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Thread: How to wait for process to finish

  1. #1
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    Default How to wait for process to finish

    Hi,
    I have the next call to run a scrip that unzip a zip:
    process.startDetached("/bin/sh", QStringList()<< "/home/sg/Docs/MyScript.sh" << Arg1);

    Once its unzipped, I want to make things with those files. The problem is that it seems that when I look for the files it says that they doen't exist (But they are in the folder and are readable and all ok).
    It seems that its because the process hasn't finished yet unzipping because if i put a sleep(3) it works perfect. So my question is: how can I know when has process finished? I can't use a sleep cause its a gui aplicattion working on background.


    Thank you.

  2. #2
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    Default Re: How to wait for process to finish

    Don't use startDetached() but a real QProcess instance and connect to its signals.

    Cheers,
    _

  3. #3
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    Default Re: How to wait for process to finish

    QProcess process;
    And then how do you run the script? process.???

    To connect it I suppose you mean to do something like:

    connect(this, SIGNAL(process.finished()), this, SLOT(HasFinished());

    declaring in the .h

    Qt Code:
    1. private slots: HasFinished();
    To copy to clipboard, switch view to plain text mode 

  4. #4
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    Default Re: How to wait for process to finish

    Quote Originally Posted by roseicollis View Post
    QProcess process;
    And then how do you run the script? process.???
    I recommend looking at the Qt documentation for QProcess.

    Quote Originally Posted by roseicollis View Post
    To connect it I suppose you mean to do something like:

    connect(this, SIGNAL(process.finished()), this, SLOT(HasFinished());
    Yes, but with a sender that actually makes sense and a valid signal name.

    Quote Originally Posted by roseicollis View Post
    declaring in the .h

    Qt Code:
    1. private slots: HasFinished();
    To copy to clipboard, switch view to plain text mode 
    [/quote]
    Right, but with actually correct syntax.

    Cheers,
    _

  5. #5
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    Default Re: How to wait for process to finish

    Ok thank you

    Edited: Implemented with process.start() and working
    Last edited by roseicollis; 22nd December 2014 at 17:01.

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