Change in wxWindow the access specifier of the wxEvtHandler event processing and queuing functions

from public to protected. Adapt wxWidgets code and wxWidgets samples to always use wxWindow::GetEventHandler()
when calling such functions on a wxWindow rather than directly using wxWindow::ProcessEvent, etc.
This enables correct event dispatching to the event handlers which have been pushed (with PushEventHandler) on the 
windows.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@58381 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/html/helpwnd.cpp

@@ -584,7 +584,7 @@ bool wxHtmlHelpWindow::Create(wxWindow* parent, wxWindowID id,
     // Reduce flicker by updating the splitter pane sizes before the
     // frame is shown
     wxSizeEvent sizeEvent(GetSize(), GetId());
-    ProcessEvent(sizeEvent);
+    GetEventHandler()->ProcessEvent(sizeEvent);
 
     if (m_Splitter)
         m_Splitter->UpdateSize();