[FIXED] Center OK button in QDialog

Issue

Is it possible to center the OK button in a QDialog?

class CustomDialog(QDialog):
    def __init__(self, text, parent):
        super().__init__(parent)

        self.setFixedSize(200, 100)
        self.setWindowFlags(Qt.WindowStaysOnTopHint | Qt.WindowTitleHint | Qt.Window
                                         | Qt.CustomizeWindowHint)
        QBtn = QDialogButtonBox.Ok

        self.buttonBox = QDialogButtonBox(QBtn)
        self.buttonBox.accepted.connect(self.accept)
        self.buttonBox.rejected.connect(self.reject)

        self.layout = QVBoxLayout()
        message = QLabel(text)
        self.layout.addWidget(message)
        self.layout.addWidget(self.buttonBox)
        self.setLayout(self.layout)

The dialog shows only the OK button and I would like it to be centerd instead of right

Solution

The simplest way is to use the centerButtons property:

    self.buttonBox.setCenterButtons(True)

Also consider that by default widgets are added to a layout by trying to fill all the available space in the layout "cell". Specifying the alignment results in aligning the widget by using its size hint as maximum space.

So, an alternative is to change to:

    self.layout.addWidget(self.buttonBox, alignment=Qt.AlignCenter)

Answered By - musicamante