Fixed wxCheckBox on wxGTK (SetLabel called before widget creation),

wxListBox::GetSelection returning -1 now doesn't assert; wxProp improvements
for wxGTK; parser.y includes <io.h> under VC++ to eliminate 'read' warning


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@709 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/gtk1/listbox.cpp

@@ -234,7 +234,9 @@ int wxListBox::GetSelection(void) const
       child = child->next;
     }
   }
-  wxFAIL_MSG("wrong listbox index");
+  // No, I think it's reasonable to return -1 to indicate
+  // there is no selection. -- JACS
+//  wxFAIL_MSG("wrong listbox index");
   return -1;
 }