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SPORT_SHOW_STATE
Serial Port I/O Function: Displays the state of a port to standard output. This routine is only available for Windows.
Module
USE IFPORT
result = SPORT_SHOW_STATE (port,level)
port  |  
      (Input) Integer. The port number.  |  
     ||||||||||||||
level  |  
      (Input) Integer. Controls the level of detail displayed as follows: 
  |  
     
Results
The result type is INTEGER(4). The result is zero if successful; otherwise, a Windows* error value.
This routine must not be used when any I/O is pending. Since a read operation is always pending after any I/O has been started, you must first call SPORT_CANCEL_IO before port parameters can be changed.
Example
USE IFPORT
INTEGER(4) iresult
iresult =  SPORT_SHOW_STATE( 2, 0 )
END 
  See Also
Communications and Communications Functions in the Microsoft* Platform SDK