Re: IB_DESIGNABLE - anyone got it to work?
Re: IB_DESIGNABLE - anyone got it to work?
- Subject: Re: IB_DESIGNABLE - anyone got it to work?
- From: Sean McBride <email@hidden>
- Date: Tue, 12 May 2015 11:22:40 -0400
- Organization: Rogue Research Inc.
On Tue, 12 May 2015 16:43:32 +1000, Graham Cox said:
>I’m exploring the use of the new IB_DESIGNABLE macro to preview a custom
>view live in IB.
>
>It keeps complaining that my view is taking too long to draw, over
>200mS, which seems to be a limit built into IB. However, when I measure
>the time myself for drawing, it’s nowhere near this long - 10mS max,
>typically 2mS. Because of this constant and apparently erroneous
>complaint, IB doesn’t show my custom view. I’ve even tried to do some
>minimal drawing (just filling the dirty rect) for just the Interface
>Builder target, but I get the same problem, so it’s pretty clear that
>the timeout is nothing to do with my drawing.
>
>At other times IB complains that the rendering agent “crashed”, though
>it’s actually an exception from the bowels of Core Graphics. My usual
>drawing code never triggers the same exception, only when it’s drawn by
>the IB rendering agent.
>
>Has anyone been able to make this work?
After some difficulty, yes. But it seems to only support direct subclasses of NSView, not NSControl for example. What's your superclass?
Cheers,
--
____________________________________________________________
Sean McBride, B. Eng email@hidden
Rogue Research www.rogue-research.com
Mac Software Developer Montréal, Québec, Canada
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