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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Newsgroups: comp.lang.ada
Subject: Re: How to use a function in a procedure call?
Date: Fri, 30 Sep 2011 14:16:34 +0200
Organization: cbb software GmbH
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Date: 2011-09-30T14:16:34+02:00
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On Fri, 30 Sep 2011 03:41:30 -0700 (PDT), Sunny wrote:

> I want so set a icon to my frame. Use GtkAda. But when I use the
> Set_Icon_From_File(win,"icon.jpg");
> An Error said that "can not use function 'Set_Icon_From_File' in a
> procedure call"
> How to solve the problem? Thanks!

By using the result returned by the function.
 
> My source code is:
> WITH Gtk.Window;USE Gtk.Window;
> WITH Gtk.Main;USE Gtk.Main;
> WITH Gtk.Enums;USE Gtk.Enums;
> 
> PROCEDURE  icon  IS
>    win:gtk_window;
> 
> BEGIN
>    Init;
>    Gtk_new(win);
>    Set_Size_Request(win,300,200);
>    Set_Icon_From_File(win,"icon.jpg");

if not Set_Icon_From_File(win,"icon.jpg") then
   null; -- Or set the default icon instead
end if;

-- 
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de