IJL을 이용해서 JPEG 이미지를 디코딩해서 나온 Bitmap이미지를 아래와 같이 그리려고 하는데
화면에 아무런 변화가 없네요..
아래의 코드에 문제가 있으면 지적해 주세요.. 어디서 문제인 지.. .?? 오리무중... .
repaint or redraw에 문제가 있는 것은 아닌 지 궁금하군요..
감사..

------------------------------------------------------------------------------------------------

if (m_JpgDec.Decoding(GetStream(), GetStreamSize())) {
    HDC dc = ::GetWindowDC(Form_Main->Image_Picture); // TImage로 선언된 객체
    SBMP * pBmp = m_JpgDec.GetResultBmp();
    //Form_Main->Image_Picture->Picture->Bitmap->Assign(pBmp);
    result = ::StretchDIBits(
               dc,                        // device context
               x,                         // x-coordinate of upper-left corner of dest. rect.
               y,                         // y-coordinate of upper-left corner of dest. rect.
               320,                       // width of destination rectangle
               240,                       // height of destination rectangle
               0,                         // x-coordinate of upper-left corner of source rect.
               0,                         // y-coordinate of upper-left corner of source rect.
               m_JpgDec.GetImageWidth(),  // width of source rectangle
               m_JpgDec.GetImageHeight(), // height of source rectangle
               pBmp->bitstream,                // address of bitmap bits
               (BITMAPINFO *)&pBmp->header,    // address of bitmap data
               DIB_RGB_COLORS,                 // usage
               SRCCOPY);                       // raster operation code

    ReleaseDC(Form_Main->Image_Picture, dc);
}

result 값이 0이 나오느데...어떻게 해야 할 지?