In wxMSW, use IRichEditOleCallback::GetContextMenu() to provide our default context menu for rich text controls, instead of using EVT_CONTEXT_MENU. The latter completely overrides native control's handling and in particular breaks Windows 8's builtin spellchecking support. Fall back to the previous non-OLE code for older richtext versions. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_3_0_BRANCH@76726 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775