How to control QGroupBox resizing

Question

The code below creates a single dialog with GroupBox() resizing in sync with the dialog. This is default resizing policy for GroupBox. How to change this policy so GroupBox occupies as little space (area) as possible and never expands vertically. How to achieve it?

from PyQt4 import QtCore, QtGui
app = QtGui.QApplication([])

panel=QtGui.QDialog()
panel.setLayout(QtGui.QVBoxLayout())

groupbox = QtGui.QGroupBox('Group Box')
groupbox.setLayout(QtGui.QVBoxLayout())
panel.layout().addWidget(groupbox)

for i in range(3):
    row = QtGui.QHBoxLayout()
    row.addWidget(QtGui.QLabel('Label'))
    row.addWidget(QtGui.QLineEdit())
    row.addWidget(QtGui.QPushButton('Push Button'))
    groupbox.layout().addLayout(row)

panel.layout().addWidget(QtGui.QPushButton('Confirm'))

panel.show()
app.exec_()

Try something like `panel.layout().addWidget(QtGui.QSpacerItem(20, 40, QtGui.QSizePolicy.Minimum, QSizePolicy.Expanding)` right before the confirm button to add a vertical spacer. — 101, Jan 21 '17 at 07:19

score 3 · Accepted Answer · answered Jan 25 '17 at 04:29

The simplest one by ekhumoro:

from PyQt4 import QtCore, QtGui
app = QtGui.QApplication([])

panel=QtGui.QDialog()
panel.setLayout(QtGui.QVBoxLayout())

groupbox = QtGui.QGroupBox('Group Box')
groupbox.setLayout(QtGui.QVBoxLayout())
panel.layout().addWidget(groupbox)
panel.layout().addStretch()

for i in range(3):
    row = QtGui.QHBoxLayout()
    row.addWidget(QtGui.QLabel('Label'))
    row.addWidget(QtGui.QLineEdit())
    row.addWidget(QtGui.QPushButton('Push Button'))
    groupbox.layout().addLayout(row)

panel.layout().addWidget(QtGui.QPushButton('Confirm'))

panel.show()
app.exec_()

The second approach works as well after we replace .addWidget with .addItem:

from PyQt4 import QtCore, QtGui
app = QtGui.QApplication([])

panel=QtGui.QDialog()
panel.setLayout(QtGui.QVBoxLayout())

groupbox = QtGui.QGroupBox('Group Box')
groupbox.setLayout(QtGui.QVBoxLayout())
panel.layout().addWidget(groupbox)
panel.layout().addItem(QtGui.QSpacerItem(20, 40, QtGui.QSizePolicy.Minimum, QtGui.QSizePolicy.Expanding))
for i in range(3):
    row = QtGui.QHBoxLayout()
    row.addWidget(QtGui.QLabel('Label'))
    row.addWidget(QtGui.QLineEdit())
    row.addWidget(QtGui.QPushButton('Push Button'))
    groupbox.layout().addLayout(row)

panel.layout().addWidget(QtGui.QPushButton('Confirm'))

panel.show()
app.exec_()

How to control QGroupBox resizing

1 Answers1