Hi, Rob ! As for your 2nd question : cl /Gz double_test double.lib works fine. /Gz forces __stdcall which means : look for decorated names like _my_double@4 (while default __cdecl makes the linker look for decorated names like _my_double = exactly the LNK2019 error you get) See http://msdn.microsoft.com/en-us/library/x7kb4e2f.aspx for (C) decorated names. Regards, Jean-Marc

In reply to Re: [OT - MS Visual Studio] How to build a dll that Win32::API can access by JMD-Rome
in thread [OT - MS Visual Studio] How to build a dll that Win32::API can access by syphilis

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