主动宣告 setProcessState(QProcess::NotRunning)   或者在堆上new一个QProcess。     出处：  https://stackoverflow.com/questions/33874243/qprocessstartdetached-but-hide-console-window

I had exactly the same problem, and could not solve it in a clean way. I have found 2 options:

  1. Hacky way: Subclass QProcess and call setProcessState(QProcess::NotRunning); after starting the process. This will prevent the destructor to terminate the process. But it relies on an implementation detail of QProcess

  2. Create a memory leak: Dynamically create the QProcess on the heap, but never delete it, and thus never invoke its destructor

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{
    QProcess *process = new QProcess;
    process->start("taskkill", QStringList() << "/f" << "/im" << "My Service.exe");
}

 

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