Re: Writing optimized screeshot utility.

FROM : Shawn Erickson
DATE : Tue Nov 20 16:14:26 2007

On Nov 20, 2007, at 4:02 AM, Teemu Keinonen wrote:

> Hi all,
>
> I want to write optimized screenshot utility to make videos from 
> screeen and
> therefore i want to know what parts of the screen have changed since 
> last
> snapshot. I can think of two alternatives:
>
> 1) Is it possible to get dirty region information from window 
> manager via a
> callback or such?


Yes.

<http://developer.apple.com/documentation/GraphicsImaging/Reference/Quartz_Services_Ref/Reference/reference.html#//apple_ref/doc/uid/TP30001070-CH1g-F16970
>

-Shawn