Explain that catching mouse events directly doesn't work. Also make it clear that double clicking an item can be caught by processing wxEVT_COMMAND_DATAVIEW_ITEM_ACTIVATED. See #14111. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@71361 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775