While there have been many changes since Ethereal, the use of etype_vals and ethertype are not among them. They are both declared in epan/dissectors/packet-ethertype.c and several other dissectors reference them with no problems, so there is another reason why Wang Jing encountered problems. I made some quick changes to your dissectors to eliminate the warnings and it compiles and links just fine.
By the way, I suggest (re-)reading README.developer and the related README files in the doc/ directory if you want to know more about Wireshark specifics.
> -----Original Message-----
> From: wireshark-dev-bounces@xxxxxxxxxxxxx [mailto:wireshark-dev-
> bounces@xxxxxxxxxxxxx] On Behalf Of Breno Jacinto
> Sent: Monday, October 20, 2008 8:19 AM
> To: Developer support list for Wireshark
> Subject: Re: [Wireshark-dev] Installing a new dissector
>
> Hello,
>
> 2008/10/19 WangJing <wj.vivian@xxxxxxxxx>:
> >
> > I fix this kind of error, and compile. But I still got the following
> error.
> > I think the code is used for Ethereal,
> > and the code is not compliant to Wireshark version..
>
> Yes, exactly, that is what I was suspecting from the beginning. The
> code was written for ethereal, so, there were changes in wireshark
> that made it incompatible somehow? Is there any documentation on what
> has changed and how to make Ethereal dissectors run on Wireshark?
>
>
>
> >
> > link -dll /out:adh.dll /NOLOGO /INCREMENTAL:no /MACHINE:I386
> /DEBUG
> > pack
> > et-adh.obj packet-adhctl.obj packet-adholsr.obj plugin.obj
> > ..\..\epan\libwiresh
> > ark.lib C:\wireshark-win32-libs\glib\lib\glib-2.0.lib
> > C:\wireshark-win32-libs\
> > glib\lib\gmodule-2.0.lib C:\wireshark-win32-libs\glib\lib\gobject-
> 2.0.lib
> > adh.r
> > es
> > Creating library adh.lib and object adh.exp
> > packet-adh.obj : error LNK2001: unresolved external symbol _etype_vals
> > packet-adh.obj : error LNK2019: unresolved external symbol _ethertype
> > referenced
> > in function _dissect_adh
> > adh.dll : fatal error LNK1120: 2 unresolved externals
> > NMAKE : fatal error U1077: 'link' : return code '0x460'
> > Stop.
> >
>
>
>
> Best regards,
>
> --
> --
> :: Breno Jacinto ::
> :: breno - at - gprt.ufpe.br ::
> :: FingerPrint ::
> 2F15 8A61 F566 E442 8581
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> :: Persistir no difícil é a única maneira de torná-lo fácil algum dia. ::
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