Re: Running event loop while showing non-standard popup
Re: Running event loop while showing non-standard popup
- Subject: Re: Running event loop while showing non-standard popup
- From: Ken Thomases <email@hidden>
- Date: Mon, 20 May 2013 13:19:51 -0500
On May 20, 2013, at 12:00 PM, Steve Mills wrote:
> None of this code was written by me, so I don't know the reasoning behind the design. We have a popup that shows an NSWindow with an NSBrowser in it. There is a NSPopUpButtonCell subclass that handles the click with trackMouse:inRect:ofView:untilMouseUp:. This trackMouse method calls [NSApp run].
>
> When a click happens outside the browser window, it calls [NSApp stop:nil] from our NSWindowDidResignKeyNotification observer for the browser window. At that point, it seems like the app is actually trying to terminate, because all hell breaks loose - release builds crash with no crash log and debug builds crash with a stack of:
>
> #0-9 is in the dtor for one of our global objects.
> #10 0x91a1cebf in __cxa_finalize ()
> #11 0x91a1fdb9 in exit ()
> #12 0x957ba692 in NSApplicationMain ()
> #13 0x01310fb8 in main ()
>
> This leads me to believe that using run and stop: is the wrong way to do this.
Yes.
> What's another way to start and stop a "local" run loop?
-[NSApplication runModalForWindow:] and either one of the -stopModal… or -abortModal methods. To detect a click outside of the browser window, you may need to add a local event monitor (+[NSEvent addLocalMonitorForEventsMatchingMask:handler:]) as well as monitoring the window's key status.
Regards,
Ken
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