Hi

I make a wraper dll ...

So, I need to export to aplication some result...

Well. this is code:

xVideo.h

#ifndef xVideoDEF

#define xVideoDEF(f) WINAPI f

#endif



typedef BOOL (CALLBACK CallBackEnumerator)(char * name,GUID guid,void * user);

/*

name - the device name

GUID - the device CLSID

user - The 'user' parameter

*/



//xVideo_Capture_xxx functions flags

//...........................................

#define xVideo_AudioCapture 0x10066

#define xVideo_VideoCapture 0x10080



int xVideoDEF(xVideo_CaptureGetDevices)(DWORD devicetype,CallBackEnumerator *callback,void* user);

// Of course, this is only part of xVideo.h, But I only have problems with callbacks, This here is only one from

//several simiral callbacks

//************************************************************

main.cpp
#include <windows.h>
#include <xVideo.h>
using namespace std;
#define export extern "C" __declspec (dllexport)

BOOL APIENTRY DllMain (HINSTANCE hInst /* Library instance handle. */ ,

DWORD reason /* Reason this function is being called. */ ,

LPVOID reserved /* Not used. */ )

{

switch (reason)

{

case DLL_PROCESS_ATTACH:
break;
case DLL_PROCESS_DETACH:

break;
case DLL_THREAD_ATTACH:

break;
case DLL_THREAD_DETACH:

break;
}

/* return (double)s TRUE on success, FALSE on failure */

return TRUE;

}

extern "C" {

export double GM_xVideo_CaptureGetDevices(double devicetype){

double result=0;

if (devicetype==0){result=(double)(int) xVideo_CaptureGetDevices(xVideo_AudioCapture,&GetDevicesCallback,NULL); }

if (devicetype==1){result= (double)(int)xVideo_CaptureGetDevices(xVideo_VideoCapture,&GetVideoDevicesCallback,NULL); }

return(double)result;

}

}

// This is only error related part of all main.cpp

//************************************************************

Please What to do??? Callbacks in this way don't work

I was try to make *.def file, but i got only errors...

Tnx in advance