Bill Atkinson

“Photoshop happened because of the design of Quickdraw's API. It was impossible for there to be a Windows version of Photoshop because it didn't have the same API shape and DirectX... The Macintosh Quickdraw had this routine built upon this idea of regions.”

“Bill Atkinson, the engineer who recently passed away, worked on the Macintosh, specifically Quickdraw, which was Apple's graphics library. Photoshop happened because of the design of Quickdraw's API.”