May 2018
Beginner
252 pages
6h 19m
English
We start with the most basic types:

Here is the VID code:
;-- see Chapter09/base-box-image.red:view [ base box red image 140x140 %heads.jpg below text "I am a button:" button %heads.jpg [quit]]
Base is the most primitive of them all. It displays a gray rectangle, but it can respond to a click (on-down) event; it can show an image, and it can be used to draw inside it. A box is like a base, but it is transparent by default, so we give it a color to make it show.
An image is a base face with a default size of 100 x 100, used to show a picture. Whenever a face has an image file as a facet, it is used as a background image ...