// Demonstrates how to check a command
        // reply for errors.

        #include <iostream.h>
        #include "CController.h"
        using namespace std;
        using namespace arc;

        CController cController;

        // .... open driver, initialize, etc ....

        try {
            // Set the next exposure time to 3 seconds
            long lRetVal = cController.Command( TIM_ID, SET, 3000 );

            if ( cController.ContainsError( lRetVal ) )
                throw std::runtime_error( "Set exposure time failed!" );

            // .... OR could have also done this ....

            lRetVal = cController.Command( TIM_ID, SET, 3000 );

            if ( lRetVal != DON )
                throw std::runtime_error( "Set exposure time failed!" );
         }
        catch ( std::exception &e )
        {
            cerr << "Exception Occurred: " << e.what() << endl;
        }