How to subclass QMessageBox and add a progress bar in PySide

Question

I'm rather new to PySide, and Qt in general. I want to add a QProgressBar to a QMessageBox where the buttons would usually be. I'm hoping that there's some way to subclass QMessageBox and change it's layout, but I've never done a Qt layout in code, I've done everything with Qt Designer and pyside-uic.

I've created a concept in Qt Designer, I'd like to have something similar to this done by sub-classing QMessageBox. I've looked at QProgressDialog, but it's too inflexible. I'd like to be able to use the QMessageBox Icon enum for the icon.

Concept

You can just create new form with label, icon and progress bar. Why do you want to subclass QMessageBox? — Pavel Strakhov, Nov 11 '13 at 23:54
I want the layout of QMessageBox, and the ability to use the QMessageBox Icon enums. — chyyran, Nov 12 '13 at 03:23

score 9 · Accepted Answer · answered Nov 14 '13 at 16:36

QMessageBox uses a QGridLayout. So, you can add your QProgressBar to its layout:

msgBox = QMessageBox( QMessageBox.Warning, "My title", "My text.", QMessageBox.NoButton )

# Get the layout
l = msgBox.layout()

# Hide the default button
l.itemAtPosition( l.rowCount() - 1, 0 ).widget().hide()

progress = QProgressBar()

# Add the progress bar at the bottom (last row + 1) and first column with column span
l.addWidget(progress,l.rowCount(), 0, 1, l.columnCount(), Qt.AlignCenter )

msgBox.show()

You can also remove the buttons msgBox.setStandardButtons( QMessageBox.NoButton ). But the close button will be disabled, too...

score 0 · Answer 2 · answered Nov 20 '13 at 15:49

you can always add your own layout to the QProgressDialog.

layout = QtGui.QHBoxLayout()
self.setLayout(layout)

# layout.setContentsMargins(0, 0, 0, 0)
layout.setAlignment(QtCore.Qt.AlignTop)

icon = QtGui.QApplication.style().standardIcon(QtGui.QStyle.SP_FileIcon)
self.label = QtGui.QLabel()
self.label.setPixmap(icon.pixmap(16, 16))
self.label2 = QtGui.QLabel("My Label")
layout.addWidget(self.label)
layout.addWidget(self.label2)

How to subclass QMessageBox and add a progress bar in PySide

2 Answers2