Looks like there is no direct access to the thread of the PID I want, but by reading thru the whole list we can get there.

But you are still missing the point. The information available in the THREADENTRY32 structure return by Thread32First/Next() calls does not include a thread handle, only a thread ID.

  • use SetThreadPriority to modify the thread.

    • SetThreadPriority() requires a thread handle as it's first parameter, and there is no way to go from a thread ID to a thread handle.

    Ergo. Even if you solve your current problem with Process32First, you will arrive at a place where you still cannot do what you are trying to do.

    Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
    Lingua non convalesco, consenesco et abolesco. -- Rule 1 has a caveat! -- Who broke the cabal?
    "Science is about questioning the status quo. Questioning authority".
    In the absence of evidence, opinion is indistinguishable from prejudice.

    In reply to Re^13: how to change process & thread priority on Win32 ? by BrowserUk
    in thread how to change process & thread priority on Win32 ? by rbutcher

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