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

Bug

Operating System

Windows 10 and Windows 11

PySimpleGUI Port (tkinter, Qt, Wx, Web)

Qt

Versions

Python version (sg.sys.version)

'3.12.3 (tags/v3.12.3:f6650f9, Apr 9 2024, 14:05:25) [MSC v.1938 64 bit (AMD64)]'

PySimpleGUI Version (sg.__version__)

'5.0.0'
PySimpleGUI 5.0.4
PySimpleGUIQt 5.0.0

GUI Version (tkinter (sg.tclversion_detailed), PySide2, WxPython, Remi)

PySide6 6.7.0
PySide6_Addons 6.7.0
PySide6_Essentials 6.7.0

Priority Support Code (Commercial Users)

Your Experience In Months or Years (optional)

Years Python programming experience:
1

Years Programming experience overall:
30+

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]

• [X ] Searched main docs for your problem PySimpleGUI Documenation
• X ] Looked for Demo Programs that are similar to your goal. It is recommend you use the Demo Browser! Demo Programs
• [X ] 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 [email protected]

Detailed Description

When trying to change values of checkboxes programatically, I get an error stating that Read or Finalize must be called first. As can be seen below I use "Finalize=True" when creating window, and Read has been called (i.e. the layout and window has been instantiated). I get the error dialogue once for each checkbox, but after clicking the error button the action of checking/unchecing the checkbox has actually been completed correctly.

c:\xxxx\Python\Python312\Lib\site-packages\PySimpleGUIQt\PySimpleGUIQt.py:562: UserWarning: You cannot Update element with key = test2 until the window has been Read or Finalized
warnings.warn('You cannot Update element with key = {} until the window has been Read or Finalized'.format(self.Key), UserWarning)

Code To Duplicate

A short program that isolates and demonstrates the problem (Do not paste your massive program, but instead 10-20 lines that clearly show the problem)

This pre-formatted code block is all set for you to paste in your bit of code:

import PySimpleGUIQt as psg

if __name__ == '__main__':
    
    TRANS_IDX = ['test1', 'test2']

    layout = [  [psg.Checkbox('Testbutton', key='test1')],
                [psg.Checkbox('Testbutton', key='test2')],
                [psg.Button('Select all', key='-sel-', size_px=(110,25)),
                 psg.Button('Deselect all', key='-desel-', size_px=(110,25))]]

    window = psg.Window('Checkbox test', layout, finalize=True)

    while (True):
        event, values = window.read(timeout=1000)
                    
        match (event):
            case '-sel-':
                for tr in TRANS_IDX: 
                    window[tr].update(value=True) # type: psg.Checkbox()
            case '-desel-':
                for tr in TRANS_IDX:
                   window[tr].update(value=False)  # type: psg.Checkbox()

Screenshot, Sketch, or Drawing

Watcha Makin?

If you care to share something about your project, it would be awesome to hear what you're building.
Building a utility to download blobs from an Azure storage account. Need the checkboxes to select, which blob folders (transaction types) to download. The above example is a subset of code illustrating my problem, which with the above simplified excerpt is identical to what I experience in the actual utility.