SV*
GetTextHelper(HWND hwnd, int index, UINT lenmsg, UINT textmsg)
{
    SV* sv = 0;
    int len = SendMessage(hwnd, lenmsg, index, 0L);
    char* text = (char*)safemalloc(len+1);
    if (text != 0) {
        SendMessage(hwnd, textmsg, index, (LPARAM)text);
        sv = newSVpv(text, len);
        safefree(text);       
    }
    return sv;
}