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17 lines
805 B
Racket
17 lines
805 B
Racket
#lang br
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(require racket/draw)
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(provide make-jsonic-buttons)
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(define make-jsonic-buttons
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(list (let ([label "Insert expression"]
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[bitmap (make-object bitmap% 16 16)]
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[callback (λ (drr-frame)
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(define drr-editor (send drr-frame get-definitions-text))
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(define block-string "@$ $@")
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(send drr-editor begin-edit-sequence)
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(send drr-editor insert block-string)
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(send drr-editor end-edit-sequence)
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(define pos (send drr-editor get-end-position))
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(send drr-editor set-position (- pos (/ (string-length block-string) 2))))]
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[number 98])
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(list label bitmap callback number)))) |