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undocumented dlls

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  #1  
Old September 25th, 2003, 08:35 PM
gadams00 gadams00 is offline
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undocumented dlls
I'm trying to find out how to determine the function arguments in an undocumented dll. The company I work for has a proprietary dll that I need to "hack" into, determine how to use it. I can get the function (or method) names from depend.exe (included with MS Visual Studio), but this neat little tool doesn't show me the function's parameters to use. Is this impossible? I've been searching the web for a couple of hours trying to find it.

I tried adding it to "Project->References" in VB6 and it gives an "unable to add reference" error message. Also there is no DllRegisterServer shown in Depend, so I'm assuming this is a straight Win32 dll, not an activeX dll, right? I don't know very much about dll's, just that they are effectively libraries of functions, compiled and relocatable. I guess that activeX dll's are more... but I don't know how. Any info is appreciated.

Greg
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Old September 25th, 2003, 09:51 PM
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If it was written in C, then you should be able to view it's header file that you would include with a C/C++ project.
Other than that, I don't know of any immediate way to do this.
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Old September 26th, 2003, 12:31 AM
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You can potentially guess the param types (but not the names) from the function name. See question 2 in this FAQ:
http://www.dependencywalker.com/faq.html
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Old September 26th, 2003, 07:47 AM
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That is very interesting.
Thanks for the link.
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Old September 26th, 2003, 10:52 AM
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Fine!Scorpions4ever!Every thing is possible!..
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