title: How to change the fontsize for everything inside QTextEdit in PyQt4?
body: <p>I have a <code>QTextEdit</code> widget whose contents are populated programmatically using <code>QTextEdit.textCursor</code>.</p>
  
  <p>My plan is to let the user view the populated information in the <code>QTextEdit</code>, edit the text if necessary, and later print to a PDF file using <code>QPrinter</code>.</p>
  
  <p>However, I would like to change the font size of the entire contents of the <code>QTextEdit</code> before allowing the user to edit the text. I just need to set the contents to a single font size; there is no need to accommodate multiple font sizes.</p>
  
  <p>I have tried using <code>QTextEdit.setFontSize(16)</code> both before and after the <code>textCursor</code> operation but it doesn't seem to have any effect.</p>
  
  <p>How do I change the font size of the contents of a <code>QTextEdit</code> widget?</p>