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Wireshark-dev: [Wireshark-dev] custom columns in dissector

From: "Andreas Schuler" <krater@xxxxxxxxxxxxxxxx>
Date: Wed, 9 Jun 2010 11:41:38 +0200 (CEST)
hi,

is my question too dumb, my english too bad or is there no one that can
help me ?

How can i display a user defined text in a custom column ?

greets
Andreas


>> On Tue, Jun 01, 2010 at 10:27:28PM +0200, Andreas Schuler wrote:
>>
>>> i'm writing a dissector and want to use custom columns for displaying
>>> some dynamic generated informations, but when i use
>>> proto_tree_add_none_format() the column remains empty although in the
>>> details the right values will be displayed. other proto_tree_add_...
>>> works but only show the value that comes direct from packet-data, no
>>> additional text etc.
>>
>> Are you sure that FT_NONE is the appropriate field type to be using for
>> that?  To quote README.developer, "No field type.  Used for fields that
>> aren't given a value, and that can only be tested for presence or
>> absence..." - so there wouldn't be anything to be displayed in the
>> custom column.  What are the dynamic values you are displaying?
>
>
> No, i'm not sure.
> I want to show a piece of the packet-header in human readable,sortable
> format.
>
> i.e.:
> Value   Column-Text
> 0	"[Ct]"
> 1	"[Ct]"
> 2	"[Nt]"
> 3	"[Nt]"
> 4	"[Qt]"
> 5	"[Escape]"
> 6	"[Mt]"
> 7	"[Mt]"
>
> Thats shouldn't be difficult, but the value 7 is dependant on the packet
> type either "[Mt]" or "[Pt]". So i can't use the normal
> proto_tree_add_item and value_string contruct.
>
> The background is, i want to clean some things in the DECT dissector
> (packet_dect.c). There are many things to do, one of them is that all
> infos from the packet only are written to COL_INFO since
> Revision 28022
> (http://anonsvn.wireshark.org/viewvc/trunk/epan/dissectors/packet-dect.c?r1=27904&r2=28022).
> Now i want to write this infos to custom columns, not to any random chosen
> COL_xxx fields like before.
>
> The upper described example is the first thing that be showed in the
> COL_INFO column and depends on
> dect.AField.head.TA and dect.type (or COL_PROTOCOL == DECT RFP/DECT PP).
>
>
> Andreas
>
>
>>
>> --
>> Steve
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>>
>
>