[news.eclipse.platform.swt] How to realize this kind of combobox in a ta

["Ace.M" <xxx@xxxxxxxxxxxx>]

Hi
   In my application, I need to realize this kind of combobox in a table:
    1. When the cell is activated, the drop down arrow of the combobox 
will  show. When the cell loses the focus, the drop down arrow of the 
combobox will disappear.(as is shown in the attached file)
    2. I need to change the background color of the combobox.

How can I reach it, thanks.

Attachment: Sample.rar
Description: Binary data