Hello, How can I draw the line (for example) in the canvas object defined as:
(define frame (new frame% [label ""] [width 700] [height 500])) (define canvas (new canvas% [parent frame] ;;;; - call from outside: [paint-callback (lambda (c dc) (send dc draw-line 1 1 10 10) )] )) by calling a function like (define (MyDraw canvas-obj) .... (draw-line 1 1 10 10)) ? -- Best regards, Alex
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