使用GetLogicalDriveStrings

 

void CDialogDlg::GetLogicalDrives()
{
    //get the length of drive strings not include the last terminating null character
    int nBufferLength = GetLogicalDriveStrings(0, NULL);

    //the size must plus the last terminating null character
    TCHAR* pBuffer = new TCHAR[nBufferLength + 1];

    //Get the actually DriveStrings
    GetLogicalDriveStrings(nBufferLength, pBuffer);

    TCHAR* pBegin = pBuffer;
    size_t nLength = _tcslen(pBuffer);

    while(nLength > 0)
    {
        TRACE(_T("%s\n"), pBuffer);
        pBuffer += nLength + 1;
        nLength = _tcslen(pBuffer);
    }

    delete [] pBegin;
    pBegin = NULL;
}

//Output:
//C:\
//D:\
//E:\
//F:\
//G:\
//H:\