BOOL CopyCString strSource, CString strTarget
{
	CFile fSource, fTarget;
	char	c[4096];     //4kֽڵĻ
	int	nCount;  
	//ļ
	if  !fSource.OpenstrSource, CFile::modeRead
	{
		MessageBoxOpen Source File Fail!;
		return  false;
	}
	if  !fTarget.OpenstrTarget, CFile::modeCreate | CFile::modeWrite
	{
		MessageBoxCreate Target File Fail!;
		fSource.Close;
		return  false;
	}
	//ļc
	nCount = fSource.Readc, 4096;
	while nCount
	{
		fTarget.Writec, nCount;
		nCount = fSource.Readc, 4096;
	}
	fSource.Close;
}
fTarget.Close;
return  true;
}
