[Tutor] TKinter and IDLE problem

[Dick Moores]

That works. Thanks!

Dick Moores
rdm@rcblue.com

At 10:21 12/10/2002 +0100, you wrote:
 >
 >AFIS, this is a well known problem when using
 >IDLE with Tkinter. IT has it's origin in the fact,
 >that IDLE itself is a Tkinter-App, so there is
 >already an active mainloop there.
 >
 >Solution: if you use or develop TKinter-programs
 >with IDLE, comment out (or delete)  the
 >root.mainloop() statement.
 >
 >However, if you want to run your app without
 >IDLE you have to uncomment or insert it again.
 >
 >A nice idiom, to accomplish this is as follows below:
 >
 >
 >Dick Moores schrieb:
 >
 >>
 >>
 >> What am I doing wrong?
 >>
 >> Thanks,
 >>
 >> Dick Moores
 >> rdm@rcblue.com
 >>
 >> ========================
 >> # File: hello1.py
 >>
 >> from Tkinter import *
 >
 >  usingIDLE = 1   # True
 >
 >  # code of your app
 >
 >>
 >> root = Tk()
 >>
 >> w = Label(root, text="Hello, world!")
 >> w.pack()
 >
 >  if not usingIDLE:
 >      root.mainloop()
 >
 ># you turn mainloop on by setting
 ># usingIDLE = 0