I took that to mean he was drawing the frame of the accessory view with 
something like NSFrameRect(), not sending a draw message to the accessory view. 
Come to think of it, this answers one of my questions. Assuming the test code 
is something like...

    // Sanity-check the frame of the accessory view.
    [[NSColor redColor] set];
    NSFrameRect([accessoryView frame]);

...it would appear the accessory view has the right frame. My only remaining 
question then is to confirm that the accessory view really is a subview of the 
NSScroller, which is easily checked with a breakpoint in the above code.

When is the superview-subview relationship established? Is *that* code getting 
called?

--Andy

On Jul 7, 2012, at 4:23 PM, Kyle Sluder wrote:

> On Jul 7, 2012, at 1:38 AM, Gideon King <gid...@novamind.com> wrote:
> 
>> 
>> I overrode the drawSelf: method and got it to draw the frame of the 
>> accessory view, to make sure it was positioned correctly, and it drew in the 
>> right place.
> 
> Wait, you told another view to draw from within a separate view's -drawRect:? 
> That's not going to work; the coordinate systems aren't set up right.
> 
> --Kyle Sluder
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