open console & redirect there

Console.cpp

#define WIN32_LEAN_AND_MEAN
#include <Windows.h>
#include <cstdio>
#include <fcntl.h>
#include <io.h>
#include <streambuf>

void RedirectHandle(DWORD handle, FILE* file, char const* mode)
{
    long lStdHandle = (long)GetStdHandle(handle);
    int hConHandle = _open_osfhandle(lStdHandle, _O_TEXT);

    *file = *_fdopen(hConHandle, mode);

    setvbuf(file, NULL, _IONBF, 0);
}

void CreateConsole()
{
    // allocate a console for this app
    AllocConsole();

    // set the screen buffer to be big enough to let us scroll text
    CONSOLE_SCREEN_BUFFER_INFO coninfo;
    GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE), &coninfo);
    coninfo.dwSize.Y = 300;
    SetConsoleScreenBufferSize(GetStdHandle(STD_OUTPUT_HANDLE), coninfo.dwSize);

    // redirect unbuffered STDOUT to the console
    RedirectHandle(STD_OUTPUT_HANDLE, stdout, "w");
    RedirectHandle(STD_INPUT_HANDLE, stdin, "r");
    RedirectHandle(STD_ERROR_HANDLE, stderr, "w");

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