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From: | "Willis, Matthew" <Matthew DOT Willis AT CIBC DOT ca> |
To: | "'cygwin AT cygwin DOT com'" <cygwin AT cygwin DOT com> |
Subject: | Q. on creating DLL's for use w/ excel (export names without @0, @ |
4 etc?) (cygwin 1.3.13-2) | |
Date: | Mon, 4 Nov 2002 14:07:10 -0500 |
MIME-Version: | 1.0 |
I've searched on google for some references to interfacing cygwin with win32 dll's. I've made a little progress but am kind of stuck creating DLL's inside cygwin. The method I am using is the following: /* foo.c */ #include <windows.h> int WINAPI foobar() { return 1234; } gcc -mno-cygwin foo.c -c gcc -Wl,--out-implib,libfoo.import.a -mno-cygwin -shared -o foo.dll foo.o When I look at the DLL file with MSVC's "depends.exe" I see the symbol is "foobar AT 0" -- and I guess the @0 refers to how many bytes the function args take (I get @4 with a pointer to double, etc.). The only way I can make the symbols available to excel's visual basic interface is to cheat and hexedit foo.dll to change "foobar AT 0" to "foobarX0". Then I can put a few lines in my excel modules like Declare Function foobarX0 Lib "e:\dlltest\foo.dll" () As Integer Function MattVersion() Dim i As Integer i = foobarX0() MattVersion = "MW 0.0.1.0.1." + Str(i) End Function Surely there is a better way. Can anyone suggest a better technique? -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Bug reporting: http://cygwin.com/bugs.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
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