QProgressDialog stucks

[faldzip]

don't use waitFor* methods where you don't have to because they are blocking - as their names say - they're just waiting and doing nothing (your whole application is just waiting) until something is done. Create progress dialog on a heap and connect QProcess::finished() with QProgressDialog::close() and don't use waitForFinished() so in between your applicantion can process events.

P.S. And I'm not sure but you can set WA_DeleteOnClose attribute to the QProgressDialog...

[Mystical Groovy]

i dont want to create new slots and staff so ill use the standart system() function

code ive used but its no working:

QProgressDialog progress("Installing Package...", "Cancel", 0, 0, this);
        progress.setRange(0,0);
        progress.setWindowModality(Qt::WindowModal);
        qApp->processEvents();
 
        while(progress.exec())
        {
        system ( InstallPkgCom ); //install package
        }
 
        progress.close();

QProgressDialog progress("Installing Package...", "Cancel", 0, 0, this);
        progress.setRange(0,0);
        progress.setWindowModality(Qt::WindowModal);
        qApp->processEvents();

        while(progress.exec())
        {
        system ( InstallPkgCom ); //install package
        }

        progress.close();

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[caduel]

during the execution of system() the calling thread "pauses" - you can't show a QProgressDialog nor interact with it during that time. So use QProcess instead.

[Mystical Groovy]

well ive tried to do ti with byconnecting qrocess::finished to QProgressDialog::close()

but it says:

Object::connect: No such signal QProcess::finished()

Object::connect: No such signal QProcess::finished()

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heres my code:

QProcess *installproc = new QProcess(this);
connect( installproc, SIGNAL(finished()),
                 this, SLOT(processFinished()) );
 
        installproc->start(InstallPkgCom);

QProcess *installproc = new QProcess(this);
connect( installproc, SIGNAL(finished()),
                 this, SLOT(processFinished()) );

        installproc->start(InstallPkgCom);

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[faldzip]

you can check in docs that it is: void finished ( int exitCode, QProcess::ExitStatus exitStatus )

[Mystical Groovy]

thank you all for your help i did it!

progress->setLabelText("Removing Package...");
        progress->setRange(0,0);
        progress->setWindowModality(Qt::WindowModal);
 
        QProcess *removeproc = new QProcess(this);
        removeproc->start(RemovePkgCom);
        connect( removeproc, SIGNAL(finished(int,QProcess::ExitStatus)),this,SLOT(removeProcessFinished()));
 
        progress->exec();

progress->setLabelText("Removing Package...");
        progress->setRange(0,0);
        progress->setWindowModality(Qt::WindowModal);

        QProcess *removeproc = new QProcess(this);
        removeproc->start(RemovePkgCom);
        connect( removeproc, SIGNAL(finished(int,QProcess::ExitStatus)),this,SLOT(removeProcessFinished()));

        progress->exec();

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