This simply does the drawing for a few ui elements without handling anything like states or mouse clicks. I didn't feel like making my own graphics but wanted some neat ui elements for playing around with different variables live.

source code:
https://github.com/Aerotune/Gosu-Cloudy-Ui
source of graphics:
http://kbsportfolio.com/2011/10/16/resource-for-designer-cloudy-ui-kit/

This is just a cursor with an normal arrow, pointer, and grab hand
source code:
https://github.com/Aerotune/Gosu-Neutral-Cursor
source of graphics:
http://kde-look.org/content/show.php?content=28310