QCoreApplication::instance() returning NULL
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I am developing a plugin for an Qt application called Wireshark. The plugin is built into a Windows DLL that is detected at Wireshark startup time.
I want to reference the QCoreApplication in the DLL. I've tried using QCoreApplication::instance() but it return a NULL pointer.
The main application class is defined like this:
class WiresharkApplication : public QApplication { Q_OBJECT public: explicit WiresharkApplication(int &argc, char **argv); . .And it's instantiated in main.
I've read that there is a problem with QCoreApplication::instance() and release and debug builds - see http://www.qtcentre.org/archive/index.php/t-45574.html
Is this an actual problem?
I'm using Visual Studio 2013 to develop the code.
Thanks and regards...Paul
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In fact this should not give the problem. It should return the right value object value. It does not matter from where you are calling. I have used this many times on linux and Mac, It works fine. I'm sure this will not help you. Can I send my simple plugin and app code which you can check ? Hope your plugin and exe are either in release or debug mode and NOT criss-crossed.
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In fact this should not give the problem. It should return the right value object value. It does not matter from where you are calling. I have used this many times on linux and Mac, It works fine. I'm sure this will not help you. Can I send my simple plugin and app code which you can check ? Hope your plugin and exe are either in release or debug mode and NOT criss-crossed.
@dheerendra Hi - I might take you up on the offer of trying your code but let me try to fix what I have first. The build process for Wireshark is extremely complex and so I think I should check that I have criss crossed the build and debug status.
