multicolumn tree drawing bug

[Frank Benoit]

Bill Baxter schrieb:
> On win32, in the ControlExample, Tree panel, if you turn on multiple 
> columns and headers, resizing columns doesn't trigger a repaint of the 
> newly exposed portions of the columns.
> 
> --bb

Thanks Bill for the report.

In case you have more info to add, I created a ticket: 
http://www.dsource.org/projects/dwt-win/ticket/12