Well JorisA, I started making the ux because I couldn't do the things I wanted with GroupingView. Though making this a plugin sounds like the correct way. Then it can be used with any view!
Right now it seems like the ColumnModel is too weak and that the views of the grid does much of the ColumnModels work.. Well, in this ux any way.. Then again I'm new to this stuff..
I could not get it work as a plugin, adding to the Config GridPanel:
plugins: new Ext.ux.GroupHeaderGridView(forceFit (true)),
Nothing happens.
Furthermore, running as view "view: new Ext.ux.GroupHeaderGridView (forceFit (true))," the code works well in Firefox, but when I try to run in IE6, all columns header gets the same width ...
It seems that "table-layout:fixed;" causes a strange problem in IE ... The following code in my css solved the "width problem"... (see ext-2.0/resources/css/grid.css)