int flags = 0;
wxGenericTreeItem *thisItem = m_anchor->HitTest(pt, this, flags, 0);
wxGenericTreeItem *underMouse = thisItem;
+#if wxUSE_TOOLTIPS
bool underMouseChanged = (underMouse != m_underMouse) ;
+#endif // wxUSE_TOOLTIPS
if ((underMouse) &&
(flags & wxTREE_HITTEST_ONITEMBUTTON) &&