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On Sep 18, 2018, at 6:44 AM, Eric E. Dolecki <edolecki@gmail.com> wrote:

I have a UI control that can be adjusted up and down using touch & drag. I've been asked to provide a control value based on how far the drag is via distance. So far so good.

What my designer wants is a value change of every 20 pixels or so (control is 150px tall @ the moment) - so every 20 pixels = a change of 1.

I think you mean points not pixels. Not familiar with UI controls but this sounds very similiar to NSSlider. – maxValue – minValue – setMaxValue: – setMinValue:

This will require multiple touch and drags but he's fine with it.

This does not sound right. I think something is wrong. --Richard Charles _______________________________________________ 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/site_archiver%40lists.appl... This email sent to site_archiver@lists.apple.com