QTextEdit, sizeHint, QWidget

[TheKedge]

I've got a QTextEdit inside a sub-class of QWidget. I just want to display some simple (rich) text. I'd like the QTextEdit to scale to it's contents and the window around it around it to scale too.

class MyThing: public QWidget
{
MyThing(QWidget* parent = 0);
//...etc
 
private:
	QTextEdit* txtEdit;
}
//the constructor
MyThing(QWidget *parent): QWidget (parent)
{
txtEdit= new QTextEdit(this) ;
QWidget::setFixedSize(txtEdit->sizeHint());
}

class MyThing: public QWidget
{
MyThing(QWidget* parent = 0);
//...etc

private:
	QTextEdit* txtEdit;
}
//the constructor
MyThing(QWidget *parent): QWidget (parent)
{
txtEdit= new QTextEdit(this) ;
QWidget::setFixedSize(txtEdit->sizeHint());
}

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I think the problem is that txtEdit->sizeHint() is not influenced by the (small) amount of text in the QTextEdit. Is there any way of telling QTextEdit to occupy the minimum space possible for the given text formatting?

thanks
K