CreateProcess子进程管道输出重定向

这里时子进程的输出重客向到一个一个文件中，适用于子进程为控制台输出的程序。

    SYSTEMTIME sys;
    GetLocalTime(&sys);

    SECURITY_ATTRIBUTES sa = { sizeof(SECURITY_ATTRIBUTES),NULL,TRUE };

    char name[512] = { 0 };
    sprintf_s(name, 512, "%4d-%02d-%02d %02d_%02d_%02d_%03d.txt", sys.wYear, sys.wMonth, sys.wDay, sys.wHour, sys.wMinute, sys.wSecond, sys.wMilliseconds);

    cmdOutput = CreateFileA(name,
        GENERIC_WRITE,
        FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
        &sa, OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);


    if (cmdOutput == INVALID_HANDLE_VALUE)
    {
        ExitProcess(0);
        return 0;
    }


    PROCESS_INFORMATION pi;
    STARTUPINFO si = { sizeof(STARTUPINFO) };

    si.hStdInput = 0;
    si.hStdOutput = cmdOutput;
    si.dwFlags = STARTF_USESTDHANDLES;

    if (CreateProcess(L"audio_recoder.exe", NULL, NULL, NULL, TRUE, NULL, NULL, NULL, &si, &pi))
    {
        WaitForSingleObject(pi.hProcess, INFINITE);
        CloseHandle(cmdOutput);
        CloseHandle(pi.hProcess);
        CloseHandle(pi.hThread);
    }