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 protected]> 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 > _______________________________________________ Cocoa-dev mailing list ([email protected]) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [email protected]
