DLL TBitmap

[eric steel]

ich habe folgendes Problem ich will eine dll schreiben, die wie folgt aussieht

#include <jpeg.hpp>
#include <vcl.h>

extern "C" __declspec(dllexport) int myfun(char * a, char * b){
 TJPEGImage *tjp = new TJPEGImage();
Graphics::TBitmap * bmp = new Graphics::TBitmap();

bmp->LoadFromFile(a);
tjp->Assign(bmp);
tjp->Compress(); 
tjp->SaveToFile(b);
delete bmp;
delete tjp;

return 1;
 }

fehlermeldung:
[Linker Fatal Error] Fatal: Unable to open file 'GRAPHICS.OBJ'

[Todd]

//---------------------------------------------------------------------------

#include <vcl.h>
#include <jpeg.hpp>
#pragma hdrstop

extern "C" __declspec(dllexport) int myfun(char * a, char * b);

//---------------------------------------------------------------------------
//   Important note about DLL memory management when your DLL uses the
//   static version of the RunTime Library:
//
//   If your DLL exports any functions that pass String objects (or structs/
//   classes containing nested Strings) as parameter or function results,
//   you will need to add the library MEMMGR.LIB to both the DLL project and
//   any other projects that use the DLL.  You will also need to use MEMMGR.LIB
//   if any other projects which use the DLL will be performing new or delete
//   operations on any non-TObject-derived classes which are exported from the
//   DLL. Adding MEMMGR.LIB to your project will change the DLL and its calling
//   EXE's to use the BORLNDMM.DLL as their memory manager.  In these cases,
//   the file BORLNDMM.DLL should be deployed along with your DLL.
//
//   To avoid using BORLNDMM.DLL, pass string information using "char *" or
//   ShortString parameters.
//
//   If your DLL uses the dynamic version of the RTL, you do not need to
//   explicitly add MEMMGR.LIB as this will be done implicitly for you
//---------------------------------------------------------------------------

#pragma argsused
int WINAPI DllEntryPoint(HINSTANCE hinst, unsigned long reason, void* lpReserved)
{
        return 1;
}
//---------------------------------------------------------------------------
int myfun(char * a, char * b)
{
 TJPEGImage *tjp = new TJPEGImage();
 Graphics::TBitmap * bmp = new Graphics::TBitmap();

 bmp->LoadFromFile(a);
 tjp->Assign(bmp);
 tjp->Compress();
 tjp->SaveToFile(b);
 delete bmp;
 delete tjp;

 return 1;
}

Funktioniert es so?

Liebe Grüße Todd