Use Instruments/Core Animation on device. It gives you the same functionality as Quartz Debug in your specific question.

On Jun 13, 2009, at 1:01 AM, Chunk 1978 wrote:

On Sat, Jun 13, 2009 at 3:54 AM, Michael Ash<[email protected]> wrote:
On Fri, Jun 12, 2009 at 8:17 PM, Chunk 1978<[email protected]> wrote:
hum... it seems that Quartz Debugger's Flash Screen function isn't
much help with using the iPhone simulator... since it's an emulator it
will flash the entire screen regardless if setNeedsDisplayInRect is
called.


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