Trackpads are capable of scrolling both vertically and horizontally, and sometimes I wish I could take advantage of that in CC. Adding a separate "horizontal_scroll" event would not interfere with existing programs, and would be useful for programs with scrolling canvases.

If this were added, it should definitively be implemented into Paint.

Sadly I'm not sure this is really possible to implement.

• On Minecraft 1.12, LWJGL 2 doesn't appear to expose the horizontal scroll at all.
• On 1.13 and later, LWJGL 3/GLFW does expose this information, but Minecraft discards it, meaning we can't listen to it without doing some really horrible hacks.