bitmap.h

简单画图

// WriteDIB - Writes a DIB to file
// Returns - TRUE on success
// szFile - Name of file to write to
// hDIB - Handle of the DIB
BOOL WriteDIB( LPTSTR szFile, HANDLE hDIB)
{
	BITMAPFILEHEADER hdr;
	LPBITMAPINFOHEADER lpbi;

	if (!hDIB)
		return FALSE;

	CFile file;
	if( !file.Open( szFile, CFile::modeWrite|CFile::modeCreate) )
		return FALSE;

	lpbi = (LPBITMAPINFOHEADER)hDIB;

	int nColors = 1 << lpbi->biBitCount;

	// Fill in the fields of the file header
	hdr.bfType = ((WORD) ('M' << 8) | 'B'); // is always "BM"
	hdr.bfSize=GlobalSize (hDIB) + sizeof( hdr ); 
	hdr.bfReserved1 = 0;
	hdr.bfReserved2 = 0;
	hdr.bfOffBits = (DWORD)(sizeof( hdr ) + lpbi->biSize +
		nColors * sizeof(RGBQUAD));

	// Write the file header
	file.Write( &hdr, sizeof(hdr) );

	// Write the DIB header and the bits
	file.Write( lpbi, GlobalSize(hDIB) );

	return TRUE;
}