Hi,
That doesn�t seem to work.
In the dissect_zigbee I read the 4 Bit and calculate them to an offset value.
This value I use in:
proto_tree_add_item(adr_tree, hf_zigbee_adr_dest,tvb,5, dest_offset, FALSE);
So the added Item should have the correct length.(dest_offset = 0 / 2 / 8)
In the hf_register_info I use:
{ &hf_zigbee_adr_dest,
{ "Destination Address", "zigbee.adr.dest",
FT_UINT64, BASE_HEX, NULL, 0x0,
"", HFILL }
So at the Moment the field is either 8 Byte length (UINT64) or not existing, if the switch/Case in the dissect_zigbee detects 00 as Adressing Mode.(At least the hiding of the field when not used works)
I tried to use FT_BYTES instead of the FT_UINT64 but the length is still the same.
Regards
Jan
-------- Original-Nachricht --------
Datum: Mon, 22 Jan 2007 16:22:12 +0100 (CET)
Von: Jaap Keuter <jaap.keuter@xxxxxxxxx>
An: Developer support list for Wireshark <wireshark-dev@xxxxxxxxxxxxx>
Betreff: Re: [Wireshark-dev] How to modify hf_register_info hf[] ?
> Hi,
>
> There's no way to change a registered array. Therefore I suggested to use
> FT_BYTES, which has a variable length given in the proto_tree_add_*
> function.
>
> Thanx,
> Jaap
>
> On Mon, 22 Jan 2007, Jan Kokott wrote:
>
> > Hi,
> >
> > I have a little problem with the hf [] array.
> > In the subtree "frame" are two fields defining the length of my subtree
> "Adressing Field".
> >
> > The Field could varry between 4 and 20 byte. The total length is a
> problem I have already solved. My problem is, that 2 of the 4 fields in those
> 4-20 byte have a variable length(0,2 or 8 Byte).
> >
> > The dissector (if (tree)) was solved with an switch/case, for every
> possibility.
> > But how do I change the hf [], so that it could have 2 or 4 fields with
> 0-8 Byte ?
> > I could use a switch/case again but therefore I would need to write 6
> different hf_register with 14-16 entrys.
> >
> > Any ideas on how I could do that a bit smoother ?
> >
> > Regards
> > Jan Kokott
> >
>
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