CODEWITHSUNDEEP
pythonqtpyqt
JokerMartini
JokerMartini

Reputation: 6147

implement additional function to event - Python

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

Upvotes: 1

Views: 62

Answers (1)

Mel
Mel

Reputation: 6065

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")

Upvotes: 2

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