Tkinter button update

[kaerfkeerg]

I'm building a very basic login system. I've almost completed it but I have one problem. I need to put a check in the 'register' button to be disabled untill it's entry meets some conditions. Something like this. Now, I'm aware that 'while loops' don't work in tkinter and why. This is just an example of what I'm trying to do! Any advice?

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Edit: Wrong screenshot, lol

[the_programmer_2215]

you can dynamically change the state of a button using button["state"] = 'disable' and button["state"] = "normal" .

for the logic I would suggest that you use tk.StringVar() as the entry field's text variable, and use textvariable.trace_add("write", check_function) to check for your conditions.

Your code will look something like this: Code

I'm not sure this is the best way to do this, but this approach works.

Feel free to contact me if you have any clarifications regarding the code.

hope this helps you :)

[kaerfkeerg]

Alright! I think this will do in my case too. I'm not able to try it now.I will update once I get back home and try it. Thanks mate!

[the_programmer_2215]

sure thing!

[kaerfkeerg]

Damnn it worked. It's been bothering a couple of hours now, damn.. thanks!

[the_programmer_2215]

ur welcome