resizing a QTreeWidget

[drhex]

I tried playing around with sizePolicy and minimumSize, but that did not accomplish anything useful.

Reimplementing sizeHint works better, e.g.:

QSize MyTreeWidget::sizeHint() const
{
    int width=0;
    for (int i=0; i<columnCount(); ++i)
        width += 2 + columnWidth(i);
    return QSize(width +16-2, 100);
}

QSize MyTreeWidget::sizeHint() const
{
    int width=0;
    for (int i=0; i<columnCount(); ++i)
        width += 2 + columnWidth(i);
    return QSize(width +16-2, 100);
}

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That is, I basically add up the column-widths. Unfortunately I had to hardcode in "2" for the spacing between columns that is not included in the columnWidth(), and a "16" for the width of a scrollbar. Is there any way to ask Qt about these numbers?