Bug 16514 - Property setter for NSMenuItem.Submenu does not allow null values to be assigned.
Summary: Property setter for NSMenuItem.Submenu does not allow null values to be assig...
Alias: None
Product: Xamarin.Mac
Classification: Desktop
Component: Library (Xamarin.Mac.dll) ()
Version: 1.12.0
Hardware: Macintosh Mac OS
: Normal normal
Target Milestone: 2.0.x
Assignee: Chris Hamons
Depends on:
Reported: 2013-11-29 10:32 UTC by Andrew Young
Modified: 2015-03-03 06:11 UTC (History)
3 users (show)

Is this bug a regression?: ---
Last known good build:

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Description Andrew Young 2013-11-29 10:32:45 UTC
Simple to reproduce: NSMenu.Submenu simply does not allow a null value to be assigned, where the native NSMenu has no such restriction.  It throws this:

System.ArgumentNullException: Argument cannot be null.
Parameter name: value
  at at MonoMac.AppKit.NSMenuItem.set_Submenu (MonoMac.AppKit.NSMenu) <IL 0x00016, 0x00077>

I'm working around the problem like this:

MonoMac.ObjCRuntime.Messaging.void_objc_msgSend_IntPtr(menuItem.Handle, MonoMac.ObjCRuntime.Selector.GetHandle("setSubmenu:"), IntPtr.Zero);

Which works as an interim fix, but it would be better if the wrapper was updated.

Xamarin Studio 4.2.1 (build 1)
Mono 3.2.5
Mac OS X 10.9
Comment 1 Andrew Young 2013-11-29 10:36:57 UTC
Sorry, I meant NSMenuItem.Submenu does not allow null values to be assigned (NSMenu has no submenu property).
Comment 2 Timothy Risi 2015-02-20 21:42:37 UTC
Fixed on master / 714ee6b4dd94e029de6d09a83a79c56609b6e391
Comment 3 Rajneesh Kumar 2015-03-03 06:11:00 UTC
I have checked this issue with the following builds:

=== Xamarin Studio ===
Version 5.8 (build 1043)
Installation UUID: 011d70a5-dede-428b-ab04-ef451c2e539d
Mono 4.0.0 ((detached/2634099)
GTK+ 2.24.23 (Raleigh theme)
Package version: 400000017
Apple Developer Tools Xcode 6.1 (6604)
Build 6A1052d
Xamarin.Mac Version: (Business Edition)
=== Build Information ===
Release ID: 508001043
Git revision: eeba4b77cc5ab021f9c5e2bddf16272e1f6b75d9
Build date: 2015-03-02 06:49:10-05
Xamarin addins: a58814e6e6034bf1169e758b92ead093a3f40404
Operating System Mac OS X 10.9.5
Darwin MacMini.local 13.4.0 Darwin Kernel Version 13.4.0
Sun Aug 17 19:50:11 PDT 2014
root:xnu-2422.115.4~1/RELEASE_X86_64 x86_64

This issue is working fine now. I observed that property setter for NSMenuItem.Submenu allow null value to be assigned. Please refer the screencast :http://www.screencast.com/t/ayppp68hR

This issue has been fixed, hence I am closing this issue.