Enabling the Diagnostic Macros

The application framework TRACE macros are particularly useful for monitoring program activity. They require that tracing be enabled, which is the default setting. If you're not seeing TRACE output from your program, first make sure that you are running the debug target from the debugger and then run the TRACER utility. If you check the Enable Tracing checkbox, TRACER will insert the statement

TraceEnabled = 1

in the [Diagnostics] section of a file named Afx.ini. (No, it's not stored in the Registry.) You can also use TRACER to enable other MFC diagnostic outputs, including message, OLE, database, and Internet information.