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  1. Re: Error 998 when acessing variable from unmanaged code second time

    Hi Paul

    Thanks for response. You are right - the 57 should be length - I used 57 there because according the documentation that is the maximum size for the returned array - I've been trying lots...
  2. GetLastError = 998 when calling unmanaged code for the second time, first time works

    I am accessing a third party DLL that drives a USB device. The first time I access the DLL I can receive the results of the activity on the device without a problem. If I run the same test again I...
  3. Error 998 when acessing variable from unmanaged code second time

    Sorry wrong forum - I have reposted to .Net / c sharp forum - sorry

    I am accessing a third party DLL that drives a USB device. The first time I access the DLL I can receive the results of the...
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    Win32 Erro 998 when calling unmanaged code

    Hi

    I'm making a call to an unmanaged C++ library in order to retrieve data from a device, I have tried numerous different methods but can't seem to get the call to work.

    I'm pretty to new to...
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