Good idea the snippet inserted in the wiki.  Next time I will do so.

One possible solution for easing this issue is to have this as default
values:

minWidth of the textbox set to some reasonable value, width='1*'
width combo = 'auto'
width button = 'auto'

so the only setting for setting it inside a GridLayout is to set the combo
width=100%.

If I click the combo (or press tab until the combo has the focus), and press
Alt-Down, the list is shown.  

Drop-down list width is determined automatically to the needed width.


Hugh Gibson wrote:
> 
> I added a snippet about it at
> http://qooxdoo.org/documentation/snippets/comboboxex_in_gridlayout
> 
> Is that change compatible with other normal uses of the combo? How, in
> other words, can the details be hidden from normal users in the future, so
> they can just drop a combo box or ComboBoxEx into a form and just have it
> work?
> 
> However, the drop-down list is still not the full width of the edit
> control. How do I make it the full width? And there is still the problem
> of the keyboard activation of the drop-down list using alt+down arrow.
> 
> Hugh
> 

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