[Qt-interest] resize Dialog to minimum height

[Matthias Pospiech]

I have a dialog with a tabwidget which can be enabled or disabled (hidden)

If the tabwidget is hidden the dialog must not take the whole space it 
had with the tabwidget.
It should rather be resized to minimum height. this however did not 
work. I tried the following:

    if (state == Qt::Checked)
        tabWidget_FullOptions->setHidden(false);
    else {
        tabWidget_FullOptions->setHidden(true);
        this->resize(this->sizeHint().width(), 
this->minimumSizeHint().height());
    }

However the resize does not happen, or has no effect.
So how do I resize a Dialog to its minimum height?

Matthias