Wayne Watson schrieb:
Sometime ago, one of my posts brought a response brief exchange on
event handling*. Where might I find more about event handling with
respect to the keyboard, and particularly with a mouse. In the latter
case, I'm interested in finding the pixel position of the mouse on a
canvas.
Hi Wayne,
there is some (limited) support of event handling in the turtle module
of Python 2.6
Example:
>>> from turtle import *
>>> reset()
>>> def printpos(x,y):
print x,y
>>> onscreenclick(printpos)
>>> -284.0 80.0 # result of clicking
the turtle module's playground is a Tkinter Canvas.
Don't know if that fit's to your needs in some way.
The module runs as is also with Python 2.5 and yuo can download
it separately from here:
http://svn.python.org/view/python/trunk/Lib/lib-tk/
More information on:
http://docs.python.org/library/turtle.html#module-turtle
Examples are in the source distribution (along with a demoViewer program,
which also serves as an example on how to embed turtle graphics into a
Tkinter application. You can download it separately from here:
http://svn.python.org/view/python/trunk/Demo/turtle/
If you have enough time and if you are interested in it, here is a PyCon
talk
on the turtle module, which - as 6th "way" - contains a section on event
driven
programs followed by two examples of games:
http://blip.tv/file/1947495
Best regards,
Gregor
* I see from Alan Gauld, which refers to his web site. Still I'm
curious about other sources. The few books I have on Python seem to
avoid the subject. Perhaps it goes by another name in Python-ville.
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