Struggling with setting column sizes

[Parthe]

Hi,

I'm very new to Qt (like, this is my second day of coding with it) so I apologise if I'm missing something basic here, or doing something wrong.

Using Qt6 I have a window I created from the QMainWindow class.
In it I have a VBoxLayout in which I am adding a table created from QTableView.

class myMainWindow(QMainWindow):
    def __init__(self):
        # Call the super __init__() function to set up the window via Qt.
        super().__init__()

        self.setWindowTitle('This is a test window')
        self.layout = QVBoxLayout()
        self.mainTable = QTableView()
        self.layout.addWidget(self.mainTable)
        self.widget = QWidget()
        self.widget.setLayout(self.layout)
        self.setCentralWidget(self.widget)

I then create a table based on TableModel, passing in a list of lists. This creates the table data correctly.

        table_data=[
[ 'Mr', 'Joe', 'Baker', 'Mr Baker was a well-known cooked-dough provide in town.', '1944-12-15']
[ 'Mrs', 'Josephine', 'Bloggs', 'Mrs Bloggs (Jo to her friends) was a regular church goer and was held in high estimation in the village', '1949-06-24']
[ 'Mstr, 'Harold', 'Bloggs', 'Young Master Bloggs was a tearabout in his youth, but grew up to join in his fathers business', '1965-05-14']
        ]
        # Store the data in the table
        self.model = TableModel(table_data)

I then set the model of the QTableView (mainTable) to the TableModel and display the window.

        self.mainTable.setModel(self.model)

        window.show()  # IMPORTANT!!!!! Windows are hidden by default.

        # Start the event loop.
        app.exec()

The problem is that I cannot work out how to set the column widths automatically. Ideally I want all columns to fit to the width of the data apart from column 4 (the description) which can be overlapped if the main window is too narrow.

From the documentation I've read I should be able to do this using the QHeaderView.Stretch and QHeaderView. ResizeToContents attributes, but I cannot find out where or how I should set these.

Can you help please?

[friedemannkleint]

You can call .QTableView.resizeColumnToContents(column), QTableView.resizeColumnsToContents() ( see https://doc.qt.io/qtforpython-6/PySide6/QtWidgets/QTableView.html#PySide6.QtWidgets.PySide6.QtWidgets.QTableView.resizeColumnToContents ) .

[Parthe]

Excellent! Thanks @friedemannkleint , that did the job nicely.

For the sake of completeness and to help others who might have this issue in the future, I modified my code as follows.

    self.mainTable.setModel(self.model)

    # Now that the table has the data and the view is set to the table,
    # resize the columns correctly. Ignore column 3 since the contents
    # can be very large, we want that to overlap.
    for r in range(self.model.rowCount()):
        if r == 2:
            continue

        self.mainTable.resizeColumnToContents(r)

Next I need to work on setting the resize settings to the columns to negate the need for this, but that's a different problem.