qApp null if QCoreApplication defined in shared library

[magland]

I don't think what I am seeing is the expected behavior.... shouldn't the qApp automatically point to the same instance of QCoreApplication whether I am in the main program or a shared library? I found several posts to indicate that this should be the case. But I'm the only one commenting on this thread... would appreciate some help, as I am STUCK!

Shouldn't I be able to define "QCoreApplication app;" in the main.cpp and then access that via qApp in a shared library? (Kind of the opposite problem as outlined above) Well that doesn't work either!

[Santosh Reddy]

Why do you want to create an instance on QCoreApplication in a shared library?

I believe all you need would be few static calls, which can be always used without instance.

I suggest to not to use

qApp->applicationDirPath()

qApp->applicationDirPath()

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, instead use

QCoreApplication::applicationDirPath()

QCoreApplication::applicationDirPath()

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further you can get the instance using

QCoreApplication app = QCoreApplication::instance();

QCoreApplication app = QCoreApplication::instance();

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then you can use

app->setProperty(..);

app->setProperty(..);

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