typedef long wxDataType;
// fwd decl
-class WXDLLEXPORT wxImageList;
-class WXDLLEXPORT wxDragImage;
-struct WXDLLEXPORT wxTreeViewItem;
+class WXDLLIMPEXP_CORE wxImageList;
+class WXDLLIMPEXP_CORE wxDragImage;
+struct WXDLLIMPEXP_FWD_CORE wxTreeViewItem;
// a callback function used for sorting tree items, it should return -1 if the
// first item precedes the second, +1 if the second precedes the first or 0 if
// ----------------------------------------------------------------------------
// wxTreeCtrl
// ----------------------------------------------------------------------------
-class WXDLLEXPORT wxTreeCtrl : public wxControl
+class WXDLLIMPEXP_CORE wxTreeCtrl : public wxControl
{
public:
// creation