Added private wxEVT_AFTER_CHAR event for wxMSW implementation needs.

This event is sent by wxMSW after the default handling of WM_CHAR has taken
place. It can be used to define an event handler triggered by key presses and
having access to the new value of the control, updated to take the last key
press into account.

This event will be used by auto-completion implementation for wxMSW only for
now.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@67512 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/event.h

@@ -713,6 +713,10 @@ wxDECLARE_EXPORTED_EVENT(WXDLLIMPEXP_CORE, wxEVT_KEY_UP, wxKeyEvent);
 #if wxUSE_HOTKEY
 wxDECLARE_EXPORTED_EVENT(WXDLLIMPEXP_CORE, wxEVT_HOTKEY, wxKeyEvent);
 #endif
+// This is a private event used by wxMSW code only and subject to change or
+// disappear in the future. Don't use.
+wxDECLARE_EXPORTED_EVENT(WXDLLIMPEXP_CORE, wxEVT_AFTER_CHAR, wxKeyEvent);
+
     // Set cursor event
 wxDECLARE_EXPORTED_EVENT(WXDLLIMPEXP_CORE, wxEVT_SET_CURSOR, wxSetCursorEvent);