# Custom Controls in iOS - Part 10: Core Image and Core | Ray Wenderlich

**URL:** <https://forums.kodeco.com/t/custom-controls-in-ios-part-10-core-image-and-core-ray-wenderlich/26483>\
**Category:** 🎓 Courses & Articles\
**Created:** [February 21, 2017, 9:41pm UTC](https://forums.kodeco.com/t/custom-controls-in-ios-part-10-core-image-and-core-ray-wenderlich/26483 "2017-02-21T21:41:47Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![catie](https://assets.chunter.kodeco.com/user_avatar/forums.kodeco.com/catie/32/110937_2.png) [@catie](https://forums.kodeco.com/u/catie)\
**Post date:** [February 21, 2017, 9:41pm UTC](https://forums.kodeco.com/t/custom-controls-in-ios-part-10-core-image-and-core-ray-wenderlich/26483/1 "2017-02-21T21:41:47Z")

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Learn how to employ Core Image and Core Graphics to draw the interface of the Colorgon color picker.

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 This is a companion discussion topic for the original entry at [https://www.raywenderlich.com/4433-custom-controls-in-ios/lessons/10](https://www.raywenderlich.com/4433-custom-controls-in-ios/lessons/10)