How Adobe made Photoshop cross-platform?

Question

I want just know how Adobe makes Photoshop cross-platform? I know Photoshop is written completely in C++, but what about the GUI? Does Adobe use GUI toolkits?

Answer 1

For any natively compiled, cross-platform project, the solution is typically to have small portions of the code called "wrappers" written exclusively for specific platforms. These wrappers do all the talking directly to the platform.

This makes an app like Photoshop multi-platform, but it wouldn't necessarily build on a platform that Adobe hasn't written wrappers for.