如何在Windows上通过QProcess启动提升的子流程？

Question

I'm using the QProcess class to start a subprocess that performs a task. Sometimes the process needs administrator privileges. On Linux I simply run it through pkexec and everything just works. How can I accomplish the same effect on Windows?

To be clear: I want to be able to decide at runtime whether to run it as Administrator or not. I also need to be able to communicate with the process via stdin/stdout.

Or, to put it in code:

void modifyArgsForRoot(QString &program, QStringList &args)
{
#if defined(Q_OS_LINUX)
    args.prepend(program);
    program = "pkexec";
#elif defined(Q_OS_WIN32)
    // what do I put here? //////////////////////////////
#endif
}

void foo()
{
    QProcess p;
    QString program;
    QStringList arguments;
    // ......
    if (!hasWriteAccessToCertainDir())
        modifyArgsForRoot(program, arguments);

    p.start(program, arguments);
}

Answer 1

You might want to have a look at the runas command , which is somewhat of an alternative to pkexec for Windows.

For instance, you could try

#elif defined(Q_OS_WIN32)
    args.prepend(program);
    args.prepend("/user:mymachine\administrator"); // Change accordingly
    args.prepend("/noprofile"); // See link above
    program = "runas";
#endif

Edit: You could also try to use a manifest, as described here .