Re: Capturing windows in an NSImage

FROM : Ryan Britton
DATE : Thu Jul 20 02:30:12 2006

It does.  I've looked into trying to access window buffers before in 
order to do something along the lines of a screen grabber, but 
everything required to do that is private.

On Jul 19, 2006, at 5:25 PM, Eric Summers wrote:

> Thats a good idea.  It would be nice to have more control... but that
> would probably involve undocumented internals...
>
> On 7/19/06, Ryan Britton <<email_removed>> wrote:

>> Try this:
>>
>> man screencapture
>>
>>
>> On Jul 19, 2006, at 2:31 PM, Eric Summers wrote:
>>
>> > I'm trying to figure out how programs like Apple's Grab screen 
>> capture
>> > application get an image of other application windows.  I thought
>> > of using
>> > an AppleEvent to get the bounds of the windows then capturing the
>> > data using
>> > a big transparent window, but that wouldn't work if the window is
>> > hidden.
>> > Grab will get the image data even if the window is hidden.  Anyone
>> > know how
>> > the Grab application works?
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