error LNK2001: unresolved external symbol _IID_IDirectDraw2

typedef int (__stdcall *DirectDrawCreateFunc)(GUID FAR* a ,LPDIRECTDRAW FAR* b, IUnknown FAR* c);

/* init_directx:
 *  Low-level DirectDraw initialization routine.
 */
int CDCUtils::init_directx(HWND allegro_wnd)
{
   LPDIRECTDRAW directdraw1;
   HRESULT hr;
   LPVOID temp;
   HINSTANCE ddraw = LoadLibrary("%WINDIR%\system32\ddraw.dll");
   if(ddraw== NULL)
   {
	   return -1;
   }
   _ddrawLib =ddraw;
DirectDrawCreateFunc ddFunc = (DirectDrawCreateFunc)GetProcAddress(ddraw,"DirectDrawCreate");
if(ddFunc)
{
 /* first we have to set up the DirectDraw1 interface... */
   hr = ddFunc(NULL, &directdraw1, NULL);
   if (FAILED(hr))
      return -1;
}

   ///* first we have to set up the DirectDraw1 interface... */
   //hr = DirectDrawCreate(NULL, &directdraw1, NULL);
   //if (FAILED(hr))
   //   return -1;

   //...then query the DirectDraw2 interface
   //This is the only place where IID_IDirectDraw2 is mentioned in entire solution
   hr=directdraw1->QueryInterface(IID_IDirectDraw2, &temp);
   if (FAILED(hr))
      return -1;

   _directdraw = (LPDIRECTDRAW2)temp;
   directdraw1->Release();

   /* set the default cooperation level */
   hr = IDirectDraw2_SetCooperativeLevel(_directdraw, allegro_wnd, DDSCL_NORMAL);
   if (FAILED(hr))
      return -1;

   /* get capabilities */
   _ddcaps.dwSize = sizeof(_ddcaps);
   hr = IDirectDraw2_GetCaps(_directdraw, &_ddcaps, NULL);
   if (FAILED(hr)) {
      TRACE("Can't get driver caps\n");
      return -1;
   }

   _dxHwnd=allegro_wnd;
  return 0;
}