get PID of QProcess with python on windows

Question

Is there some way to read the PID of a process started with QProcess.start(...)? QProcess::pid() returns sip.voidptr and there's not much I can do with it (or I don't know how).

I want to have the PID to have the possibility to make the window active later on.

score 2 · Answer 1 · answered Apr 16 '13 at 22:16

2

Try QProcess.startDetached since it spawns a standalone process, removing the possibility of sharing PID with its parent.

This might provide some you further insight.

answered Apr 16 '13 at 22:16

Bleeding Fingers

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I know that startDetached returns pid of new process... but is there possibility of catch finished() signal? Also... it is a separate process anyway... so I don't get why it is not simplified? – middleofdreams Apr 17 '13 at 06:09

Spencer · Answer 2 · 2017-03-16T02:31:13.683

0

Try:

proc = QtCore.QProcess().start(cmdOrWhaterver)
pid = int(proc.pid())

Not sure if this helps you or not but you can also try proc.setObjectName() which has worked for me when referencing a process after it has run for a bit.

that's for python anyway

edited Mar 16 '17 at 02:31

answered Mar 13 '17 at 02:19

Spencer

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score 0 · Answer 3 · answered Sep 10 '21 at 15:05

pid() function is provided to keep old source code working. Use processId() instead. Returns the native process identifier for the running process, if available. If no process is currently running, 0 is returned. Note: Unlike processId(), pid() returns an integer on Unix and a pointer on Windows.

get PID of QProcess with python on windows

3 Answers3