Restart app does not work

[guidupas]

Hello!

I am trying to restart my app using the code:
@
QStringList args = QApplication::arguments();
args.removeFirst();
QProcess::startDetached(QApplication::applicationFilePath(), args);
QCoreApplication::quit();
@

or

@
QProcess::startDetached(qApp->arguments()[0], qApp->arguments());
qApp->quit();
@

It works fine when I run it in Qt, but when I build it, generate the .pkg and install it does not restart and when I reopen the app it gives a message that the app was finished during windows reopen.

I am using OSX 10.9

Thanks very much.

[SGaist]

Hi,

You should rather use the QCoreApplication::applicationFilePath method to retrieve the executable's location. qApp->arguments()[0] might not contain what you think, especially on 10.9

Hope it helps

[guidupas]

Well, I tried this and still not working

@
QProcess::startDetached(QCoreApplication::applicationFilePath());
qApp->quit();
@

Not even when I run in Qt

[SGaist]

Did you check what value both calls return ?

[guidupas]

Well, when I run
@
qDebug() << QApplication::applicationFilePath();
@

It returns:
@
"/Users/guilhermedupas/Dropbox/Guilherme - Particular/QT/Projetos/build-SwotGut-Desktop_Qt_5_3_0_clang_64bit-Release/SwotGut.app/Contents/MacOS/SwotGut"
@

This is the correct location of the executable

[SGaist]

For the sake of testing, try starting it normally with QProcess and check what error you might get

[guidupas]

Can you help me how to do that? How can I see the returned error?

Thanks a lot.

[SGaist]

Just follow the example from "here":http://qt-project.org/doc/qt-5/qprocess.html#synchronous-process-api and check what you have in both output channels

[guidupas]

SGaist, I did the process like the example:
@
QObject *parent;
QString program = "/Users/guilhermedupas/Dropbox/Guilherme - Particular/QT/Projetos/build-SwotGut-Desktop_Qt_5_3_0_clang_64bit-Release/SwotGut.app/Contents/MacOS/SwotGut";

QStringList arguments;
arguments << "-style" << "fusion";

QProcess *myProcess = new QProcess(parent);
myProcess->start(program, arguments);

if (!myProcess->waitForStarted())
        qDebug() << "false";

if (!myProcess->waitForFinished())
        qDebug() << "false";

QString result = myProcess->readAll();

qDebug() << result;

@

My program runs, but when I click in the action to restart that uses this code:
@
QProcess::startDetached(QCoreApplication::applicationFilePath());
QCoreApplication::quit();
@

Console returns this: ""
And I need to use control c to exit and in Qt output appears crashed

[SGaist]

IIRC, since you didn't merge both channels, you need to call read readAllStandardError and readAllStandardOutput to check what happened