[news.eclipse.platform.swt] Re: GridLayout fill problem

[Eric Rizzo <eclipse-news@xxxxxxxxxxxx>]

Alexander Shterev wrote:
> Hi,
>
> I couldn't think of a good title for this entry, so here's the longer 
> and clearer version:
>
> I need to split a composite into two columns (e.g. with GridLayout or 
> TableWrapLayout)and add components to each of them - something like the 
> Plugin Manifest Editor in PDE. The idea is to fill the whole editor with 
> this composite, so that each column is exactly half the size of the 
> editor space (i.e. the layout will be re-calculated when the window is 
> enlarged).
>
> So far it goes like this:
> composite.setLayout(new GridLayout(2,true));
> GridDataFactory.fillDefaults().align(SWT.FILL, SWT.FILL).grab(true, 
> true).applyTo(composite);

This code is either wrong or the second line is irrelevant and you 
included it here by mistake. A composite has its layout set via 
setLayout(), correct; but setting that composite's layout data does not 
have the effect you seem to think it does. Applying the GridData to 
composite affects its behavior in its parent, not the behavior of 
composite's children. You need to set GridData on the children of 
composite appropriately.

Hope this helps,
	Eric


> The problem is that after adding some wider controls to this composite 
> (wider than half the editor width), the column layout is then 
> re-calculated and respectively the column width is increased. I need to 
> prevent the latter from happening - i.e. I need to have a composite that 
> is both dynamic and will acquire its parent size, and 'static enough' to 
> preserve this size when its children try to enlarge it.
> Is this somehow possible?
>
> Thanx and cheers,
> Alex