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Subject: passing variables to a class - tkinter

markschum opened this issue on Apr 10, 2008 · 9 posts
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markschum ( ) posted Thu, 10 April 2008 at 10:17 AM · edited Mon, 25 November 2024 at 4:52 AM

Hi all,

I have a scipt I am writing that will use tkinter for a user gui. That bits working .

I want to do some stuff BEFORE initiating the gui and I have worked out that it can be done  and that bit is working. It consists of getting a folder path using the dialog and a project name and verifying that the folders have been created and the project name is valid .

The problem I have is getting a variable into the class code.

I have used a global definition for the variable name and I get an error message saying the variable has not been defined in the statement that uses it within the class code .

        self.mystatus = Label(self, relief = GROOVE)
        self.mystatus.config(text = outpath)

Any ideas ?

If I put the dialog inside thhe class it doesnt work :( 
probably to do with setting the parent window

PhilC ( ) posted Thu, 10 April 2008 at 10:26 AM

Have you declared outpath as a global variable at the beginning of the class?

markschum ( ) posted Thu, 10 April 2008 at 10:29 AM

Hi phil,

I sorted it out !

I hadnt declared it Glabal in the function that set it. I wasnt aware that you have to declare a global more than once :(  seems odd to me but its working now .

PhilC ( ) posted Thu, 10 April 2008 at 10:39 AM

Yes that would do it :)

markschum ( ) posted Thu, 10 April 2008 at 11:19 AM

I am rethinking the whole thing now :)
It works , but its ugly , and I dislike ugly user interfaces .

Another think though, sometimes when I start a script that uses tkinter I get multiple windows open of the gui. Is this simply multiple invocations of the script , or is there some issue within tkinter that spawns multiple copies of it ?

PhilC ( ) posted Thu, 10 April 2008 at 11:43 AM

It could be from previous aborted instances of the script still running. When I get that during development of a script I restart Poser.

ockham ( ) posted Sun, 13 April 2008 at 11:15 PM

Tkinter has some sort of hidden memory that preserves its windows
between invocations.  Usually you can just use the menu choice to Reinitialize Python.

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nruddock ( ) posted Mon, 14 April 2008 at 2:09 PM

What your seeing are orphaned toplevel windows.
As ockhams says reinitialising should be enough, but I'd shutdown and restart to be absolultely sure everythings in a normal state.

markschum ( ) posted Mon, 14 April 2008 at 2:19 PM

ok, thats good... with all the crashes I get testing I need to start reinitializing python more :(  or writing better code first :)

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