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Re: Obtaining the CGContextRef
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Re: Obtaining the CGContextRef

On Oct 12, 2006, at 10:53 AM, David Knuth wrote:

Currently, I am stalled on how to obtain the CGContextRef associated with an HIView.  The HIView will contain all the Quartz drawing my app will do and is updated at 10 Hz from an EventTimer which sends a kEventControlDraw to the HIView to have it draw itself.  This is done by my app creating the event, sending it, and having a handler catch it and pull out of the event the CGContextRef.  Since no where in my code to I explicitly create or obtain the CGContextRef associated with the HIView, I don't know how to obtain it and add it as a parameter to the Draw event.  The kEventControlDraw that is sent due to window resizing, etc., automatically provides the context as a parameter to the event.

Don't create an event, call HIViewSetNeedsDispaly(theHIView, true) in your timer. The OS will handle the rest.

--

Reality is what, when you stop believing in it, doesn't go away.

Failure is not an option. It is a privilege reserved for those who try.


David Duncan


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