[Interest] QTextEdit is too slow - hints needed

[1+1=2]

Hi,

You should use QPlainTextEdit instead of QTextEdit.

Regards.


On Tue, Jan 15, 2013 at 8:16 AM, JM <johnmiller at email.it> wrote:

> Hi all,
>
> I am using QTextEdit to display log text files, just like the Unix command
> tail -f.
> My current implementation just displays the last 5 lines and then follows
> the growing
> log file, displaying lines as they come.
> Now, I am asked to make QTextEdit display the whole file when the user
> opens a file.
> A log file can be very large. I tested it with a 2mbyte file, and
> inserting data to QTextEdit
> caused the GUI to freeze for almost 1 minute.
> This is not acceptable, and I am looking for a solution. I have the
> following questions:
>
> -) what is the fastest way to insert lots of text into QTextEdit?
> -) should I go to the route of implementing my own QTextDisplay? If so,
> should I use QAbstractScrollArea as class base? Any pointer to how to use
> it?
>
> Thanks in advance,
> JM
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