Initially I assigned a contextmenu to the GridGroupingControl. It worked fine. Since I need to differentiate if the context menu is on column header/regular cell/blank area, I added TableControlCellMouseUp handler. I found the context menu is not working after the handler is added. I can popup the context menu in header/cell, but I have no way to popup it in blank area.
what''s the proper way to popup context menu in any situation?