c++ - GetComputerName() not displaying Unicode correctly in Windows console

Question

I'm relatively new to WinAPI programming in C++. I'm trying to write a program that will obtain the system hostname using GetComputerName(). Ideally, I want the code to be able to work on English and non-English systems. Below is the code that I'm using:

int main()
{
    wstring hostname;
    wchar_t nbtName[MAX_COMPUTERNAME_LENGTH + 1];
    DWORD length = MAX_COMPUTERNAME_LENGTH + 1;
    GetComputerName(nbtName, &length);
    hostname = nbtName;

    wcout << hostname << endl;

    return 0;
}

The code works fine on my English Windows 7 system, but the code doesn't seem to display properly on my German Windows 7 system (which uses German characters for the hostname). I thought that wstring and wchar_t could handle these special characters. Here's what's displayed on my German Windows 7 system.

COMPUTER-í─▄?

Am I overlooking something stupid? Thanks!

Answer 1

Use _setmode(_fileno(stdout), _O_U16TEXT) to show Unicode in console window:

#include <iostream>
#include <string>
#include <io.h> //for _setmode
#include <fcntl.h> //for _O_U16TEXT

int main()
{
    _setmode(_fileno(stdout), _O_U16TEXT);
    std::wcout << L"ελληνικ?
";
    return 0;
}

Or use MessageBoxW(0, hostname.c_str(), 0, 0) or OutputDebugStringW to see Unicode text displayed correctly: