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From: basti@orthogo.UUCP (Sebastian Wangnick)
Newsgroups: comp.windows.x.motif
Subject: Re: C++ interface to Motif 1 of 2 (long)
Message-ID: <824@orthogo.UUCP>
Date: 23 Nov 90 09:22:51 GMT
References: <901117000115.9011@alphalpha> <9011191652.AA01032@dolphin.aet_austin>
Distribution: inet
Organization: none
Lines: 38

ctim@dolphin.aaet.ti.com (Craig Timmerman) writes:

>> > instance.  This way you can keep the code for the callbacks in C++ and
>> > never have to worry about referencing widgets.  This is a big
>> But it must produce a dummy callback routine no?  Or does it
>> just assume it knows the C++ calling conventions?  Or does it have
>> one callback for each signature, which then converts to object and
>> calls the C++ callback?
>I should have been more explicit here.  The macros you use to define
>the callbacks do create normal Xt callbacks.  The macros actually just
>define the first three/four lines of the callback (the callback
>definition, opening brace, do the widget->object hash table look up).
>You provide the rest of the callback code including the terminating
>brace.

As all of you seen to write those wrappers, here's my DM 0,02 worth
of approach: Use static member functions as callbacks. They are C-callable
plus you don't need extra friends.

Sebastian Wangnick (basti@orthogo.uucp)

PS: inews hack
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