CRect GameRect;//保存游戏窗口矩形用  if (theApp.m_hGameHand !=NULL)//这个需要自己去保存游戏窗口句柄我保存在theApp.m_hGameHand 里  {   ::ShowWindow(theApp.m_hGameHand,SW_SHOW);//把游戏显示出来   ::PostMessage(theApp.m_hGameHand,WM_SYSCOMMAND,SC_RESTORE,0);//防止游戏最小化，   Sleep(200);//防止游戏窗口未弹出      //让游戏窗口置顶   ::SetWindowPos(theApp.m_hGameHand,HWND_TOPMOST,0,0,0,0,SWP_NOSIZE|SWP_NOMOVE);   //获取游戏窗口的坐标   ::GetWindowRect(theApp.m_hGameHand,&GameRect);      //把游戏窗口移动到屏幕中间位置防止被覆盖窗体，被覆盖的DC是无法截取的   int x = ((GetSystemMetrics(SM_CXSCREEN)-GameRect.Width())/2);   int y = ((GetSystemMetrics(SM_CYSCREEN)-GameRect.Height())/2);   ::MoveWindow(theApp.m_hGameHand,x,y,GameRect.Width(),GameRect.Height(),TRUE);      //根据游戏窗口句柄获得游戏HDC   HDC hSr = ::GetDC(theApp.m_hGameHand);   //创建一个与游戏HDC兼容的HDC   HDC   hdc=::CreateCompatibleDC(hSr);     //创建一个与游戏HDC兼容的图位 大小为游戏窗口大小   HBITMAP   hbmp=::CreateCompatibleBitmap(hSr,GameRect.Width(),GameRect.Height());     ::SelectObject(hdc,(HGDIOBJ)hbmp);        //::StretchBlt(hdc,0,0,GameRect.Width(),GameRect.Height(),hSr,0,0,GameRect.Width(),GameRect.Height(),SRCCOPY);     ::BitBlt(hdc,0,0,GameRect.Width(),GameRect.Height(),hSr,0,0,SRCCOPY|SRCPAINT);     //保存成图片，这里可以改成发送图片数据到远程机器，   CBmp::SaveBmp(hbmp,"c:\\Test.bmp");//自己个bmp保存的函数好了,构建一个bmp文件头然后接上数据  ::ReleaseDC(theApp.m_hGameHand,hSr);   ::ReleaseDC(this->m_hWnd,hdc);   DeleteObject(hbmp);   ::DeleteDC(hSr);   ::DeleteDC(hdc);    //取消置顶窗口   ::SetWindowPos(theApp.m_hGameHand,HWND_TOPMOST,0,0,0,0,~SWP_NOSIZE|~SWP_NOMOVE);  }