Re: NSReadPixel
Re: NSReadPixel
- Subject: Re: NSReadPixel
- From: koko <email@hidden>
- Date: Mon, 13 Feb 2012 09:48:52 -0700
Hello Kyle -
What I am trying to accomplish is my own 'eye-droper' color picker (for reasons I cannot get into).
Can you point me to the best method as I have done things other than a plain read pixel to no avail.
Thanks!
-koko
On Feb 11, 2012, at 10:09 AM, Kyle Sluder wrote:
> On Fri, Feb 10, 2012 at 4:44 PM, koko <email@hidden> wrote:
>> I have two monitors connected.
>>
>> When I call NSreadPixel with a point that is on the main screen, origin 0,0 it returns the appropriate NSColor;
>>
>> When I call NSreadPixel with a point that is on the 2nd screen, origin -1280,0 it returns nil as the NSColor;
>>
>> So, how do I get the NSColor for a pixel whose x coordinate is <0?
>
> 1. Are you sure you're actually passing the correct point? NSReadPixel
> operates in the coordinate system of the currently-focused view. You
> might be getting the right color by sheer luck.
> 2. Why are you using NSReadPixel at all? There might be better ways of
> accomplishing your goal.
>
> --Kyle Sluder
>
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