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Thread: A problem with forwarding an exported function in a DLL

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  1. #1
    mehdi311ggg
    Guest

    A problem with forwarding an exported function in a DLL

    Hi
    I am forwarding an exported function of a DLL to another function in my DLL. I use ExpX64 for editing the export table of the DLL.
    (for example I forward the ?MyFunc@MyClass@@SAJJAEAUMyStruct@@@Z to myDLL.?MyFunc@MyClass@@SAJJAEAUMyStruct@@@Z)
    My problem is that my target function is a member of a class and in runtime, forwarding that generates a COMException ("attempted to use an object that has ceased to exist")
    What do you think I'm doing wrong? (Calling conventions? And there should be a difference between forwarding a regular function and a class-member one.)
    I implement MyFunc like this:

    Code:
    __declspec(dllexport) LONG MyClass::MyFunc (long a,struct MyStruct& b)
    ps: I can also use a DLL proxy (create a proxy DLL that implements the target function I want and forward all other functions to the original DLL, but the problem that my function is part of a class, still remains)

    Thanks
    I promise that I have read the FAQ and tried to use the Search to answer my question.

  2. #2
    as in your other post
    http://stackoverflow.com/questions/4477668/a-problem-with-forwarding-an-exported-function-in-a-dll
    export forwarding is not a cause of this error

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