How to hide or disable butons (minimize, maximize, close) MainWindow

California

Hello, I would like to avoid pressing the minimize, maximize, and exit buttons. Is it possible to hide these buttons so that they are invisible or disable them from responding to touch? A simple test code is attached for demonstration. The application runs on Raspberry Pi-4, Debian Trixie.

# -*- coding: utf-8 -*-

# Form implementation generated from reading ui file 'test.ui'
#
# Created by: PyQt5 UI code generator 5.15.9
#
# WARNING: Any manual changes made to this file will be lost when pyuic5 is
# run again.  Do not edit this file unless you know what you are doing.

# msgBox.setWindowFlags(Qt::CustomizeWindowHint | Qt::WindowTitleHint)
# setWindowFlag(QtCore.Qt.WindowCloseButtonHint, False)

from PyQt5 import QtCore, QtGui, QtWidgets


class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(800, 233)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        MainWindow.setCentralWidget(self.centralwidget)
        self.statusbar = QtWidgets.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)

        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))


if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    MainWindow = QtWidgets.QMainWindow()
    ui = Ui_MainWindow()
    ui.setupUi(MainWindow)
    MainWindow.show()
    sys.exit(app.exec_())

With best regards, Vlado

JonB

@California said in How to hide or disable butons (minimize, maximize, close) MainWindow:

setWindowFlag(QtCore.Qt.WindowCloseButtonHint, False)

Like this on the main window. Some suitable combination of the flags shown in class WindowType, scroll down to "The CustomizeWindowHint flag" table.

California

@JonB said in How to hide or disable butons (minimize, maximize, close) MainWindow:

setWindowFlag(QtCore.Qt.WindowCloseButtonHint, False)

I found it, but I just don't know how to use it. I got an error:

NameError: name 'setWindowFlag' is not defined

Would you be so kind to describe how to use this function properly in code posted above!

JonB

@California
You have a bunch of MainWindow.set...() method calls. So did you similarly do MainWindow.setWindowFlag(...), e.g. MainWindow.setWindowFlag(QtCore.Qt.WindowCloseButtonHint, False) and for the other flags you want to clear?

California

@JonB I put

MainWindow.setWindowFlag(QtCore.Qt.WindowCloseButtonHint, False)

in to diferent places in code, this time no error appeared, however Close Button is stil visable and click to it makes MainWindow dissapeared...

# -*- coding: utf-8 -*-

# Form implementation generated from reading ui file 'test.ui'
#
# Created by: PyQt5 UI code generator 5.15.9
#
# WARNING: Any manual changes made to this file will be lost when pyuic5 is
# run again.  Do not edit this file unless you know what you are doing.

from PyQt5 import QtCore, QtGui, QtWidgets


class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(800, 233)
        MainWindow.setWindowFlag(QtCore.Qt.WindowCloseButtonHint, False)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        MainWindow.setCentralWidget(self.centralwidget)
        self.statusbar = QtWidgets.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)
        #MainWindow.setWindowFlag(QtCore.Qt.WindowCloseButtonHint, False)
        

        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))


if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    MainWindow = QtWidgets.QMainWindow()
    #MainWindow.setWindowFlag(QtCore.Qt.WindowCloseButtonHint, False)
    ui = Ui_MainWindow()
    ui.setupUi(MainWindow)
    MainWindow.show()
    sys.exit(app.exec_())

JonB

@California
I gave you the link to the PySide page describing the window flags. Did you read it? Please do so when asking questions/seeking to understand. Did you act on it stating:

The CustomizeWindowHint flag is used to enable customization of the window controls. This flag must be set to allow the WindowTitleHint, WindowSystemMenuHint, WindowMinimizeButtonHint, WindowMaximizeButtonHint and WindowCloseButtonHint flags to be changed.

California

@JonB I did read provided site and I changed command as suggested. As said:

Qt.WindowCloseButtonHint … Adds a close button. On some platforms this implies Qt::WindowSystemMenuHint for it to work.

in my case:

MainWindow.setWindowFlag(QtCore.Qt.WindowSystemMenuHint, False)

but stil the same result. No error, Close button in function. I am not sure what I am missing here...

JonB

@California
That's is not really or necessarily what it says. I would try:

MainWindow.setWindowFlag(QtCore.Qt.CustomizeWindowHint, True)  # This one is important
MainWindow.setWindowFlag(QtCore.Qt.WindowMinimizeButtonHint, False)
MainWindow.setWindowFlag(QtCore.Qt.WindowMaximizeButtonHint, False)
MainWindow.setWindowFlag(QtCore.Qt.WindowCloseButtonHint, False)

MainWindow.setWindowFlag(QtCore.Qt.WindowSystemMenuHint, False)  # Don't know about this one

Start with: do any of these influence the window? If not, are you running Xorg/other or Wayland?

California

@JonB I am on Wayland. Tried diferent options as you can see in code below, none of them worked.

# -*- coding: utf-8 -*-

# Form implementation generated from reading ui file 'test.ui'
#
# Created by: PyQt5 UI code generator 5.15.9
# WindowSystemMenuHint
# WARNING: Any manual changes made to this file will be lost when pyuic5 is
# run again.  Do not edit this file unless you know what you are doing.

from PyQt5 import QtCore, QtGui, QtWidgets

# setWindowFlags(Qt::Window | Qt::WindowTitleHint | Qt::CustomizeWindowHint);
class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(800, 233)
        """    
        MainWindow.setWindowFlag(QtCore.Qt.CustomizeWindowHint, True)  # This one is important
        MainWindow.setWindowFlag(QtCore.Qt.WindowMinimizeButtonHint, False)
        MainWindow.setWindowFlag(QtCore.Qt.WindowMaximizeButtonHint, False)
        MainWindow.setWindowFlag(QtCore.Qt.WindowCloseButtonHint, False)
        #MainWindow.setWindowFlag(QtCore.Qt.WindowSystemMenuHint, False)  # Don't know about this one
        MainWindow.setWindowFlag(QtCore.Qt.WindowSystemMenuHint, True)  # Don't know about this one
        """
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        MainWindow.setCentralWidget(self.centralwidget)
        self.statusbar = QtWidgets.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)
        """
        MainWindow.setWindowFlag(QtCore.Qt.CustomizeWindowHint, True)  # This one is important
        MainWindow.setWindowFlag(QtCore.Qt.WindowMinimizeButtonHint, False)
        MainWindow.setWindowFlag(QtCore.Qt.WindowMaximizeButtonHint, False)
        MainWindow.setWindowFlag(QtCore.Qt.WindowCloseButtonHint, False)
        #MainWindow.setWindowFlag(QtCore.Qt.WindowSystemMenuHint, False)  # Don't know about this one
        MainWindow.setWindowFlag(QtCore.Qt.WindowSystemMenuHint, True)  # Don't know about this one
        """

        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))


if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    MainWindow = QtWidgets.QMainWindow()
    #"""
    MainWindow.setWindowFlag(QtCore.Qt.CustomizeWindowHint, True)  # This one is important
    MainWindow.setWindowFlag(QtCore.Qt.WindowMinimizeButtonHint, False)
    MainWindow.setWindowFlag(QtCore.Qt.WindowMaximizeButtonHint, False)
    MainWindow.setWindowFlag(QtCore.Qt.WindowCloseButtonHint, False)
    #MainWindow.setWindowFlag(QtCore.Qt.WindowSystemMenuHint, False)  # Don't know about this one
    MainWindow.setWindowFlag(QtCore.Qt.WindowSystemMenuHint, True)  # Don't know about this one
    #"""
    ui = Ui_MainWindow()
    ui.setupUi(MainWindow)
    MainWindow.show()
    sys.exit(app.exec_())

Thanks for helping, after one hour I will not have an acces to PC for few days. In Sunday back again.
With best regards, Vlado

JonB

@California said in How to hide or disable butons (minimize, maximize, close) MainWindow:

I am on Wayland.

Then you will not be able to alter the window furniture, position and other things. And you are not intended to.

California

@JonB Well, tested on X11 as well, same result ...

Christian Ehrlicher

If those flags are honored or not depends on the window manager: " Some of these flags depend on whether the underlying window manager supports them."