图片混合

 图片混合 高手勿看

 CBitmap bmp1;
  bmp1.LoadBitmap(IDB_BITMAP1);

  CDC dcMemory1;
  dcMemory1.CreateCompatibleDC(&dc);
  dcMemory1.SelectObject(&bmp1);
 
  //dc.SetStretchBltMode(0);
  dc.BitBlt(0,0,640,480,&dcMemory1,0,0,SRCCOPY);

  CBitmap FootballBMP;
  FootballBMP.LoadBitmap(IDB_BITMAP4);
  CDC ImageDC;
  ImageDC.CreateCompatibleDC(&dc);
  CBitmap *pOldImageBMP = ImageDC.SelectObject(&FootballBMP);
  TransparentBlt(dc.GetSafeHdc(), 0, 0, 640,480, ImageDC.GetSafeHdc(), 0, 0, 640,480, RGB(0,255,0));
  ImageDC.SelectObject(pOldImageBMP);