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I use a QPlainTextEdit for a code editor that also shows line numbers.
But when I press shift+return a the editor makes a break, but the line number don’t increases.
I think in html it would just be a <br/> instead of a new <p> tag…
Have a look at the screenshot…
You should probably be using QTextEdit since this is rich text we’re talking about.
Override
virtual void keyPressEvent ( QKeyEvent * e ). You can callQTextEdit::keyPressEventin the implementation to delegate non-special cases.