缥缈峰

void DrawImage(HDC hdc, const WCHAR * filename)
{
   IImagingFactory *pImgFactory = NULL;
   IImage *pImage = NULL;
   RECT rc;

   CoInitializeEx(NULL, COINIT_MULTITHREADED);

   if (SUCCEEDED(CoCreateInstance(CLSID_ImagingFactory,
                                  NULL,
                                  CLSCTX_INPROC_SERVER,
                                  IID_IImagingFactory,
                                  (void **) &pImgFactory))) {
       if (SUCCEEDED(pImgFactory->CreateImageFromFile(filename, &pImage))) {
           pImage->Draw(hdc, &rc, NULL);
           pImage->Release();
       }

       pImgFactory->Release();
   }
   CoUninitialize();
}

void DrawImage(HDC hdc, const VOID * buf, UINT size)
{
   IImagingFactory *pImgFactory = NULL;
   IImage *pImage = NULL;
   RECT rc;

   CoInitializeEx(NULL, COINIT_MULTITHREADED);

   if (SUCCEEDED(CoCreateInstance(CLSID_ImagingFactory,
                                  NULL,
                                  CLSCTX_INPROC_SERVER,
                                  IID_IImagingFactory,
                                  (void **) &pImgFactory))) {
       if (SUCCEEDED
           (pImgFactory->
            CreateImageFromBuffer(buf, size, DISPOSAL_NONE, &pImage))) {
           pImage->Draw(hdc, &rc, NULL);
           pImage->Release();
       }

       pImgFactory->Release();
   }
   CoUninitialize();
}

ImageInfo imageInfo;
pImage->GetImageInfo(&imageInfo);