On Sun, 6 Nov 2005, Shi Mu wrote:
> frame = c needs to be put before the click function or the lines can
> not be drawn.
Not at all. I have everything after the click function and it works.
This is my version (includes a small addition):
def click(event):
global lastX, lastY
if lastX != "":
c.create_line(lastX,lastY,event.x,event.y,fill="white")
lastX = event.x
lastY = event.y
def newline(event):
global lastX, lastY
lastX=""
lastY=""
from Tkinter import *
lastX=""
lastY=""
root = Tk()
c = Canvas(root, bg='#0e2e0e', height=500, width=1000)
frame = c
c.bind('<Button-1>',click)
c.bind('<Button-3>',newline)
c.pack()
root.mainloop()
> On 11/6/05, Chris F.A. Johnson <[EMAIL PROTECTED]> wrote:
>> On Sun, 6 Nov 2005, Shi Mu wrote:
>>
>>> based on the following rewritten code, why the lines still can not be
>>> drawn? (there is no error report and the canvas appears).
>>
>> It works for me.
>>
>>
>>> from Tkinter import *
>>>
>>> root = Tk()
>>>
>>> c = Canvas(root, bg='#0e2e0e', height=500, width=1000)
>>>
>>> lastX=""
>>> lastY=""
>>> def click(event):
>>> global lastX, lastY
>>> if lastX != "":
>>> c.create_line(lastX,lastY,event.x,event.y,fill="white")
>>> lastX = event.x
>>> lastY = event.y
>>>
>>> frame = c
>>> c.bind('<Button-1>',click)
>>>
>>> c.pack()
>>>
>>> root.mainloop()
--
Chris F.A. Johnson <http://cfaj.freeshell.org>
==================================================================
Shell Scripting Recipes: A Problem-Solution Approach, 2005, Apress
<http://www.torfree.net/~chris/books/cfaj/ssr.html>
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