typedef void (*ExportLogMsg)(const char* String, void* p)
The callback function is called by the speech port with informational and error messages. It is the second parameter to LV_SRE_OpenPort, and LV_SRE_RegisterAppLogMsg, and the first parameter to LVSpeechPort::OpenPort.
p is a pointer to a user-defined class or function which can customize behavior when the engine sends logging messages to the callback.
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