VC获取窗口图片（截图）

最新推荐文章于 2022-03-07 13:50:05 发布

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最新推荐文章于 2022-03-07 13:50:05 发布

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分类专栏：界面 vc++ 文章标签：窗口图片截取

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//借鉴网上的文章：

HBITMAP CopyDCToBitmap(HDC hDC, LPRECT lpRect)
 {
  if(!hDC || !lpRect || IsRectEmpty(lpRect))
   return NULL;
  
  HDC hMemDC;  
  HBITMAP hBitmap, hOldBitmap;  
  int nX, nY, nX2, nY2;  
  int nWidth, nHeight; 
  
  nX = lpRect->left;
  nY = lpRect->top;
  nX2 = lpRect->right;
  nY2 = lpRect->bottom;
  nWidth = nX2 - nX;
  nHeight = nY2 - nY;
  
  hMemDC = CreateCompatibleDC(hDC);
  
  hBitmap = CreateCompatibleBitmap(hDC, nWidth, nHeight);
  
  hOldBitmap = (HBITMAP)SelectObject(hMemDC, hBitmap);
  
  StretchBlt(hMemDC, 0, 0, nWidth, nHeight, hDC, nX, nY, nWidth, nHeight, SRCCOPY);
  
  hBitmap = (HBITMAP)SelectObject(hMemDC, hOldBitmap); 
  
  DeleteDC(hMemDC);
  DeleteObject(hOldBitmap);
  
  
  return hBitmap;
 }