On Nov 13, 2010, at 1:31 AM, Dennis Lee Bieber wrote:
> On Fri, 12 Nov 2010 20:48:34 -0500, Brian Blais <bbl...@bryant.edu>
> declaimed the following in gmane.comp.python.general:
>
>> turtle.ondrag(turtle.goto)
>> turtle.pendown()
>>
>>
> I'm not familiar with the turtle module but... would it make more
> sense to drop the pen before dragging the turtle around?
>
> """
> Subsequently, clicking and dragging the Turtle will move it across the
> screen thereby producing handdrawings (if pen is down).
> """
>
> "if pen is down" <===
>
there is no change by changing the order, but I didn't expect one. since
ondrag is binding a callback, which is only called when the event happens, I
figure that the pen has to be down when the callback happens, not when the
binding occurs. since the pen is down (and never lifted), when I start
dragging the mouse around after that it should work...but doesn't seem to.
thanks,
bb
--
Brian Blais
bbl...@bryant.edu
http://web.bryant.edu/~bblais
http://bblais.blogspot.com/
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