revised a* interface headers; categorized many functions; moved some functions to their correct header

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@52499 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

interface/event.h

@@ -2766,3 +2766,13 @@ public:
     void SetCursor(const wxCursor& cursor);
 };
 
+
+
+/**
+    In a GUI application, this function posts @a event to the specified @e dest
+    object using wxEvtHandler::AddPendingEvent.
+
+    Otherwise, it dispatches @a event immediately using wxEvtHandler::ProcessEvent.
+    See the respective documentation for details (and caveats).
+*/
+void wxPostEvent(wxEvtHandler* dest, wxEvent& event);