Monitoring Qt applications

In addition to debugging code, it is also useful to monitor the code to look for opportunities to improve performance or cases where memory usage can be reduced.

We will start by looking at Qt's logging capabilities.

Logging the Qt way

We have already met and discussed qDebug(), but there are other methods available for logging:

• qDebug(): To log a debug message
• qWarning(): To log a warning
• qInfo(): To log an informational message
• qCritical(): To log a critical message
• qFatal(): To log a fatal message and exit

Controlling the logging format

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