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Date: 2 May 93 16:41:39 GMT
From: cis.ohio-state.edu!zaphod.mps.ohio-state.edu!howland.reston.ans.net!darwi
n.sura.net!dtix.dt.navy.mil!cs.umd.edu!afterlife!blackbird.afit.af.mil!kmathias
@ucbvax.Berkeley.EDU  (Karl S Mathias)
Subject: Re: Motif Bindings
Message-ID: <kmathias.736360899@afit.af.mil>
List-Id: <comp.lang.ada>

dano@dogfish.boeing.com (Dan Olson) writes:

>Question 1: Are bindings available to build Motif interfaces?

>Question 2: How are callbacks done without pointer to functions
>            (assuming that bindings do exist)?


Answer to Question One:  Yes, there are bindings available.  The
STARS repository should have a copy of the Boeing bindings.  At 
AFIT we are using a commercial set of bindings that give full
X lib, Xt and Motif functionality.  The company that markets this set
of bindings is Systems Engineering Research Corporation.  The product
is called Ada/Motif.  There are other public domain and commercial
binding sets available beyond these.

Answer to Question Two:  Callbacks are registered by supplying the
address of the function.  

    Xt_Add_Callback( Target_Widget, Xm_N_activate_Callback,
		     Callback_Function'ADDRESS, Data'ADDRESS);

Note that the 'ADDRESS attribute does supply a pointer to the function.





Capt Karl Mathias                                  kmathias@afit.af.mil
Graduate Student, Air Force Institute of Technology
"Opinions expressed are my own and not those of the U.S. Air Force"