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Newsgroups: comp.lang.ada
Date: Mon, 8 Feb 2016 15:39:49 -0800 (PST)
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Subject: Re: I do not understand this error...
From: John Smith <yoursurrogategod@gmail.com>
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Xref: news.eternal-september.org comp.lang.ada:29449
Date: 2016-02-08T15:39:49-08:00
List-Id: <comp.lang.ada>

On Sunday, February 7, 2016 at 11:41:51 PM UTC-5, Jeffrey R. Carter wrote:
> On 02/07/2016 08:51 PM, John Smith wrote:
> > 
> > Stupid question.  What do you mean by a library-level package?  Is this just
> > a regular package that has these callbacks declared and I just include it in
> > my application?
> 
> "Library-level" means not nested in anything else.
> 
> [Technically, nested directly in Standard, since all compilation units are
> considered nested directly in Standard. Standard is usually not mentioned
> explicitly, though, so this may be confusing to a beginner.]
> 
> -- 
> Jeff Carter
> "I'm a lumberjack and I'm OK."
> Monty Python's Flying Circus
> 54

How does that look like?

I tried to "with" the following package:
http://pastebin.com/ghd6kjZP

But I got the following errors:
$ gprbuild
using project file gtk_hello_world.gpr
gcc -c -g -gnatwa gtk_hello_world.adb
gtk_hello_world.adb:22:26: warning: formal parameter "Widget" is not referenced
gtk_hello_world.adb:28:22: warning: formal parameter "Widget" is not referenced
gtk_hello_world.adb:38:03: "Return_Handlers" is not visible
gtk_hello_world.adb:38:03: non-visible declaration at handler_package.ads:11
gtk_hello_world.adb:39:03: "Handlers" is not visible
gtk_hello_world.adb:39:03: non-visible declaration at handler_package.ads:10
gtk_hello_world.adb:39:03: non-visible declaration at gtk-handlers.ads:181
gprbuild: *** compilation phase failed