Many changes for wxInputHandler creation mainly related to:

1. Allow the theme to create only the input handlers it customizes instead
   of forcing it to always create a handler even if the standard one is used:
   wxTheme::GetInputHandler() now takes wxInputConsumer to make this possible

2. Prefer delegation to inheritance when creating customized input handlers,
   almost all (except for wxStdScrollbarInputHandler) standard handler classes
   are now private, use wxClassName::GetStdInputHandler() to retrieve the
   standard handler for any class or polymorphic DoGetStdInputHandler()


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@41227 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/univ/inpcons.cpp

@@ -55,9 +55,15 @@ void wxInputConsumer::OnActivate(wxActivateEvent& event)
 // input processing
 // ----------------------------------------------------------------------------
 
+wxInputHandler *
+wxInputConsumer::DoGetStdInputHandler(wxInputHandler * WXUNUSED(handlerDef))
+{
+    return NULL;
+}
+
 void wxInputConsumer::CreateInputHandler(const wxString& inphandler)
 {
-    m_inputHandler = wxTheme::Get()->GetInputHandler(inphandler);
+    m_inputHandler = wxTheme::Get()->GetInputHandler(inphandler, this);
 }
 
 void wxInputConsumer::OnKeyDown(wxKeyEvent& event)