I am wondering what the correct way is to achieve the following: I would like to have the character indices of the start of a line and its length.
At the moment I am abusing (again) the textcursor for that:

m_pTextCursor is a QTextCursor

Qt Code: 
  1. void CQtTextLayout::GetLayoutIndicesOfLine( int line, int *start, int *length )
  2. {
  3. 	if( m_pTextCursor )
  4. 	{
  5. 		m_pTextCursor->movePosition( QTextCursor::Start );
  6. 		for( int i=0; i<line; i++)
  7. 		{
  8. 			m_pTextCursor->movePosition( QTextCursor::Down );
  9. 		}
  10. 		m_pTextCursor->movePosition( QTextCursor::StartOfLine);
  11. 		*start = m_pTextCursor->position();
  12. 		m_pTextCursor->movePosition( QTextCursor::EndOfLine);
  13. 		*length = m_pTextCursor->position() - *start;
  14. 		DebugLog( "QT GetLayoutIndicesOfLine %d %d/%d", line, *start, *length );
  15. 	}
  16. 	else
  17. 	{
  18. 		*start = 0;
  19. 		*length = 0;
  20. 	}
  21. }
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