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Re: creating a cocoa nsapp event polling callback

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Re: creating a cocoa nsapp event polling callback

Subject: Re: creating a cocoa nsapp event polling callback
From: Daniel Dickison <email@hidden>
Date: Thu, 27 Sep 2007 15:19:08 -0400

I guess I'm looking something like this:
- (void)
publicMethodCalledBeforePollingNSApplicationsNextEventsPerFrame;
Is there anything like this?
How about overriding NSApplication's -sendEvent:?

The problem with -sendEvent: is that it doesn't get called for mouse- up events if a control takes over the event queue in an event tracking run loop (which NSButton etc. does).

I think Quartz Event Taps are the correct way to do this, although I haven't used it myself: http://developer.apple.com/documentation/Carbon/Reference/ QuartzEventServicesRef/Reference/reference.html

Before I learned about Quartz Events, I implemented something similar by hacking -sendEvent: and the various NSControl subclasses' - mouseDown: and using +poseAsClass:. Not recommended, though you can get it to work...

Daniel
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