Enable QMessageLogContext in release build

beecksche

Hi,
i want to enable the QMessageLogContext in my release build. I defined QT_MESSAGELOGCONTEXT (http://doc.qt.io/qt-5/qmessagelogcontext.html#details) in my main.cpp, but nothing changed.

Can somone tell me what i'm doing wrong?

Thanks!

Paul Colby

Hi @beecksche,

I defined QT_MESSAGELOGCONTEXT in my main.cpp, but nothing changed.

You probably need to define it more broadly (or at least before certain #include statements). The easiest way would be to add to your *.pro (or *.pri) file:

DEFINES += QT_MESSAGELOGCONTEXT

Some examples in the wild: https://github.com/search?q=QT_MESSAGELOGCONTEXT&type=Code&utf8=✓

Cheers.

beecksche

@Paul-Colby
I'm working with VS2013 and add QT_MESSAGELOGCONTEXT to the preprocessor definitions in the project settings. First i have forgotten to add the definitions in my additional libraries.

I'm not sure if it is the same to define QT_MESSAGELOGCONTEXT in the source code, like:

main.cpp

#define QT_MESSAGELOGCONTEXT

#incude ...

int main(int argc, char *argv[])
{
...
}

Thanks for help. Now it works perfectly.