Simple problem with GUI!!

[mohan]

Hello Guys,

I am a beginner with Python programming and would like to implement
some GUI functionalities along with my main work. So I was trying to
implement one basic program (available from books).
Here is the code,

############### #############
import Tkinter

TopLevelWindowO bj = Tkinter.Tk() # Creating a root window
QuitObj = Tkinter.Button( TopLevelWindowO bj, text = "QUIT", command =
TopLevelWindowO bj.quit) # Creating a Button
QuitObj.pack() # Positioning the button
Tkinter.mainloo p()
############### ##############

So, this is a code to display a window with a "QUIT" button and by
clickign the button the entire window is closed. When I execute this
program, the window does not close down but the window is completely
disabled and after a few seconds I get the following message in a
message window,

*************** *************** *************** *************** **************
Message box name - Microsoft Visual C++ Runtime Library

Runtime Error!

program...\Pyth on22\core\lib\s ite-packages\Python win\Pythonwin.e xe

This application has requested the Runtime to terminate it in an
unusual way.
Please contact the application's support team for more information.

*************** *************** *************** *************** *************** *********
At the end I had to close down my entire python compiler. I am using
Python compiler with following specs in Windows XP OS.

Pythonwin - Python IDE and GUI Framework for Windows.
PythonWin 2.2.1 (#34, Feb 25 2003, 11:29:09) [MSC 32 bit (Intel)] on
win32.
Portions Copyright 1994-2001 Mark Hammond

Please let me know why is this happening and also if I am missing
something in the way of programming.

Thanks in advance.

Cheers,
Mohan.

[Fredrik Lundh]

Re: Simple problem with GUI!!

"mohan" wrote:

At the end I had to close down my entire python compiler. I am using
Python compiler with following specs in Windows XP OS.
>
Pythonwin - Python IDE and GUI Framework for Windows.
PythonWin 2.2.1 (#34, Feb 25 2003, 11:29:09) [MSC 32 bit (Intel)] on
win32.
Portions Copyright 1994-2001 Mark Hammond
>
Please let me know why is this happening and also if I am missing
something in the way of programming.

the PythonWin IDE doesn't work properly when you're running programs that
does their own Windows event handling. this is a problem with PythonWin, not
with Tkinter or your program. to solve this, you can either

1) check if you can make PythonWin run the program in a separate process

2) explicitly run the program in its own process (using "python.exe " or "pythonw.ex e"),
from the command line.

3) switch to an IDE that runs Python code in a separate process (such as IDLE,
Wing, and most other modern IDE:s).

</F>