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Re: Coordinates inside a button
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From: |
A. Arias |
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Subject: |
Re: Coordinates inside a button |
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Date: |
Mon, 17 Dec 2012 11:59:22 -0600 |
El lun, 17-12-2012 a las 08:08 +0100, Dr. H. Nikolaus Schaller escribió:
> Am 17.12.2012 um 06:45 schrieb Germán A. Arias:
>
> > Inside a window the coordinates system has its origin at the lower left
> > corner, and X axis is positive to the right, and Y axis is positive to
> > up. But inside a button I found that the origin is at upper left corner,
> > and that Y axis is positive to down. See attached app to test it. This
> > app prints at shell the coordinates where the mouse was clicked inside
> > the button. Is this the expected behaviour?
>
> Yes. Please check the influence of -[NSView isFlipped].
> It is overwritten in NSButton (which is a subclass of NSView) to
> return YES.
>
Well I expected a normal coordinate system, But now I see this is not
the case. Thanks for the explanation.