Re: Quartz flash screen updates
Re: Quartz flash screen updates
- Subject: Re: Quartz flash screen updates
- From: Shawn Erickson <email@hidden>
- Date: Tue, 24 Apr 2007 19:38:12 -0700
On Apr 24, 2007, at 5:15 PM, Andrew Farmer wrote:
On 24 Apr 07, at 17:02, Steve Israelson wrote:
When this is turned on in Quartz, I see yellow flashes where the
screen updates.
Is there a way in my application to get at this information, ie
the area of the screen that was changed?
Nope. All Quartz Debug does is set a flag in the window server that
displays this information internally. (Turn on "flash screen
updates" and force-quit Quartz Debug - the flashes don't stop until
you reopen the utility and turn it off.)
AFAIK, VNC and Snapz Pro don't have any way of getting at this
information - they just take lots of screenshots and compare them.
Review...
"Getting Information About Refresh and Move Operations"
<http://developer.apple.com/documentation/GraphicsImaging/Reference/
Quartz_Services_Ref/Reference/reference.html#//apple_ref/doc/uid/
TP30001070-CH202-341696>
-Shawn
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