On 01/03/2012, at 10:05 AM, Howard Moon wrote:

> HI,
> 
>       I have a an audio plug-in, run inside a host application, that provides 
> me a window in which my plug-in's UI is drawn.  What I would like to do is to 
> make a modal window, but one that in ONLY modal in relation to my plug-in 
> window.  Is that possible?  It's easy on Windows, but I don't see how to do 
> that in Cocoa.  The docs talk about an "application modal" or a "modal 
> session", but neither of those looks appropriate.  I don't want to prevent 
> the user from accessing the host or OTHER plug-ins' windows, but I need to 
> prevent them from accessing MY plug-in's window until they click Save or 
> Cancel.  So application modal doesn't look right.  On the other hand, a modal 
> session doesn't seem right, either, since I'm not in a loop doing any work at 
> the time, just waiting for the user to set some plug-in preferences.  And I I 
> don't see any way to make the orderingMode permanent, such as an 
> "alwaysOnTop" flag or something.



Use a sheet. That is Cocoa's solution for making a modal window relative to 
another window. Don't try to force a non-sheet window always on top or anything 
like that, your users will think your app/plugin sucks or is broken.

--Graham



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