On 10/03/2010 06:35 AM, 김태윤 wrote:
> since wav file is too big, is there any way I can play ogg or mp3 file
> in scheme?
That shouldn't be too much trouble. There are many sound playing
libraries and programs that can handle both Vorbis and MP3. I would
recommend you do something like this:
(module file-player racket/base
(require racket/system)
(define player (find-executable-path "xmms"))
(define (play file)
(system* player (if (path? file) (path->string file) file)))
(provide play))
Adjust it for your particular ogg and mp3 player of course.
> if there are more useful tip for make a program fun (such as caret
> moving) could you let me know that as well?
Caret moving? You can... do that for your own windows?
(module caret-mover racket/base
(require racket/gui/base
racket/class)
(define frame (new frame% (label "caret mover")
(width 300) (height 50)))
(define text (new text%))
(define canvas (new editor-canvas% (parent frame) (editor text)))
(send text insert "Why the heck am I doing this...")
(send frame show #t)
(thread
(λ ()
(let loop ()
(send text move-position 'left)
(sleep/yield 0.5)
(loop)))))
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