瞧瞧这个将CBitmap写到Bmp文件里的函数

首先,这个函数只能针对24色的bitmap.

void CAppDlg::WriteBmp(CBitmap *PBitmap)

{

BITMAPINFO *m_pBMI;

BYTE *m_pDIBData;

BITMAPFILEHEADER bfh;

BITMAPINFOHEADER bi;

BITMAP BM;

PBitmap->GetObject(sizeof(BM),&BM);

CClientDC dc(this);

bi.biSize = sizeof(BITMAPINFOHEADER);

bi.biWidth = BM.bmWidth;

bi.biHeight = BM.bmHeight;

bi.biPlanes = 1;

bi.biBitCount = 24;

bi.biCompression = 0;

bi.biSizeImage = 0;

bi.biXPelsPerMeter = 0;

bi.biYPelsPerMeter = 0;

bi.biClrUsed = 0;

bi.biClrImportant = 0;

bfh.bfType=0x4d42;

bfh.bfOffBits=sizeof(bfh)+sizeof(BITMAPINFOHEADER);

bfh.bfSize=bfh.bfOffBits+BM.bmWidth*BM.bmHeight*3;

bfh.bfReserved1=0;

bfh.bfReserved2=0;

m_pBMI=(BITMAPINFO*)new char[sizeof(BITMAPINFO)];

m_pDIBData=(BYTE*)new char[bfh.bfSize-bfh.bfOffBits];

memcpy(m_pBMI,&bi,sizeof(BITMAPINFOHEADER));

GetDIBits(dc.GetSafeHdc(), (HBITMAP)PBitmap->GetSafeHandle(), 0l, (DWORD)bi.biHeight,

(LPVOID)m_pDIBData,(LPBITMAPINFO)m_pBMI, (DWORD)DIB_RGB_COLORS);

CFile file;

if(!file.Open(m_FileName,CFile::modeCreate|CFile::modeWrite))

{

MessageBox("error!");

return;

}

file.Write(&bfh,sizeof(bfh));

file.Write(m_pBMI,sizeof(BITMAPINFOHEADER));

file.Write(m_pDIBData,BM.bmWidth*BM.bmHeight*3);

file.Close();

delete m_pBMI;

delete m_pDIBData;

}

其实横简单吧！在本站的GetPicture软件中有源代码.