[news.eclipse.platform.swt] Re: Controls on ScrolledComposite 'guzzles'

[Adam Pordzik <adresseverbummelt@xxxxxx>]

Emil Crumhorn schrieb:
> I tested your code and after clicking the "freeze" button, scrolling still 
> works fine for me. But..

Hmm. Due to your posting I've first removed every obsolete swt.jat/dll, 
 but that doesn't help. What exactly did you have done? It its't needed 
to click on the Button in my example, a simple Label works also (better: 
doesn't work) when the cursor comes over this control.

Or is my approach to place a composite for collecting Controls inside 
another composite bad?

> You might want to take a look at the ScrollWheel events added in 3.1M4+ that 
> allow you to listen to the scrollwheel. Some controls on a scrollable canvas 
> will not scroll the canvas, (some for good reason, such as textareas with 
> their own scrollbars).

Yes. for sure! But i don't want wheeling stopping, when cursor gets over 
a drop-down box or even a label. :(

Is there another way? I try to sketch the layout I want to arrange:

+-----------------------------------------------+
| Label | Text                         | Button |
+-----------------------------------------------+
|                                             |^|
|                                             | |
|  scrollable area with misc. control in it.  | |
|                                             | |
|                                             |v|
+-----------------------------------------------+
|                                      | Button |
+-----------------------------------------------+

So, these controls were arranged within a GridLayout, the inner area is 
the named ScrolledComposite, within a 'normal', laid-out composite with 
Labels, Checkboxes, Buttons etc. (And again, if I didn't verbalized it 
correctly) As long as my mousecursor stays over the scrollbar, the 
composites 'backgroud', everythings works well, but when the cursor 
comes over a Label e.g. due to wheeling, scrolling stops.


works:
+----------------------------------+
|                                |^|
|  Label         Label           | |
|  Button        Text   |\       | |
|                       | \      |v|
+----------------------------------+


doesn't work:
+----------------------------------+
|                                |^|
|  Label         Label           | |
|  Button        T|\t            | |
|                 | \            |v|
+----------------------------------+


where

"|\ "
"| \"

is my mousecursor.

Would it help, if I post longer, "real-world" code?

A

--