How do I find the first and (more important) the last QTextBlock in a selection provided by QTextCursor?

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How do I find the first and (more i...

January 5, 2012

bmanc

Lab Rat
17 posts

I have a QTextEdit, and in it I want to determine the first and last selected block in the selection associated with the cursor returned by QTextEdit::textCursor().

So far I don’t see anything in the API that lets me do this.

Thanks.

2 replies

January 6, 2012

joonhwan

Lab Rat
94 posts

QTextCursor cursor = textEdit->textCursor();
qDebug() << "your selection : " << cursor.selectionStart() << "~" << cursor.selectionEnd();

Hope this helps.

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joonhwan at gmail dot com

January 6, 2012

bmanc

Lab Rat
17 posts

Thanks for the reply. ~~Unfortunately I’m not sure that helps what I’m aiming. Sorry for not going into depth about the reason earlier.~~

I’m actually trying to get the QTextBlock. The reason is for bulleted list management. I want to determine the text blocks that are covered by the user’s selection. So if they have parts of a bulleted lists selected (could be across different levels of indentation) I can increment/decrement the indentation of each selected block without affecting the non-selected portions of the list.

Update
Your suggestion worked for me. Using the selectionStart() and selectionEnd() methods you pointed out along with QTextDocument::findBlock(pos) I got what I needed.
Thanks

QTextCursor c = textCursor();
QTextBlock b1 = document()->findBlock(c.selectionStart());
QTextBlock b2 = document()->findBlock(c.selectionEnd());

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January 5, 2012