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Thread: Intercepting / Hooking Api Calls

  1. Apr 28th, 2004, 06:00 AM #1
    da_silvy
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    Intercepting / Hooking Api Calls

    I was wondering whether i could wrap / hook GetCursorPos and SetCursorPos

    I know that it can be done, I just don't know how

    If someone could help me it'd be great
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  2. Apr 28th, 2004, 07:39 AM #2
    CornedBee
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    There's a description of techniques in "Windows Programming for Experts" by Jeffrey Richter. But if you don't want to buy it (I recommend it though), here's a quick synopsis.

    You get the address of the function. At this address you grab the first few bytes and replace them by a jump instruction to your code. Your code then executes. At the end you execute the bytes you took away and jump back to the next address.
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  3. Apr 28th, 2004, 07:57 AM #3
    da_silvy
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    so it involves getprocaddress

    i'm afraid i'm going to need more help than that :P!
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