Thread: load gif into program

That's probably because GDI+ is a C++ only. Why they've done that I don't know, but either way it'll never work in your C file.

The cheaters' way to do it is:-

Code:

LPPICTURE LoadPicture(char *szFilename)
{
   LPPICTURE lpPicture;

   // This is an OLE function, filename must be in Unicode
#ifndef UNICODE
   unsigned short wzFilename[MAX_PATH];
   MultiByteToWideChar(GetACP(), MB_PRECOMPOSED, szFilename, -1, wzFilename, MAX_PATH);
#else
   char *wzFilename;
   wzFilename = szFilename;
#endif
   if (OleLoadPicturePath(wzFilename, NULL, 0, 0, &IID_IPicture, (void **)&lpPicture) != S_OK)
      return NULL;

   return lpPicture;
}

And when you want to show it on a DC:-

Code:

int iHiWidth, iHiHeight; // gives you size in HIMETRICs
BITMAP bmp; // pixel size in here
HBITMAP hbmp;

lpPicture->lpVtbl->get_Width(lpPicture, &iHiWidth);
lpPicture->lpVtbl->get_Height(lpPicture, &iHiHeight);
lpPicture->lpVtbl->get_Handle(lpPicture, (OLE_HANDLE *)&hbmp);
GetObject(hbmp, sizeof(BITMAP), &bmp);
lpPicture->lpVtbl->Render(lpPicture, hdc, 0, 0, bmp.bmWidth, bmp.bmHeight, 0, iHiHeight, iHiWidth, -iHiHeight, NULL);

When you're finished with it, remember to:-

Code:

lpPicture->lpVtbl->Release(lpPicture);

Depending on which version of Windows is being used, you may also need to call CoInitialize().