Drawing QImage inside QTextDocument

I would like to draw an Image inside a QText Document.
I used the code:

Code:

---

QImage geometry(300,200,QImage::Format_Mono);
	QPainter painter(&geometry);
	painter.setPen(QPen(Qt::black,12,Qt::SolidLine,Qt::RoundCap));
 
	QLineF line1(10,80,80,80);
	QLineF line2(10,10,80,80);
	painter.drawLine(line1);
	painter.drawLine(line2);
 
	m_cursor.insertImage(geometry);
	m_document->print(&printer);

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where m_cursor is a QTextCursor on QTextDocument.
Hower, when I print the document on a pdf printer, I get an obscure image (no lines at all!).
Any idea?