I am looking for a 3 state checkbox added in advancedDataGrid when data is grouped, similar to the one i find in the search
http://techrays.wordpress.com/2008/02/18/a-3-state-checkbox-in-an-advanceddatagrid-itemrenderer/
this is really good other than its not working for an arrayCollection as a data provider, as it is using the XMLListCollection
I am not sure what changes need to be made in the file to make it work for arrayCollection
Please help!!!!