dpnet: Implement IDirectPlay8Address GetComponentByIndex (try 10)

[Stefan Dösinger]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Hi,

I'm sorry for the late review. I completely forgot about this patch
(also in the private mail you sent me).

It looks good to me, except one issue noted below that I missed earlier.

Am 2015-05-23 um 13:22 schrieb Alistair Leslie-Hughes:
> index 7e10136..bad84ef 100644
> --- a/dlls/dpnet/address.c
> +++ b/dlls/dpnet/address.c
> @@ -405,9 +405,58 @@ static HRESULT WINAPI IDirectPlay8AddressImpl_GetComponentByIndex(IDirectPlay8Ad
>          const DWORD dwComponentID, WCHAR *pwszName, DWORD *pdwNameLen, void *pvBuffer,
>          DWORD *pdwBufferSize, DWORD *pdwDataType)
>  {
> -  IDirectPlay8AddressImpl *This = impl_from_IDirectPlay8Address(iface);
> -  TRACE("(%p): stub\n", This);
> -  return DPN_OK; 
> +    IDirectPlay8AddressImpl *This = impl_from_IDirectPlay8Address(iface);
> +    struct component *entry;
> +    int namesize;
> +
> +    TRACE("(%p)->(%p %p %p %p)\n", This, pwszName, pvBuffer, pdwBufferSize, pdwDataType);
You're not tracing dwComponentID and pdwNameLen here. In particular
dwComponentID seems important, as it is the thing that the method call
retrieves.

> +    if(!pdwNameLen || !pdwBufferSize || !pdwDataType)
> +        return DPNERR_INVALIDPOINTER;
> +
> +    if(dwComponentID > This->comp_count)
> +        return DPNERR_DOESNOTEXIST;
As I've noted in other patches it would be a good idea to write a WARN
in error cases, especially in a COM method where +relay can't be used
to check return values. You can also print the available and required
size in case of DPNERR_BUFFERTOSMALL.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2
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=MUbC
-----END PGP SIGNATURE-----