Unfortunately Clang intelligent flow analysis prevents us from using different asserts for invalid parameter value and unhandled one, which could happen if more elements are added to wxMouseButton enum in the future. Closes #15201. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@73972 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775