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Liblouis User's and Programmer's Manual

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7.16 lou_setLogLevel

typedef enum
{
  LOU_LOG_ALL = 0,
  LOU_LOG_DEBUG = 10000,
  LOU_LOG_INFO = 20000,
  LOU_LOG_WARN = 30000,
  LOU_LOG_ERROR = 40000,
  LOU_LOG_FATAL = 50000,
  LOU_LOG_OFF = 60000
} logLevels;
void lou_setLogLevel (
  logLevels level);

This function can be used to influence the amount of logging, from fatal error messages only to detailed debugging messages. Supported values are LOU_LOG_DEBUG, LOU_LOG_INFO, LOU_LOG_WARN, LOU_LOG_ERROR, LOU_LOG_FATAL and LOU_LOG_OFF. Enabling logging at a given level also enables logging at all higher levels. Setting the level to LOU_LOG_OFF disables logging. The default level is LOU_LOG_INFO.