21 lines
536 B
Racket
21 lines
536 B
Racket
#lang racket/base
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(require racket/gui/base racket/class)
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(provide bitmap-message%)
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(define bitmap-message%
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(class canvas%
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(inherit min-width min-height get-dc refresh)
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(define bm #f)
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(define/override (on-paint)
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(when bm
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(let ([dc (get-dc)])
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(send dc draw-bitmap bm 0 0))))
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(define/public (set-bm b)
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(set! bm b)
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(min-width (send bm get-width))
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(min-height (send bm get-height))
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(refresh))
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(super-new (stretchable-width #f)
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(stretchable-height #f))))
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