Resolve Windows device path to drive letter

typedef basic_string<TCHAR> tstring;
typedef map<tstring, tstring> HardDiskCollection;

void Initialise( HardDiskCollection &_hardDiskCollection )
{
    TCHAR tszLinkName[MAX_PATH] = { 0 };
    TCHAR tszDevName[MAX_PATH] = { 0 };
    TCHAR tcDrive = 0;

    _tcscpy_s( tszLinkName, MAX_PATH, _T("a:") );
    for ( tcDrive = _T('a'); tcDrive < _T('z'); ++tcDrive )
    {
        tszLinkName[0] = tcDrive;
        if ( QueryDosDevice( tszLinkName, tszDevName, MAX_PATH ) )
        {
            _hardDiskCollection.insert( pair<tstring, tstring>( tszLinkName, tszDevName ) );
        }
    }
}