# 9.4. Logging Messages¶

The logging of messages is handled by three dedicated macros, one for each available verbosity level (see Verbosity Level):

Said macros take exactly two arguments, a category and a message, and produce a log entry showing the message itself plus some meta information depending on the module’s configuration (see Log Entry Specification and Log Entry).

logInfo(DOCUMENTATION_CATEGORY, "This is an info message");
logWarning(DOCUMENTATION_CATEGORY, "This is an warning message");
logError(DOCUMENTATION_CATEGORY, "This is an error message");


Warning

Note that each message level is deactivated when CMake options LOG_NO_INFO, LOG_NO_WARNING or LOG_NO_ERROR are set to ON respectively. For more information about how to enable and disable each individual logging macro, please refer to Disable Logging Module.