There doesn't seem to be any reason to forbid them and this change allows wxExecute() without wxEXEC_NOEVENTS to work without assertion failures when called from inside wxYield(). git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@77650 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775