+ // called by wxTextTreeCtrl when it marks itself for deletion
+ void ResetTextControl();
+
+ // find the first item starting with the given prefix after the given item
+ wxTreeItemId FindItem(const wxTreeItemId& id, const wxString& prefix) const;
+
+ bool HasButtons(void) const
+ { return (m_imageListButtons != NULL)
+ || HasFlag(wxTR_TWIST_BUTTONS|wxTR_HAS_BUTTONS); }
+
+ void CalculateLineHeight();