcess();
     return a.exec();
}