implement additional function to event - Python

Question

How can I add an additional function to take place when an item is expanded? Below I've attempted to re-implement the expandItem event but it doesn't appear to do anything. Why is that?

# QTreeWidgets
# ------------------------------------------------------------------------------
class FactionsTreeWidget( QtGui.QTreeWidget ):
    def __init__(self, parent=None):
        QtGui.QTreeWidget.__init__(self, parent)
        self.setVerticalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOn)
        self.setSelectionMode(QtGui.QAbstractItemView.ExtendedSelection)
        self.setItemsExpandable(True)
        self.setAlternatingRowColors(True)

    def itemExpanded( self, *args, **kwargs ):
        res = super( self, my_class ).itemExpanded( *args, **kwargs )
        print "expanding stuff..."
        return res

Mel · Accepted Answer · 2015-12-04 15:11:25Z

2

itemExpanded is a signal emitted by QTreeWidget, not one of it's method. So you just need to connect this signal to your function.

    ...
    self.itemExpanded.connect(self.onItemExpanded)

def onItemExpanded(self,item):
    print("stuff")

answered Dec 4, 2015 at 15:11

Mel

6,10510 gold badges40 silver badges42 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

JokerMartini Over a year ago

thank you. im not super familiar with this language so i appreciate the help and explanation.

Collectives™ on Stack Overflow

implement additional function to event - Python

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related