How to set number of lines for an QTextEdit?

I use a QTextEdit for some inputs. But I want to adjust the height of the box. Can I set the height based on the number of lines I want to have visible at a time?

How to set size of QTextEdit?

Re: Resizeable QTextEdit within a layout Just stick the text edit in a layout and on resize (grab and drag) change its fixed size.

How do I get text from QPlainTextEdit?

The entire text can be selected using selectAll(). QPlainTextEdit holds a QTextDocument object which can be retrieved using the document() method. You can also set your own document object using setDocument().

If you use QPlainTextEdit, something like this should do the trick:

void SetHeight (QPlainTextEdit* edit, int nRows)
  {
  QFontMetrics m (edit -> font()) ;
  int RowHeight = m.lineSpacing() ;
  edit -> setFixedHeight  (nRows * RowHeight) ;
  }

You might want to add two or three pixels as margin; experiment will tell.