New icon for combobox with bitmaps. Improved readability of icons on dark backgrounds. Rgenerated makefiles.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@41624 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

samples/widgets/widgets.cpp

@@ -637,6 +637,8 @@ void WidgetsFrame::OnPageChanging(WidgetsBookCtrlEvent& event)
     // don't allow selection of entries without pages (categories)
     if ( !m_book->GetPage(event.GetSelection()) )
         event.Veto();
+#else
+    wxUnusedVar(event);
 #endif
 }