On Feb 15, 2012, at 7:32 AM, koko wrote: > I want to capture a rect centered on the point where the user clicked so I > can get a best fit for the color.
Here's a thought: [NSEvent addGlobalMonitorForEventsMatchingMask:NSMouseMovedMask handler:^(NSEvent * event){ if (event.type == NSMouseMoved) { NSPoint point = [NSEvent mouseLocation]; CGRect mainDisplayBounds = CGDisplayBounds(CGMainDisplayID()); CGPoint cgDisplayPoint = CGPointMake(point.x, mainDisplayBounds.size.height - point.y); CGRect rect = CGRectMake(cgDisplayPoint.x - 10, cgDisplayPoint.y - 10, 20, 20); CGImageRef imageRef = CGWindowListCreateImage(rect, kCGWindowListOptionOnScreenOnly, kCGNullWindowID, kCGWindowImageDefault); magnifierView.image = [[[NSImage alloc] initWithCGImage:imageRef size:rect.size] autorelease]; CGImageRelease(imageRef); } else if (event.type == NSLeftMouseDown) { if (this is supposed to be a color selection click) { grab the pixel color from the image } } }]; -- Seth Willits _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) 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 arch...@mail-archive.com