MFC使用CFileStdio类方法实现文件的copy

void CtestDlg::CopyAnyFile()
{
	CStdioFile readfilestream;
	CStdioFile writefilestream;
	int flag;

	flag = readfilestream.Open("D://1.zip",  CFile::modeRead|CFile::typeBinary);
	if (flag == 0)
	{
		MessageBox("读文件失败！");
		return;
	}
	//获取文件总长度：
	unsigned long long int filelength = readfilestream.GetLength();

	char *FilePacket = new char[filelength + 1];
	readfilestream.Read(FilePacket, filelength);
	readfilestream.Close();


	flag = writefilestream.Open("D://1//1.txt",  CFile::modeWrite|CFile::modeCreate | CFile::typeBinary);
	if (flag == 0)
	{
		MessageBox("创建文件失败！");
		return;
	}
	writefilestream.Write(FilePacket, filelength);
	writefilestream.Close();
	delete[] FilePacket;

	MessageBox("Copy Over");

}

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