From: Pierre Baillet <oct@...>
Date: 2003-01-07T08:05:19+09:00
Subject: Re: [BUG][FOX] iconlist and multiple icon usage

Hello again,

I worked like a charm, thanks a lot for your help, Lyle !

On Tue, Jan 07, 2003, Lyle Johnson wrote:
> 
> The problem is that you're trying to use an icon before its server-side 
> representation has been created. For more information about this issue, 
> see this entry from the FOX FAQ:
> 
>     http://www.fox-toolkit.org/faq.html#ILLEGALICON
> 
> The quick fix for your program is to just add the line:
> 
>     icon.create
> 
> immediately after the line in Foo#redraw_list that instantiates the new 
> FXPNGIcon, i.e.
> 
>     def redraw_list
>       @iconlist.clearItems
>       # display empty boxes
>       icon = FXPNGIcon.new(getApp(), @@folder_data)
>       icon.create
>       (1..3).each{ |f|
>         item = FXIconItem.new(f.to_s, icon )
>         @iconlist.appendItem(item)
>       }
>     end
> 
> >Apart from reinstancing an icon every time, is there a solution to have
> >icons used more than once on with FOX?
> 
> As a matter of fact you only need *one* copy of this icon object, and 
> can share it amongst all of the list items. If I were to modify your 
> example program, it would look like this:
> 
>     class Foo < FXMainWindow
>     [ ...>8... snip ...8<... ]
> 
> Apart from moving the app-related stuff out of your main window class, 
> the important thing to note is that there is only *one* icon object 
> (@folder_icon) that is shared by all of the list items. It gets created 
> when the main window (Foo) object is created (see Foo#create).
> 

-- 
Pierre Baillet
Il faut pomper pour vivre et donc vivre pour pomper.
Devise Shadok