Type of Issue (Enhancement, Error, Bug, Question)

Bug

Operating System

Alma Linux 9

PySimpleGUI Port (tkinter, Qt, Wx, Web)

tkinter

Versions (NOTE - PSG4 is no longer supported)

Python Interpeter: /usr/bin/python3
Python version: 3.9.18
Platform: Linux
Platform version: ('glibc', '2.34')
Port: PySimpleGUI
tkinter version: 8.6.10
PySimpleGUI version: 5.0.6

Priority Support Code (Commercial License Users)

n/a

Your Experience In Months or Years (optional)

Years Python programming experience: 8

Years Programming experience overall: 9

Have used another Python GUI Framework? (tkinter, Qt, etc) (yes/no is fine) yes

Anything else you think would be helpful?

Troubleshooting

These items may solve your problem. Please check those you've done by changing - [ ] to - [X]

• Searched main docs for your problem PySimpleGUI Documenation
• Looked for Demo Programs that are similar to your goal. It is recommend you use the Demo Browser! Demo Programs
• None of your GUI code was generated by an AI algorithm like GPT
• If not tkinter - looked for Demo Programs for specific port
• For non tkinter - Looked at readme for your specific port if not PySimpleGUI (Qt, WX, Remi)
• Run your program outside of your debugger (from a command line)
• Searched through Issues (open and closed) to see if already reported Issues.PySimpleGUI.com
• Have upgraded to the latest release of PySimpleGUI on PyPI (lastest official version)
• Tried running the Development Build. Your problem may have already been fixed but not released. Check Home Window for release notes and upgrading capability
• For licensing questions please email license@PySimpleGUI.com

Detailed Description

I am running a GUI in Alma Linux 9 that interfaces with several classes I have written, which interface with several external systems. Sometimes, after the GUI has been in use for a bit, the keyboard spontaneously stops working. I have not been able to understand what causes this, nor been able to predict the issue. The keyboard still works in other windows, and I can still interact with the GUI in other ways (pressing buttons, etc.), so I believe it is an issue between PSG and the keyboard. I recently upgraded the operating system of the PC from Centos 7 to Alma 9; in Centos 7 this issue was not observed, and the code has not changed.

In debugging this, I have added enable_events=True to a few of the text boxes and told the GUI to print every event it sees. I have also added the following block which runs a keyboard listener while the GUI event loop runs:

from pynput import keyboard
def on_press(key):
    try:
        print('alphanumeric key {0} pressed'.format(
            key.char))
    except AttributeError:
        print('special key {0} pressed'.format(
            key))

def on_release(key):
    print('{0} released'.format(
        key))
    if key == keyboard.Key.esc:
        # Stop listener                                                                                                                                                                                            
        return False

listener = keyboard.Listener(
    on_press=on_press,
    on_release=on_release)
listener.start()

When the keyboard issue I am discussing occurs, the events generated by buttons and checkboxes still appear in the terminal output, but no events generated by sg.Input fields show up. However, the listener I pasted above still prints all key presses and releases that occur while the GUI window is in focus, but no text is entered into the GUI and no sg.Input events appear.

Code To Duplicate

I have not been able to understand nor isolate the issue, so I am not sure I can give duplication code. I know how helpful that is, but I am running out of ideas for how to solve this.

Thanks for any help you can provide!