definitions-canvas

This canvas is the canvas containing the definitions-edit. It is initially the top half of the drscheme window.

This canvas defaults to a drscheme:unit:definitions-canvas% object, but if you change the drscheme:get/extend:extend-definitions-canvas parameter, it will use the class in the parameter to create the canvas.

• (ivar a-drscheme:unit:frame definitions-canvas) -> a drscheme:unit:definitions-canvas% object