Re: NSReadPixel
Re: NSReadPixel
- Subject: Re: NSReadPixel
- From: Kyle Sluder <email@hidden>
- Date: Mon, 13 Feb 2012 09:21:09 -0800
On Feb 13, 2012, at 8:48 AM, koko <email@hidden> wrote:
> 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.
Well, as long as you're not using NSReadPixel to try to take a screenshot. ;-)
This page on CocoaDev suggests using a transparent window: http://www.cocoadev.com/index.pl?GettingTheColorUnderTheCursor
But I don't think a screen-sized window is necessary. You might be able to create a transparent 1px-by-1px window that follows the cursor hotspot, then lock focus on its contentView and call NSReadPixel.
--Kyle Sluder
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