#🔒 Tkinter button widget not changing state

14 messages · Page 1 of 1 (latest)

velvet canyonBOT
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@cunning patrol

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cunning patrol
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"""py
def parsepdf():
submit_button['state'] = 'disabled'

do the parsing

export to excel

root = tk.Tk()
submit_button = ttk.Button( root, text="Submit", command=parsepdf, )
root.mainloop()
"""

crude knoll
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!paste

velvet canyonBOT
#
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cunning patrol
#

I can't its too long and it'll take time to anonmise much of it. Either way, based on my googling I'd like to know how can I do real-time logging on a text widget in a tkinter window while a single function is running?

remote owl
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I don't get it. You told Tkinter to disable the button. Did you tell it to reenable the button afterwards?

crude knoll
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if it all updates after the pdf parsing function is done, then you need a different way to update the UI during that process

#

any call to root.update_idletasks() will update the UI with whatever new information it has to display

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but that would require multiple calls and updates from pdf parsing function

remote owl
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Is ParsePdf() running in a separate thread?

#

Presumably your parse pdf functionality takes a bit of time, and you want to give some indicator to the user to wait. Maybe you don't want your gui to hang while it process. That's fine that you want to disable the button for that duration, but the problem is when you mix synchronous and asynchronous code. Tkinter expects synchronous code so it'll freeze when executing a long function.

Instead the solution is to treat the gui as a shell that launches asynchronous functions. That is to say, it should dispatch and recieve messages.

Have some Tkinter state for the processing state of the parse function. Like Fashoomp suggested, have a separate asynchronus the updates that Tkinter state periodically.

velvet canyonBOT
#
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