Re: [platform-swt-dev] Why MouseWheel doesn't work sometimes ?

[Duong Nguyen <duongn@xxxxxxxxxx>]

I tried list -- it appears to consume
the mousewheel events and not pass the parent. 

Duong

Arnaud De Muyser <ademuyser@xxxxxxxxxx>
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10/19/2007 04:42 AM

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cc	"Eclipse Platform SWT component developers list." <platform-swt-dev@xxxxxxxxxxx>, Jerome Gout <jerome.gout@xxxxxxxxxx>, platform-swt-dev-bounces@xxxxxxxxxxx
Subject	Re: [platform-swt-dev] Why MouseWheel doesn't work sometimes ?

I'm agree with that point of view also. 

If fact there is just a little difference in my snippet,
that is the inner ScrolledComposite does not display scrollbars (no need),
In that case, I think mousewheel events should be passed to its parents,
making the outer scrolledcomposite to scroll. 

What is the expected behaviour for swt widget ? 
In other words, can we think this is an issue ? 

Thanks for your help. 

Arnaud.

Jim White <jim@xxxxxxxxxxxxxx>
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10/18/2007 11:07 PM

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cc	Jerome Gout/France/IBM@IBMFR
Subject	Re: [platform-swt-dev] Why MouseWheel doesn't work sometimes ?

The nicest behavior is when a scrollable control is at a limit then it
passes the scroll events for that direction on to it's parent.

Jim

Duong Nguyen wrote:

> That appears to be the correct behaviour. The inner most scrollable
> control that has focus will handle the mousewheel event.
> If you have a list inside a scrolled composite and the list has focus,
> the list will handle the mousewheel event.
> 
> Duong
> 
> *Arnaud De Muyser <ademuyser@xxxxxxxxxx>*
> Sent by: platform-swt-dev-bounces@xxxxxxxxxxx
> 
> 10/18/2007 11:30 AM
> Please respond to
> "Eclipse Platform SWT component developers list."  
    
>  <platform-swt-dev@xxxxxxxxxxx>
> To
>                  platform-swt-dev@xxxxxxxxxxx
> cc
>                  Jerome
Gout <jerome.gout@xxxxxxxxxx>
> Subject
>                  [platform-swt-dev]
Why MouseWheel doesn't work sometimes ?
> 
> 
> Hi !
> 
> Reproducing in this snippet () the case of our program,
> I whish to know why, when focus control is on check/push or text widget
> on the right,
> the mouse wheel events doesn't move the vertical scroll bar ?
> 
> This seems belong to secondary ScrolledComposite contained inside
the 
> one displaying
> vertical scroll bar.  But as this secondary SC does not display
any 
> scroll bar,
> the expected behavior (my simple way of thinking), is to forward 
> mousewheel event to
> parent's scrolledcomposite.
> Do I am wrong thinking that ?
> 
> Thanks for your help !
> 
> Arnaud de MUYSER. _______________________________________________

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