[PyQt] Show QDialog and execute code after

[Kyle Altendorf]

On April 14, 2018 2:01:36 PM EDT, Maurizio Berti <maurizio.berti at gmail.com> wrote:
>> I making an update app that shows a QTextEdit object and starts
>(should)
>start to get information from the system before
>> ask the user what to do, it does that but if now but only after the
>function get all the system info and the it draws the QDialog.
>>
>> It's something like a Debian apt-get where the terminal is showing 
>what
>is appending before and after each operation.
>
>If that's the case, you should use a separate QObject that collects the
>output of apt-get and emits a signal every time it has something to
>show.
>That QObject has to be moved to a new QThread, so that the apt-get
>process
>will not block the GUI interaction and painting.

Or avoid threads and use QProcess if it is actually a case of subprocessing. The good answer really depends on the actual long running activity. Could be processEvents() or QProcess or even Twisted or such (or occasionally threading).

Cheers,
-kyle