tkinter window fails to appear approx 10% of the time on MacOS 12.3+

Abierto
#95,769 18 comentarios 0 reacciones 0 asignados Ver en GitHub

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Evaluación

Dificultad
4/5
Tiempo estimado
3-5 días
Aptitud para principiantes
38/100
Tipo de issue
Error
Claridad
Bastante claro
Estado de actividad
Estancado
Stack tecnológico
macos, python
Área
desktop

Línea de trabajo

Ejecute repetidamente el reproductor de tkinter proporcionado en macOS 12.3.1 con Python 3.10.4 y tkinter 8.6.12, observando si aparece la ventana Toplevel. Investigue la interacción entre las llamadas alpha, withdraw, geometry, update_idletasks y mainloop; el trabajo estará terminado cuando el comportamiento intermitente de la ventana ausente se haya reproducido y explicado, y ya no se produzca en el entorno indicado.

Escrito por el modelo de indexación a partir del texto del issue.

Descripción

OS-mac topic-tkinter type-bug

Bug report

1 in 10 or 15 windows fails to appear when running tkinter on MacOS version 12.3+ and tkinter 8.6.12 using this simplified program:

import tkinter as tk

hmr = tk.Tk()
hmr.attributes('-alpha', 0)
hmr.withdraw()

root = tk.Toplevel(class_='toplevel')
root.attributes('-alpha', 0)

root.title('My Test Title')

frame = tk.Frame(root)
frame.pack(side=tk.TOP, anchor='nw', padx=0, pady=0, expand=False, fill=tk.NONE)
a = tk.Label(frame, text ="Hello World")
a.pack()

root.update_idletasks()
root.geometry("+600+600")
root.update_idletasks()
root.attributes('-alpha', 1)

root.mainloop()

Your environment

MacOS 12.3.1
Python 3.10.4
tkinter 8.6.12

Background

This problem was first reported to the PySimpleGUI project in mid-May. We've been working to find work-arounds and to narrow down the problem as much as possible. Because tkinter 8.6.11 isn't available pre-built on Python.org for 64 bit Macs, it's not been possible to test to see if 8.6.12 is the origin of the problem. While it is an intermittent problem, it's thankfully frequent enough to make duplication possible by running the program several times manually.

I assume it's an 8.6.12 problem as no one has reported the problem on 8.6.11 on any platform. Numerous MacOS users have been running into the problem.

The example code supplied is the most basic, shortest number of steps we've been able to create that perform the same operations that PySimpleGUI uses to build and move the window.

PySimpleGUI's default location for user windows is the center of the screen. So that users do not see the window "jump" from the starting location, the alpha channel is set to zero when the window is created and remains 0 while it's built and moved. Once moved into the final position, the Alpha channel is set to 1 and thus the window appears in the correct location without a visible jump.

Lenguaje dominante
Python
Estrellas
77.2k
Forks
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Merge medio
1 d 9 h
PR fusionados (30 d)
558

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