The OS here is Mac OS 10.6.8, running Racket 5.3.1 - so I guess its an issue with the OpenGL implementation. Thanks for taking a look, though :)
On 12.02.13 19:37, Michael Wilber wrote:
Your OpenGL example still doesn't flash for me when I move the mouse over it, on 64-bit linux. It does, however, flash when I change window focus... for some reason? What OS are you using? Philipp Dikmann <[email protected]> writes:I'm sorry, I should have been more specific – it happens when using a gl-enabled canvas (example below). I hope that does not turn it into a dragons' den? ;) Philipp #lang racket/gui (require sgl) (define c% (class canvas% (inherit with-gl-context swap-gl-buffers) (define/override (on-paint) (with-gl-context (lambda () (gl-clear-color (random) (random) (random) 1) (gl-clear 'color-buffer-bit) (swap-gl-buffers) (gl-flush)))) (super-new (style '(gl no-autoclear))))) (define f (new frame% [label ""] [width 100] [height 100])) (define c (new c% [parent f])) (send f show #t) On 11.02.13 22:39, Robby Findler wrote:I don't think it does that. The program below, at least for me, doesn't do crazy colors when I move the mouse around (it does when resizing, tho). Robby #lang racket/gui (define c% (class canvas% (inherit get-client-size get-dc) (define/override (on-paint) (define-values (w h) (get-client-size)) (define dc (get-dc)) (define c (make-object color% (random 255) (random 255) (random 255))) (send dc set-brush c 'solid) (send dc set-pen "black" 1 'transparent) (send dc draw-ellipse 0 0 w h)) (super-new))) (define f (new frame% [label ""] [width 100] [height 100])) (define c (new c% [parent f])) (send f show #t) On Mon, Feb 11, 2013 at 9:41 AM, Philipp Dikmann <[email protected] <mailto:[email protected]>> wrote: It appears that the GUI canvas% refreshes itself whenever it receives a mouse-event%. I intend to refresh the canvas at a steady pace (using a timer%) and independently of any mouse-events instead. Is there a reasonable way to suppress the default behavior? Thanks for your time, Philipp ____________________ Racket Users list: http://lists.racket-lang.org/users____________________ Racket Users list: http://lists.racket-lang.org/users
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