From: Daniel Sheppard <daniels@...>
Date: 2004-04-13T11:21:09+09:00
Subject: Re: FXRuby: overload FXSlider

You may also be able to overwrite the onUpdateCmd method - that's
probably the easiest approach.

> -----Original Message-----
> From: Daniel Sheppard 
> Sent: Tuesday, 13 April 2004 12:19 PM
> To: ruby-talk ML
> Subject: Re: FXRuby: overload FXSlider
> 
> 
> In regards to connect() and multiple handlers, have a look at 
> some recent email on the fxruby list. 
> 
> http://sourceforge.net/mailarchive/forum.php?thread_id=4142286
> &forum_id=
> 33510 
> http://sourceforge.net/mailarchive/forum.php?thread_id=4197535
&forum_id=
33510

What you'll probably want to do is connect to SEL_UPDATE and modify the
background color there. If you want to make sure that SEL_UPDATE is left
available for use elsewhere, overwrite the connect method so that it
combines your colour changing with whatever is passed for SEL_UPDATE.

def connect(messageType, callableObject=nil, &block) 
  if messageType == SEL_UPDATE
    callableObject = block if not callableObject
    super(messageType) { |a,b,c|
      callableObject.call (a,b,c)
      changeBackgroundColor()
    }
  else
    super(messageType, callableObject, block)
  end
end

(above code may be bugridden)

> -----Original Message-----
> From: Martin [mailto:martinankerl@web.de]
> Sent: Tuesday, 13 April 2004 7:19 AM
> To: ruby-talk ML
> Subject: FXRuby: overload FXSlider
> 
> 
> Hi all,
> 
> I want to create a custom control which changes the
> background color of the slider whenever an update happens. 
> What's the best way to do this? The control should behave 
> exactly like FXSilder, so I can not use connect(). And while 
> I am at it: why doesn't connect() support multiple message handlers?
> 
> regards,
> Martin
> 
> 
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