[Qt-interest] append non-paragraph text in QPlainTextEdit

[Robert Hairgrove]

Klaus Schneider-Zapp wrote:
> Hi,
> 
> in my app I read from a serial port and append all incoming text to a 
> QPlainTextEdit to be displayed. I cannot use appendPlainText (), since 
> incoming pieces are not necessarily new paragraphs. I can use insertText() 
> but this has the following problem: If the user selects text and in that 
> moment new data comes in, the selection is deleted and replaced. The brute 
> force method to solve this would be to save the currect selection and cursor 
> position, set the cursor at the end, insert the text, and restore cursor 
> position and selection. However, this adds unnecessary overhead to my program 
> and slows it down, especially if data is received at a high rate. Is there a 
> more convenient way to solve this problem?
> 
> Thanks very much and best regards,
> Klaus

It sounds like you need to buffer the input ... have you looked at 
QDataStream and QBuffer?