+
+ /**
+ Returns the client object associated with the given item and transfers
+ its ownership to the caller.
+
+ This method, unlike GetClientObject(), expects the caller to delete the
+ returned pointer. It also replaces the internally stored pointer with
+ @NULL, i.e. completely detaches the client object pointer from the
+ control.
+
+ It's an error to call this method unless HasClientObjectData() returns
+ @true.
+
+ @param n
+ The zero-based item index.
+ @return The associated client object pointer to be deleted by caller or
+ @NULL.
+
+ @since 2.9.2
+ */
+ wxClientData *DetachClientObject(unsigned int n);
+
+ /**
+ Returns true, if either untyped data (@c void*) or object data (wxClientData*)
+ is associated with the items of the control.
+ */
+ bool HasClientData() const;
+
+ /**
+ Returns true, if object data is associated with the items of the
+ control.
+
+ Object data pointers have the type @c wxClientData* instead of @c void*
+ and, importantly, are owned by the control, i.e. will be deleted by it,
+ unlike their untyped counterparts.
+ */
+ bool HasClientObjectData() const;
+
+ /**
+ Returns true, if untyped data (@c void*)
+ is associated with the items of the control.
+ */
+ bool HasClientUntypedData() const;
+
+