Build Tuxedo service in Visual Studio

Question

Hi!
I need to build the executable for a Tuxedo service. The Visual Studio project
already contains a TuxServer.cp file which has the tpsvrinit function, and tux.c
which was generated by BuildTuxedo. It also contains a sybesql.c file and other
codes files. It was a legacy system, and I don't know much about Tuxedo. The machine
I want to build it on already has Visual Studio, Sybase and Tuxedo installed.
How do I set up the environment so I can build the exe in Visual Studio itself?
Thanks,
Caroline

Answer 1

Hello and thank you very much for your answers
Right now I tried RobertH's solution. I'm gona try it also with Coq rouge's link.
To RobertH's way:
I inserted the line __declspec(dllexport) unsigned int __stdcall multiply(unsigned char a, unsigned char b);
and my file looked like this:
#include "stdafx.h"  __declspec(dllexport) unsigned int __stdcall multiply(unsigned char a, unsigned char b);unsigned int multiply(unsigned char a, unsigned char b) {unsigned int c; c = a * b;return c; }
When I tried to compile, i got an errormessage:
error C2373: 'multiply': Neudefinition; unterschiedliche Modifizierer
in English:
error C2373 'multiply': redefinition; different modifier
I could fix this error by editing the line
unsigned int multiply(unsigned char a, unsigned char b)
into
unsigned int __stdcall multiply(unsigned char a, unsigned char b)
but i have no idea if this is the correct way. Maybe this is wrong? Now i could compile.
I also could open the function multiply in LabView. I created at the call library function node the inputs and outputs. LabView described the functionprototype as:
uint16_t ?multiply@@YGIEE@Z(uint8_t a, uint8_t b);
I could start the programm, but I got a LabView errormessage:
Error 1097 occurred at Call Library Function Node in extcodetest.vi
Possible reason(s):
LabVIEW:  An exception occurred within the external code called by a Call Library Function Node. The exception may have corrupted LabVIEW's memory. Save any work to a new location and restart LabVIEW.
I tried both calling conventions, c and stdcall 
At least, i could start the LabView Programm. Thats already a littel success. But i think i will need more help.
Now I'm also gonna try Coq rouge's link.