QListWidget adjust size to content

Question

Is it possible to adjust QListWidget height and width to it's content?

sizeHint() always returns 256, 192 no matter what its content is.
QListWidgetItem's sizeHint() returns -1, -1, so I can not get content width.

Problem the same as here - http://www.qtcentre.org/threads/31787-QListWidget-width , but there is no solution.

import sys from PyQt4.QtGui import *  class MainWindow(QWidget):     def __init__(self, parent=None):         QWidget.__init__(self, parent)          list = QListWidget()         list.addItem('111111111111111')          vbox = QVBoxLayout(self)         vbox.addWidget(list)  app = QApplication(sys.argv) myapp = MainWindow() myapp.show() sys.exit(app.exec_()) 

Answer 1

sizeHint() always returns 256, 192 no matter what its content is.

Thats because this is the size of the QListWidget, the viewport, not the items. sizeHintForColumn() will give you the max size over all items, so you can resize the widget like this:

list.setMinimumWidth(list.sizeHintForColumn(0)) 

If you don't want to force minimum width, then subclass and provide this as the size hint instead. E.g.:

class ListWidget(QListWidget):   def sizeHint(self):     s = QSize()     s.setHeight(super(ListWidget,self).sizeHint().height())     s.setWidth(self.sizeHintForColumn(0))     return s 

Answer 2

Using takois answer I played around with the sizeHintForColumn or sizeHintForRow and found that you have to add slightly larger numbers, because there might be some style dependent margins still. ekhumoros comment then put me on the right track.

In short the full size of the list widget is:

list.sizeHintForColumn(0) + 2 * list.frameWidth() list.sizeHintForRow(0) * list.count() + 2 * list.frameWidth()) 

According to the comment by Violet it may not work in Qt 5.

Also be aware that setting the size to the content, you don't need scrollbars, so I turn them off.

My full example for a QListWidget ajusted to its content size:

from PySide import QtGui, QtCore  app = QtGui.QApplication([])  window = QtGui.QWidget() layout = QtGui.QVBoxLayout(window) list = QtGui.QListWidget() list.addItems(['Winnie Puh', 'Monday', 'Tuesday', 'Minnesota', 'Dracula Calista Flockhart Meningitis', 'Once', '123345', 'Fin']) list.setHorizontalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff) list.setVerticalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff) list.setFixedSize(list.sizeHintForColumn(0) + 2 * list.frameWidth(), list.sizeHintForRow(0) * list.count() + 2 * list.frameWidth()) layout.addWidget(list)  window.show()  app.exec_()