hOldTargetBitmap=(HBITMAP)SelectObject(hTargetDC,hTargetBitmap);

  SetStretchBltMode(hTargetDC,COLORONCOLOR); //设置模式

  //将源位图数据拷贝到目标区域

StretchBlt(hTargetDC,0,0,lpbmi->bmiHeader.biWidth,lpbmi->bmiHeader.biHeight,hSourceDC,0,0,lpSrcDIB->bmiHeader.biWidth,lpSrcDIB->bmiHeader.biHeight,SRCCOPY);

  SelectObject(hSourceDC,hOldSourceBitmap); //

  SelectObject(hTargetDC,hOldTargetBitmap);

   //释放资源

  DeleteDC(hSourceDC); //删除句柄

  DeleteDC(hTargetDC);

  ReleaseDC(NULL,hDC); //

  GdiFlush();

  memcpy(DisplayData,lpTargetBits,dwTargetBitsSize); //将lpTargetBits数据拷贝到显示单元

  DeleteObject(hTargetBitmap); //删除内存位图对象

  DeleteObject(hSourceBitmap);

  return true;

}