How do I properly deal with the QHeaderView of a QTreeWidget (it always displays "1" )

enjoysmath

Here's a screenshot:

In which I tried to change its label:

class HeaderView(QHeaderView):
    def __init__(self):
        super().__init__(Qt.Horizontal)
        #self.setContentsMargins(0, 0, 0, 0)
        self.setLayout(QGridLayout())
        self.layout().addWidget(QLabel("blah"), 0, 0)

class EventsWidget(QDockWidget, Ui_EventsWidget):
    def __init__(self):
        super().__init__()
        super().__init__()
        self.setupUi(self)
    
        self.tree.setHeader(HeaderView())

to no avail. How do you work with QTreeWidgets? How do I "get rid" of the "1"? Ideally I want a vertical list of ">"s (the default) but already expanded, without the "1" there. I also don't want a header of column labels.

enjoysmath

This seems to work and I am still able to add items (they show up):

self.tree.header().setHidden(True)

VRonin

The contents of the QHeaderView are controlled by the model treeWidget.model().setHeaderData(/**/);