CODEWITHSUNDEEP
pythontkinter
SkyNT
SkyNT

Reputation: 803

Tkinter auto-trigger callback continuously

I have a simple tkinter callback that scrubs forward through a video when a key is pressed or held down.

root.bind('<Right>', callback_scrubFwd)
root.mainloop()

This plays back the video very nicely. How can I trigger this callback to be called continuously, which is what happens when the key is held down by the user, only automatically? I've tried ordinary while loops or nested/timed function calls but these lock up the interface.

Upvotes: 0

Views: 308

Answers (1)

Bryan Oakley
Bryan Oakley

Reputation: 386342

If you want a function to run continuously, at the end of the function you can call after to put another invocation of the callback on the event queue:

def callback_scrubFwd():
    <your code here>
    root.after(1000, callback_scrubFwd)

If you want to be able to stop the auto-repeat you can add a flag that you check for each time it is called:

def callback_scrubFwd():
    <your code here>
    if do_autorepeat:
        root.after(1000, callback_scrubFwd)

Upvotes: 2

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