On 22 May 2014, at 10:54 AM, edward taffel <etaf...@me.com> wrote:
> i find no mention of thread safety in the NSOpenPanel doc, but the doc
> mentions ‘Open panels are drawn in a separate process by the powerbox’:
> perhaps this is the reason.
This is one of those rules so universal in Apple APIs that it is never
repeated, so it can be easy to miss:
No Apple API is thread-safe unless expressly documented as being so.
Breaking the rule may work for some combinations of hardware, application, OS,
and luck, but breaking it is as far outside the API contract as you can get.
What you found in the documentation makes your inference reasonable, but
“reasonable” and “true” are not the same thing.
— F
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