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Hello. I have an old VB project using a dynamic library. I thought it would be good to use this from Python through ctypes. However, the information of function names in the dll is stripped. If I open the dll with the dependency viewer I get something like: 4 (0x0004) Function N/A Entry point 0x0006C3A8 6 (0x0006) Function N/A Entry point 0x00001000 ... up to entry 1081. However, the VB project using this DLL contains a "Public declare" file which only uses 22 functions, and they are in the form: Public Declare Function DllGetVersion _ Lib "LIBDLL" _ Alias "#2" _ () _ As String where the only thing changing is the name of the function, the alias number and the type of parameters (this function doesn't require any). The aliases start with "#1" and go up to "#21". Now, how do I relate this into Python? I can access the DLL: dll = ctypes.windll.LIBDLL prototype = ctypes.WINFUNCTYPE(ctypes.wintypes.LPCSTR) GetDllVersion = prototype(dll[6]) print "GetDllVersion: '%s'" % repr(GetDllVersion()) So I thought the alias #2 thingy specifies the order inside the DLL, which would be function 6, since that is the second one. But the result I'm getting is GetDllVersion: '' \x07\x10D'' The respective VB code would be: MsgBox ("Version " & DllGetVersion) Which outputs: Version 1.3.0 (Build 403) Far different from what I'm getting in python. So how can I use the VB declaration file to access the DLL the same way? Unfortunately the DLL doesn't expose the names, so I can only access functions with the attribute getter using an index. I tried to search for the function using a loop over all the functions, but that seems to hang up on nearly every second function. Besides, I might be doing something wrong with the return value. Any suggestions? --
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