Disable output in release mode

m.abed

Hello
I need to disable console output logs in release mode,
console.log()

how i can achieve that
i tried this , but not worked
DEFINES += QT_NO_DEBUG_OUTPUT QT_NO_WARNING_OUTPUT

koahnig

@m.abed

Are you sure that the output you are still seeing is from qDebug and it different flavors?

also cout and cerr is shown on the console.

m.abed

Yes , i can see output of console.log and qDebug() in release mode
i tested on Android and Desktop
@koahnig

m.abed

Here the solution for my problem

https://stackoverflow.com/questions/28540571/how-to-enable-and-disable-qdebug-messages?noredirect=1#comment76861982_28540571

#include <qapplication.h>
#include <stdio.h>
#include <stdlib.h>

void myMessageOutput(QtMsgType type, const QMessageLogContext &context, const QString &msg)
{
    QByteArray localMsg = msg.toLocal8Bit();
    switch (type) {
    case QtDebugMsg:
        fprintf(stderr, "Debug: %s (%s:%u, %s)\n", localMsg.constData(), context.file, context.line, context.function);
        break;
    case QtInfoMsg:
        fprintf(stderr, "Info: %s (%s:%u, %s)\n", localMsg.constData(), context.file, context.line, context.function);
        break;
    case QtWarningMsg:
        fprintf(stderr, "Warning: %s (%s:%u, %s)\n", localMsg.constData(), context.file, context.line, context.function);
        break;
    case QtCriticalMsg:
        fprintf(stderr, "Critical: %s (%s:%u, %s)\n", localMsg.constData(), context.file, context.line, context.function);
        break;
    case QtFatalMsg:
        fprintf(stderr, "Fatal: %s (%s:%u, %s)\n", localMsg.constData(), context.file, context.line, context.function);
        abort();
    }
}

int main(int argc, char **argv)
{
    qInstallMessageHandler(myMessageOutput);
    QApplication app(argc, argv);
    ...
    return app.exec();
}

Thanks Guys

Pradeep P N

@m-abed
qInstallMessageHandler() is use full for saving the logs to a file, if you don't want to save it to the file than you can use QT_LOGGING_RULES.

Unsolved Disable output in release mode