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From: Jeffrey Carter <spam.jrcarter.not@spam.not.acm.org>
Newsgroups: comp.lang.ada
Subject: Re: How to use a function in a procedure call?
Date: Fri, 30 Sep 2011 12:13:44 -0700
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Date: 2011-09-30T12:13:44-07:00
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On 09/30/2011 03:41 AM, Sunny wrote:
> Hi all!
> 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"

As the msg indicates, Set_Icon_From_File is a function, not a procedure. While 
some languages allow you to silently discard a function result, Ada does not. So 
you must do something with the result of the function call, such as store it in 
a variable, pass it to another subprogram, or use it in an expression.

-- 
Jeff Carter
"I would never want to belong to any club that
would have someone like me for a member."
Annie Hall
41