请问怎样把当前屏幕截取下来,并保存为BMP到硬盘上.(请详细点,给高分)

[yy23rock]

[cofan]

BOOL SaveToBitmap(HDC hDC,int nBPC,int x,int y,int nWidth,int nHeight)
{

HDC memDC;
char szBmp[sizeof(BITMAPINFOHEADER)+sizeof(RGBQUAD)*256];
BYTE *lpvBits;
HGDIOBJ hOld=NULL;
BITMAPINFO *pBmp=(BITMAPINFO*)szBmp;
BITMAPINFOHEADER &bi=pBmp->bmiHeader;
BITMAP bm;
HBITMAP hBitmap;
int nPal = sizeof(RGBQUAD)*(nBPC<=8?2<<(nBPC-1):0);

if (!hDC)
return FALSE;
if ((memDC = CreateCompatibleDC(hDC))==NULL)
return FALSE;
if ((hBitmap = CreateCompatibleBitmap(hDC,nWidth,nHeight))==NULL)
{
DeleteDC(memDC);
return FALSE;
}
hOld = SelectObject(memDC,hBitmap);

BitBlt(memDC,0,0,nWidth,nHeight,hDC,x,y,SRCCOPY);

GetObject(hBitmap,sizeof(BITMAP),&bm);

memset(&bi,0,sizeof(BITMAPINFOHEADER));
bi.biSize = sizeof(BITMAPINFOHEADER);

bi.biHeight = bm.bmHeight;
bi.biWidth = bm.bmWidth;
bi.biPlanes = 1;
bi.biClrUsed = 0;
bi.biXPelsPerMeter = 96;
bi.biYPelsPerMeter = 96;
bi.biCompression = BI_RGB;
bi.biBitCount = nBPC;

GetDIBits(hDC,g_hBitmap,0,bm.bmHeight,NULL,pBmp,DIB_RGB_COLORS);

lpvBits = new BYTE[pBmp->bmiHeader.biSizeImage+128];
GetDIBits(hDC,hBitmap,0,bm.bmHeight,lpvBits,pBmp,DIB_RGB_COLORS);

SelectObject(memDC,hOld);
DeleteDC(memDC);

#ifdef _savebitmap
BITMAPFILEHEADER bmfHeader;
bmfHeader.bfType = 0x4d42;
bmfHeader.bfOffBits = sizeof(BITMAPFILEHEADER) + sizeof(BITMAPINFOHEADER)+nPal;
bmfHeader.bfReserved1 = 0;
bmfHeader.bfReserved2 = 0;
bmfHeader.bfSize = sizeof(BITMAPFILEHEADER) + pBmp->bmiHeader.biSizeImage+nPal;
CFile bmpFile;
bmpFile.Open("D:\\test.bmp",CFile::modeCreate|CFile::modeWrite);
bmpFile.WriteHuge(&bmfHeader,sizeof(bmfHeader));
bmpFile.WriteHuge(pBmp,sizeof(BITMAPINFOHEADER)+nPal);
bmpFile.WriteHuge(lpvBits,pBmp->bmiHeader.biSizeImage);
bmpFile.Close();
#endif
return TRUE;
}

[coolxiao]

留下email，给你一个完整的例子

[robter_x]

to coolxiao:
也给我把！

[beegee]

我也要，Thank you!
[e-mail]

[jiagh]

我也要：
my email :
[e-mail]

[jiagh]

我也要：
my email :
[e-mail]

[黑白双傻]

我也要。谢了
[e-mail]

[swordbroken]

谢谢,我也要
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[tsinghao]

谢先,我也要
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[yhjlucy]

谢谢,我也要
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