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From: "Jeffrey R. Carter" <spam.jrcarter.not@spam.not.acm.org>
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Subject: Re: GtkAda on macOS Big Sur
Date: Sun, 22 Aug 2021 11:14:05 +0200
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On 8/21/21 6:11 PM, Gareth Baker wrote:
> 
> I took my versions of the compiler and XNAdaLib back to ones that I had working but got the same behaviour. The only difference being I am now on Big Sur.

It sounds as if the OS version changed something. You might want to consider a 
less OS-dependent GUI library, such as Ada GUI 
(https://github.com/jrcarter/Ada_GUI) or Gnoga 
(https://sourceforge.net/projects/gnoga/).

-- 
Jeff Carter
"Nobody expects the Spanish Inquisition!"
Monty Python's Flying Circus
22