如何将窗口客户区的内容保存成一个BMP文件？要求不用MFC，用Windows API

[fat_how]

谢谢了

[CUG122032]

CClinetDC dc(this);
LPSTR lpData = (LPSTR)GlobalAllocPtr(GPTR, size);
GetDIBits(dc,Bitmap,0,bih.biHeight,lpData,(BITMAPINFO*)&bih,DIB_RGB_COLORS);

bf.WriteHuge(&bfh, sizeof(BITMAPFILEHEADER));
bf.WriteHuge(&bih, sizeof(BITMAPINFOHEADER));
bf.WriteHuge(lpData, size);
bf.Close();

不知道这样算不算是用了MFC...

[soaroc]

出自《精通VisualC++图像处理编程》
HBITMAP CopyScreenToBitmap(LPRECT lpRect)
{
HDC hScrDC, hMemDC; // screen DC and memory DC
HBITMAP hBitmap, hOldBitmap; // handles to deice-dependent bitmaps
int nX, nY, nX2, nY2; // coordinates of rectangle to grab
int nWidth, nHeight; // DIB width and height
int xScrn, yScrn; // screen resolution

// check for an empty rectangle

if (IsRectEmpty(lpRect))
return NULL;

// create a DC for the screen and create
// a memory DC compatible to screen DC

hScrDC = CreateDC("DISPLAY", NULL, NULL, NULL);
hMemDC = CreateCompatibleDC(hScrDC);

// get points of rectangle to grab

nX = lpRect->left;
nY = lpRect->top;
nX2 = lpRect->right;
nY2 = lpRect->bottom;

// get screen resolution

xScrn = GetDeviceCaps(hScrDC, HORZRES);
yScrn = GetDeviceCaps(hScrDC, VERTRES);

//make sure bitmap rectangle is visible

if (nX < 0)
nX = 0;
if (nY < 0)
nY = 0;
if (nX2 > xScrn)
nX2 = xScrn;
if (nY2 > yScrn)
nY2 = yScrn;

nWidth = nX2 - nX;
nHeight = nY2 - nY;

// create a bitmap compatible with the screen DC
hBitmap = CreateCompatibleBitmap(hScrDC, nWidth, nHeight);

// select new bitmap into memory DC
hOldBitmap = (HBITMAP)SelectObject(hMemDC, hBitmap);

// bitblt screen DC to memory DC
BitBlt(hMemDC, 0, 0, nWidth, nHeight, hScrDC, nX, nY, SRCCOPY);

// select old bitmap back into memory DC and get handle to
// bitmap of the screen

hBitmap = (HBITMAP)SelectObject(hMemDC, hOldBitmap);

// clean up

DeleteDC(hScrDC);
DeleteDC(hMemDC);

// return handle to the bitmap

return hBitmap;
}