Hello,
I needed to include <wx/imaglist.h> in wxSmith/wxsresourcetree.cpp to fix a compile error.
--- src/plugins/contrib/wxSmith/wxsresourcetree.cpp     (revision 3648)
+++ src/plugins/contrib/wxSmith/wxsresourcetree.cpp     (working copy)
@@ -25,6 +25,7 @@
 #include "wxsresourcetreeitemdata.h"
 
 #include <wx/image.h>
+#include <wx/imaglist.h>
 #include <wx/intl.h>
 
 #include "configmanager.h"
C::B rev3645, wxGTK 2.8, Fedora Development
It looks like that in wxMSW imaglist.h is included automaticly via wx.h -> toolbar.h -> tbar95.h