Re: ADVAPI32: Implement GetServiceDisplayNameW

[Alexandre Julliard]

"Rolf Kalbermatter"  writes:
> - size = *lpcchBuffer * sizeof(WCHAR);
> - ret = RegGetValueW(hscm->hkey, lpServiceName, szDisplayName, RRF_RT_REG_SZ, &type, NULL, &size);
> - switch (ret)
> - {
> -
>    case ERROR_SUCCESS:
> -
>        ret = RegGetValueW(hscm->hkey, lpServiceName, szDisplayName, RRF_RT_REG_SZ, &type, lpDisplayName, &size);
> -
>        *lpcchBuffer = (size / sizeof(WCHAR)) - 1;
> -
>        break;

It would be better to put the data into the buffer right away, so that
you don't need two registry queries in the common case of the buffer
being large enough.