QPlainTextEdit inherited + invisibleQTextBlock + INVALID vertical scroll bar

[chmirko]

So I traced it to resizeEvent,
the method needed to call is
d->relayoutDocument();,
but is private so i can't call it directly,

it is bounded by if (old_width != now_width),

so questions are:
- how to call private member
- how to make old_width dirty, as calling resize event is quite simple
- which other member is calling this private member (of QPlainTextEdit)

member I traced it in is

void QPlainTextEdit::resizeEvent(QResizeEvent *e)
{
    Q_D(QPlainTextEdit);
    if (e->oldSize().width() != e->size().width())
        d->relayoutDocument();
    d->_q_adjustScrollbars();
}

void QPlainTextEdit::resizeEvent(QResizeEvent *e)
{
    Q_D(QPlainTextEdit);
    if (e->oldSize().width() != e->size().width())
        d->relayoutDocument();
    d->_q_adjustScrollbars();
}

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experimentaly verified with debugger (by tikering code flow) that d->_q_adjustScrollbars(); is NOT doing what it is supposed to,
d->relayoutDocument(); is the one I need,

So will there be any quick answer for any of my three questions or am I about to look inside the method where more exactly the problem is being solved?

[chmirko]

solved by calling resizeEvent(...) with faked QResizeEvent