1. MSW message handling simplifications

2. wxDC split into wxDC and wxDCBase
3. Several minor bug fixes, many major new bugs


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@2455 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/checklst.cpp

@@ -365,7 +365,7 @@ void wxCheckListBox::OnChar(wxKeyEvent& event)
   if ( event.KeyCode() == WXK_SPACE )
     GetItem(GetSelection())->Toggle();
   else
-    wxListBox::OnChar(event);
+    event.Skip();
 }
 
 void wxCheckListBox::OnLeftClick(wxMouseEvent& event)