Re: Updating NSMenu while it's open
Re: Updating NSMenu while it's open
- Subject: Re: Updating NSMenu while it's open
- From: Graham Cox <email@hidden>
- Date: Thu, 19 Apr 2012 11:47:06 +1000
On 19/04/2012, at 10:04 AM, Jerry Krinock wrote:
>
> On 2012 Apr 18, at 13:14, vinayak pai wrote:
>
>> I have a NSMenu with dynamically added NSMenuItems. The NSMenu is not refreshing properly while it's kept open.
>
> I do not believe there is any way to refresh a menu while it is open. The method in which you do your dynamism, -menuNeedsUpdate, is only guaranteed to be invoked when the user clicks the menu. Although I've seen it invoked at other times, this seems to be some kind of performance optimization.
>
> You must redesign your app to not require refreshing a menu while it is open.
Not true - the system's WiFi menu updates while it is open.
Perhaps you need to use a view-based menu item to achieve this? You can use NSMenuItem's -setView: method to attach a view to the item, then (I assume, I haven't done it myself) you can use the usual -setNeedsDisplay on that view to update it as necessary.
--Graham
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