Graphics: Legacy Library

1`` | Basic Commands
2`` | Position Operations
3`` | Color Operations
4`` | Draw, Clear, and Flip Operations
5`` | World Operations
6`` | Miscellaneous Operations
7`` | An Example
8`` | A More Complicated Example
9`` | Protecting Graphics Operations
10`` | Mouse Operations
11`` | Keyboard Operations
12`` | Flushing
13`` | Graphics Library as a Unit

Version: 4.0.2
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### 7`` An Example

(open-graphics)
; nothing appears to happen, but the library is initialized...
(define w (open-viewport "practice" 300 300))
; viewport window appears
((draw-line w) (make-posn 30 30) (make-posn 100 100))
; line appears
(close-viewport w)
; viewport disappears
(close-graphics)
; again, nothing appears to happen, but
; unclosed viewports (if any) would disappear

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