NSPopUpButton issue (possible patch)

[Michael Hanni]

Howdy,

NSPopUpButton and co. does some weird things while drawing.  The most obvious
in my mind is the strange changes in NSOffState and NSOnState.  On a slow
machine, like mine, when you change the selection in an NSPopUpButton you
actually see the menuview scramble to redraw the view to show the change in
state (i.e. a checkmark) before it finishs and orders out.  This behaviour
would work visually if we had MacOSX style menuViews but since we don't I think
we can safetly remove this with a comment.

Also, the trackWithEvent method in NSMenuView goes through alot of work even if
we are a popupbutton.  Thus, knowing that we don't need the extra handling we
can bail out of the loop and speed things up a bit -- I think.

Anyhow, here is a tiny patch for discussion (not really submission).

Cheers,

Michael

p.s. another beautiful day here in Salt Lake :-)

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