QTextEdit delete whole line at given position

Question

I need to delete a specific line from QTextEdit (NoWrap option is active) manualy from the program. I found a solution which explains how to remove first line, but i wonder how can I remove whole line at specific index.

I've also found a solution here Remove a line/block from QTextEdit , but I don't know what these blocks are. Do they represent single lines or not? Should i iterate through these blocks and if i reach block at given index, then delete it?

Answer 1

You can remove the line at lineNumer with :

QTextCursor cursor = textEdit->textCursor();

cursor.movePosition(QTextCursor::Start);
cursor.movePosition(QTextCursor::Down, QTextCursor::MoveAnchor, lineNumer);
cursor.select(QTextCursor::LineUnderCursor);
cursor.removeSelectedText();
cursor.deleteChar(); // clean up new line

textEdit->setTextCursor(cursor);

Here you put the cursor at the beginning of the document, move down lineNumer times, select the specific line and remove it.