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Date: 24 Feb 91 21:18:11 GMT
From: eru!hagbard!sunic!enea!sommar@bloom-beacon.mit.edu  (Erland Sommarskog)
Subject: procedural variables
Message-ID: <2683@enea.se>
List-Id: <comp.lang.ada>

Also sprach Stephen Edwards <edwards@cis.ohio-state.edu>:
>This isn't quite correct.  Ironically, procedure _variables_ (in Ada)
>aren't even needed for X callbacks, as virtually all Ada-to-C X interfaces
>illustrate.  One only need pass an indirect reference to an Ada procedure
>on to the C code.  For this purpose, there isn't need of Ada-manipulable
>procedure variables.  (this would not be true when interfacing to an all
>Ada implementation of X, of course.)

...or you wanted an interface package with declarations that
assured that you passed callbacks with the right parameter
profile.
-- 
Erland Sommarskog - ENEA Data, Stockholm - sommar@enea.se