[SOLVED] qInstallMessageHandler cannot convert parameter 1

glararan

Hello,

I'm using qDebug, but when I release program for other people I want to log when program crash (Beta deploy)
So I found I can use qInstallMessageHandler for use qDebug.

But when I add to main qInstallMessaheHandler(LogHandler) it errors with code:
@error: C2664: 'qInstallMessageHandler' : cannot convert parameter 1 from 'void (__cdecl *)(QtMsgType,QMessageLogContext &,const QString &)' to 'QtMessageHandler'
None of the functions with this name in scope match the target type@

main.cpp
@void LogHandler(QtMsgType type, QMessageLogContext& context, const QString& message)
{
QByteArray lMessage = message.toLocal8Bit();

QString text = NULL;

switch(type)
{
    case QtDebugMsg:
        text = QString("Debug (%s:%u, %s): %1").arg(context.file).arg(context.line).arg(context.function).arg(lMessage.constData());
        break;

    case QtWarningMsg:
        text = QString("Warning (%s:%u, %s): %1").arg(context.file).arg(context.line).arg(context.function).arg(lMessage.constData());
        break;

    case QtCriticalMsg:
        text = QString("Critical (%s:%u, %s): %1").arg(context.file).arg(context.line).arg(context.function).arg(lMessage.constData());

    case QtFatalMsg:
        text = QString("Fatal (%s:%u, %s): %1").arg(context.file).arg(context.line).arg(context.function).arg(lMessage.constData());
        abort();
}

QFile file&#40;"log.txt"&#41;;
file.open(QIODevice::WriteOnly | QIODevice::Append&#41;;

QTextStream tStream(&file);
tStream << text << endl;

}

int main(int argc, char* argv[])
{
QApplication app(argc, argv);

qInstallMessageHandler(LogHandler);

MainWindow mw;
mw.showMaximized();

return app.exec&#40;&#41;;

}@

I tried reintepred_cast, but it crash before app start :D

raven-worx

-are you sure your includes are correct and before the definition of your LogHandler()?-

Your method definition is wrong...you are missing const on the second parameter:
@
void LogHandler(QtMsgType type, const QMessageLogContext& context, const QString& message)
{
}
@

glararan

Oh thanks, that little mistake :/