We've had probably with memory leaks on Windows Form subscribed menu item clicks, just with plain vanilla C#.
Check out this link http://www.bobpowell.net/eventsubscribers.htm (There are some additional steps for System.Windows.Forms.Component), and here's some sample code I wrote in C# that you could leverage: [TestClass] public class UnhookEventsTests { private class Item { public event EventHandler Clicked; public void FireEvent() { if(Clicked != null) { Clicked(this, EventArgs.Empty); } } } [TestMethod] public void UnhookEvents() { Item item = new Item(); item.Clicked += Clicked; item.Clicked += Clicked2; item.FireEvent(); Assert.AreEqual(2, callCount_); FieldInfo field = typeof (Item).GetField("Clicked", BindingFlags.NonPublic | BindingFlags.Instance); Delegate del = (Delegate) field.GetValue(item); Delegate[] list = del.GetInvocationList(); Assert.AreEqual(2, list.Length); //This works: //foreach (Delegate d in list) //{ // item.Clicked -= (EventHandler) d; //} //This is more generic and avoids the cast to the specific handler type EventInfo eventInfo = typeof (Item).GetEvent("Clicked"); foreach (Delegate d in list) { eventInfo.RemoveEventHandler(item, d); } item.FireEvent(); Assert.AreEqual(2, callCount_); } private int callCount_; private void Clicked(object sender, EventArgs e) { callCount_++; } private void Clicked2(object sender, EventArgs e) { callCount_++; } } -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Kamil Dworakowski Sent: Saturday, November 29, 2008 1:16 PM To: Discussion of IronPython Subject: Re: [IronPython] Event unhooking and IPy2 On Fri, Nov 28, 2008 at 11:39 AM, Michael Foord <[EMAIL PROTECTED]> wrote: > Just as a follow up to this - the reason for the hack below is that > subscribing to events from IronPython is still causing our UI objects (and > their whole object graphs) to not be garbage collected. To be fair, we have no reason to belive it is IronPython's fault. The bug that event handlers would prevent garbage collection was fixed, and we were able to remove *some* of the event nuking. _______________________________________________ Users mailing list Users@lists.ironpython.com http://lists.ironpython.com/listinfo.cgi/users-ironpython.com ======= Notice: This e-mail message, together with any attachments, contains information of Symyx Technologies, Inc. or any of its affiliates or subsidiaries that may be confidential, proprietary, copyrighted, privileged and/or protected work product, and is meant solely for the intended recipient. If you are not the intended recipient, and have received this message in error, please contact the sender immediately, permanently delete the original and any copies of this email and any attachments thereto. _______________________________________________ Users mailing list Users@lists.ironpython.com http://lists.ironpython.com/listinfo.cgi/users-ironpython.com
