Use treebase.h for enum duplicated in port/treectrl.h.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@34289 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/treebase.h

@@ -28,6 +28,15 @@
 #include "wx/event.h"
 #include "wx/dynarray.h"
 
+// flags for deprecated `Expand(int action)', will be removed in next versions
+enum
+{
+    wxTREE_EXPAND_EXPAND,
+    wxTREE_EXPAND_COLLAPSE,
+    wxTREE_EXPAND_COLLAPSE_RESET,
+    wxTREE_EXPAND_TOGGLE
+};
+
 // ----------------------------------------------------------------------------
 // wxTreeItemId identifies an element of the tree. In this implementation, it's
 // just a trivial wrapper around Win32 HTREEITEM or a pointer to some private