thank you for your replying
maybe I have not enough experience to understand your advice easily
now I got it what the transparent option is.
I tried several change but nothing changed
could you be more specify?
I was thought I need to set a style option on circle but draw-bitmap
doesn't have such a transparent option.
and I tried following modification but does nothing
(new select% (parent f) (min-width (image-width chipset)) (min-height
(image-height chipset)) )
to
(new select% (parent f) (min-width (image-width chipset)) (min-height
(image-height chipset)) (style '(transparent)))
thanks in advanced
, Mathew Kurian <bluejamesb...@gmail.com>님이 작성:
Greetings,
According to Racket Docs:
----Just set style-----
'transparent - the canvas is automatically "erased" before an update
using it's parent window's background; the result is undefined if this
flag is combined with 'no-autoclear
Hopefully that helps.
Sincerely,
Mathew Kurian
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Mathew Kurian
Seven Lakes High School
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