Piping console output from WinMain when running from a console

I'm trying to pipe standard output from a WinMain function i a VCL forms application, from a console.

In particular, I need to do this in a console:

mywinprogram.exe -v > toMyFile.txt 

where the -v stands for version. The information passed on is simply the version of the application.

I'm able to get the output to the console using the answer here: How do I get console output in C++ with a Windows program?

but piping the output to a file don't work.

When started without any arguments, the application should behave like a 'normal' windows application.

The ability to get the information this way is for the workings of an automated build system.

This is a version of what I found in Sev's answer.

Call this function the first thing you do in. _tWinMain():

#include <cstdio>
#include <fcntl.h>
#include <io.h>

void RedirectIOToConsole() {
    if (AttachConsole(ATTACH_PARENT_PROCESS)==false) return;

    HANDLE ConsoleOutput = GetStdHandle(STD_OUTPUT_HANDLE);
    int SystemOutput = _open_osfhandle(intptr_t(ConsoleOutput), _O_TEXT);

    // check if output is a console and not redirected to a file
    if(isatty(SystemOutput)==false) return; // return if it's not a TTY

    FILE *COutputHandle = _fdopen(SystemOutput, "w");

    // Get STDERR handle
    HANDLE ConsoleError = GetStdHandle(STD_ERROR_HANDLE);
    int SystemError = _open_osfhandle(intptr_t(ConsoleError), _O_TEXT);
    FILE *CErrorHandle = _fdopen(SystemError, "w");

    // Get STDIN handle
    HANDLE ConsoleInput = GetStdHandle(STD_INPUT_HANDLE);
    int SystemInput = _open_osfhandle(intptr_t(ConsoleInput), _O_TEXT);
    FILE *CInputHandle = _fdopen(SystemInput, "r");

    //make cout, wcout, cin, wcin, wcerr, cerr, wclog and clog point to console as well
    ios::sync_with_stdio(true);

    // Redirect the CRT standard input, output, and error handles to the console
    freopen_s(&CInputHandle, "CONIN$", "r", stdin);
    freopen_s(&COutputHandle, "CONOUT$", "w", stdout);
    freopen_s(&CErrorHandle, "CONOUT$", "w", stderr);

    //Clear the error state for each of the C++ standard stream objects.
    std::wcout.clear();
    std::cout.clear();
    std::wcerr.clear();
    std::cerr.clear();
    std::wcin.clear();
    std::cin.clear();
}