Duplicate argument name fix, props Lauri Nurmi.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_8_BRANCH@74662 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Added back missing event.Skip() removed accidentally in r72302 disabling editing


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_8_BRANCH@74990 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775