How to set text and font in qTextEdit?

[wysota]

Look at QTextCursor and QTextCharFormat classes.

[JuKu]

Thank you! The Qt documentation is very good, but there is lots of it. Your keywords pointed me to the right direction.

To save other noobies an hour or two, here is where the keys were found:
All Overviews and HOWTOs in general and especially, Supported HTML Subset. I hadn't realized the qTextEdit used HTML inside!

Here is some example code:

ui->TextEdit->setText("1234567890<br>1234567890<br>line3");
  QTextCursor cursor(ui->TextEdit->document());
  cursor.setPosition(15, QTextCursor::MoveAnchor);  //  Go to 4th character of second line; the <br> counts as one character.
  cursor.movePosition(QTextCursor::Right, QTextCursor::KeepAnchor, 3);  // select three charaters
  QString s=cursor.selectedText();
  cursor.insertHtml("<FONT color=green  style=\"BACKGROUND-COLOR: yellow\">"+s+"</FONT>");  // make them ugly

ui->TextEdit->setText("1234567890<br>1234567890<br>line3");
  QTextCursor cursor(ui->TextEdit->document());
  cursor.setPosition(15, QTextCursor::MoveAnchor);  //  Go to 4th character of second line; the <br> counts as one character.
  cursor.movePosition(QTextCursor::Right, QTextCursor::KeepAnchor, 3);  // select three charaters
  QString s=cursor.selectedText();
  cursor.insertHtml("<FONT color=green  style=\"BACKGROUND-COLOR: yellow\">"+s+"</FONT>");  // make them ugly

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The more familiar I get with Qt, the more I like it.