On Jun 18, 2014, at 8:36 AM, Kevin Meaney <[email protected]> wrote:
>> 
>> The sequence of events are:
>> 
>> 1. Drag window so that it is partially offscreen.
>> 2. Draw into the window where part of the drawing happens in the part of the 
>> window that is offscreen.
> 
> Ok, what does this mean? In AppKit, you don’t draw into a window; the window 
> asks you to draw. If you mean that you’re sending -drawRect: to the view 
> yourself, that will never work.

Drawing happens when I receive an xpc message containing a drawing command. To 
do the drawing I get the NSGraphicsContext from which I pull the graphicsPort 
which is a special kind of CGContext. I then use CoreGraphics commands to do 
the drawing.

I looked at SonOfGrab when I first implemented this, so I'm looking at it again 
to see if it can provide some clues.

Kevin

> It’s also possible that CGWindowList doesn’t force a window to draw its 
> entire area. Do you get the same results with the SonOfGrab sample project? 
> <https://developer.apple.com/library/mac/samplecode/SonOfGrab/Listings/Controller_m.html#//apple_ref/doc/uid/DTS10004490-Controller_m-DontLinkElementID_4>
> 
> --Kyle Sluder


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