close bottom window of QMainWindow

C.J. Mejias

Hi, I am new in python and pyside6.

I have the following problem:
Using python 3.10 (and pyside 3.9) with this statement:
self.setWindowFlags(self.windowFlags() & ~Qt.WindowMinMaxButtonsHint)
(self is a QMainwindow object).

The window is open correctly, showing just the close button.

When I use python 3.14.2, with pyside 6.10., the window appear with just close botton, but the botton appear disabled.

How I could enable this botton in this version o pyside.

Thanks...

SGaist

Hi and welcome to devnet,

On which OS are you experiencing this ?
Which version of 6.10 do you have ?

C.J. Mejias

Hi,

Thank you for your reply.

We are working on Windows 11
PySide 6.10.1

SGaist

Can you share a minimal script that shows this behaviour ? That will help people check what is going on.

C.J. Mejias

This code, show a window just with the close button, but the botton appear inactive:

import sys
from PySide6.QtCore import Qt
from PySide6.QtWidgets import QApplication, QMainWindow

class MainWindow(QMainWindow):
def init(self):
super().init()
self.setWindowTitle("Frameless Window Example")
self.resize(400, 200)

    # Set the window flag to remove the default system title bar and border
    #self.setWindowFlags(Qt.WindowType.FramelessWindowHint)  ~Qt.WindowMinMaxButtonsHint
    self.setWindowFlags(self.windowFlags() & ~Qt.WindowMinMaxButtonsHint)

if name == "main":
app = QApplication(sys.argv)
window = MainWindow()
window.show()
sys.exit(app.exec())

C.J. Mejias

Hey Group,
This statement
self.setWindowFlags(self.windowFlags() & ~Qt.WindowMinMaxButtonsHint)
Works fine in pyside 6.9 and python 3.10

BUT not in pyside 6.10 and python 3.14

After read: https://doc.qt.io/qt-6/qtwidgets-widgets-windowflags-example.html

We changed the statement for:
self.setWindowFlags( flags = Qt.Window | Qt.WindowCloseButtonHint)

Problem resolved

The bad news is that we need change all the application, anyway we need migrate to python 3.14

SGaist, thank you for your time....

JonB

@C.J.-Mejias
Given that you say:

self.setWindowFlags(self.windowFlags() & ~Qt.WindowMinMaxButtonsHint)  # does not work
self.setWindowFlags( flags = Qt.Window | Qt.WindowCloseButtonHint)  # does work

I would check before executing the first statement what self.windowFlags() had in it --- did it include Qt.Window and Qt.WindowCloseButtonHint to start with? And for that matter also what it returns after that statement, so that we know what the flags have actually been changed to. All it should be doing is switching off whatever is in Qt.WindowMinMaxButtonsHint, which should not be anything to do with Qt.Window or Qt.WindowCloseButtonHint. You have not yet discovered whether this change in behaviour is to do with Qt, PySide or Python.