[Fxruby-users] Re: How to catch window destruction (was: Question...)

[Lyle J. <ly...@kn...>]

On Feb 26, 2004, at 7:46 AM, Allen Mitchell wrote:

> Another question....
>
> I deceided to create a small class for button animation:

<snip>

> Works great, except that how do you catch the fact that the window is
> destroying in order to cancel the time.  In C++ I would have a 
> destructor,
> but here I'm not sure.

Generally speaking, I don't think there is a way to reliably catch the 
garbage collection of an object in Ruby. I've had at best mixed success 
using Ruby's finalizers for this kind of thing. However, in this case 
you may be able to override the widget's destroy() method and remove 
the timeout there:

	class FXAnimatedButton
		def destroy
			getApp().removeTimeout(...)
			super # call base class version of destroy()
		end
	end

I have not tried this, but it seems like it should work.

Hope this helps,

Lyle