Inserts an activity type value in the trace file indicating that logging has begun and then starts logging all the enabled application trace activities. Before calling TraceBegin, you must have opened the trace file using the TraceOpen function.
TraceBegin ( identifier )
ErrorReturn. Returns one of the following values:
Success!—The function succeeded
FileNotOpenError!—TraceOpen has not been called yet
TraceStartedError!—TraceBegin has already been called
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