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[Caml-list] Passing self to a new object
- Andrew Lawson
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Date: | 2001-10-28 (14:58) |
From: | Andrew Lawson <andrew@a...> |
Subject: | [Caml-list] Passing self to a new object |
Hi all I'm writing a gui program where the callback for a button creates a new object (also a gui) and needs to pass it a reference to itself in order that the new object can contact the original for information. The classes look something like this; class xyz = let top = ... in let ... = ... in let btnNew = ... ~command:(fun () = new abc self) top in object (self) ... ... end class abc (parent:xyz) = object (self) var myparent = parent ... end My error is; This expression has type < btnDelete : 'a; btnEdit : 'b; btnExit : 'c; btnFind : 'd; btnNew : Widget.button Widget.widget; get_config : 'e -> 'f; list_record_directory : 'g; new_filename : 'h; read_configuration : 'i; self : 'j; set_config : 'k -> 'l -> 'm; topLevel : 'n; .. > but is here used with type 'j Self type cannot escape its class And I have no clue what I am doing wrong :) All suggestions appreciated Andrew -- Andrew Lawson andrew@absentis.com ------------------- Bug reports: http://caml.inria.fr/bin/caml-bugs FAQ: http://caml.inria.fr/FAQ/ To unsubscribe, mail caml-list-request@inria.fr Archives: http://caml.inria.fr