Re: VC++ .NET 2005 prepending underscore to external functions references

"Jett Gamboa" <jett@discussions.microsoft.com> wrote in message
news:u16VtRzxGHA.3400@TK2MSFTNGP05.phx.gbl...


OK, that's an important bit of information because of the name mangling
issue.

Remember that early on I asked for the dump of the DLL's export table. Your
dump showed that the names of the exports were not decorated. So I built a
DLL with an undecorated export name and a console application with VS2005.

    // This is the source to the DLL

        void __stdcall Clear_Device_Prn(void)
        {
        }

    // This is the source to its module definition file

        LIBRARY Jett

        EXPORTS

            Clear_Device_Prn

I dumped the export table for the DLL and got this

//-----------------------------------------------------
Microsoft (R) COFF Binary File Dumper Version 6.00.8447
Copyright (C) Microsoft Corp 1992-1998. All rights reserved.

Dump of file Jett.dll

File Type: DLL

  Section contains the following exports for Jett.dll

           0 characteristics
    44EDD321 time date stamp Thu Aug 24 12:26:09 2006
        0.00 version
           1 ordinal base
           1 number of functions
           1 number of names

    ordinal hint RVA name

          1 0 000110A5 Clear_Device_Prn

  Summary

        1000 .data
        1000 .idata
        2000 .rdata
        1000 .reloc
        1000 .rsrc
        4000 .text
       10000 .textbss
//-----------------------------------------------------

Notice that the name of the export displayed by the dump is the same as the
name that you reported.

This is the C source to the console application that calls the function in
the DLL

    __declspec(dllimport) void __stdcall Clear_Device_Prn();

    int main()
    {
     Clear_Device_Prn();
     return 0;
    }

It works like a charm here.

To solve your problem I suggest that you take a similar tack. Start with a
really small console application. Go easy on the headers and macros and turn
of the precompiled header option. Then link. Make sure that works. Then
start adding complexity a little bit at time but only after you get a good
first link.

Regards,
Will