How to program scrollbar to jump to bottom/top in case of change in QPlainTextEdit or QTextEdit area? It looks like it doesn\'t have any controlling function.
You can use the 'ensureCursorVisible' method:
void QTextEdit::ensureCursorVisible () Ensures that the cursor is visible by scrolling the text edit if necessary.
This is not a slot, though, so you can't connect it to any signal -- you'll have to create something yourself that you can connect to the void textChanged() signal.
Disclaimer: I may have misunderstood your question -- I assume you want to scroll down when some text is appended to the text.