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doc `has-alpha-channel?' method

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This commit is contained in:
Matthew Flatt 2011-08-21 21:19:50 -06:00
parent e39abf17da
commit fc5fc02e5e
1 changed files with 8 additions and 0 deletions
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8
collects/scribblings/draw/bitmap-class.scrbl
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@ -132,6 +132,14 @@ Gets the width of the bitmap in pixels.
} }
@defmethod[(has-alpha-channel?)
boolean?]{
Returns @racket[#t] if the bitmap has an alpha channel,
@racket[#f] otherwise.
}
@defmethod[(is-color?) @defmethod[(is-color?)
boolean?]{ boolean?]{