Re: [Plib-users] enter / leave events for puButtons ?

[Steve B. <sjb...@ai...>]

Sebastian Ude wrote:
 
> Is there an easy way to invoke a callback whenever the mouse pointer enters
> or leaves the area of a puButton ?

PUI wasn't designed to allow that - I suppose you could cheat and in the
motion callback, pass button-is-down values to PUI even when the button
is really up - then in your PUI widget's callback, check whether the
button is *REALLY* pressed down and only take the appropriate action
when it is.

That would require that you set puObject::setActiveDirn ( PU_CONTINUAL )
or something like that.

> I tink of keeping track of the button positions and compare the cursor
> position with the collected positions in my motion callback - but isn't
> there a less difficult way ?

Well, the way I suggest is still rather ugly - but I think it'll work.
Try it in a simple test environment before you start to rely on it!

This kind of 'mouse-over' highlighting is becoming rather popular
(dunno why) - perhaps we should consider extending PUI to do it
properly with a 'mouse-over' callback?

----------------------------- Steve Baker -------------------------------
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