Sent when the user clicks on the close button of an item in the CTabFolder. The item being closed is specified
in the event.item field. Setting the event.doit field to false will stop the CTabItem from closing.
When the CTabItem is closed, it is disposed. The contents of the CTabItem (see CTabItem.setControl) will be
made not visible when the CTabItem is closed.
@param event an event indicating the item being closed
Sent when the user clicks on the close button of an item in the CTabFolder. The item being closed is specified in the event.item field. Setting the event.doit field to false will stop the CTabItem from closing. When the CTabItem is closed, it is disposed. The contents of the CTabItem (see CTabItem.setControl) will be made not visible when the CTabItem is closed.
@param event an event indicating the item being closed
@see CTabItem#setControl