Instantiating Your Derived Filter
If you created your own derived handle class, you can instantiate your derived filter like this:
 
MyMultiClientFilter myMultiFilter;
 
If you did not create your own derived handle class, you must explicitly instantiate a body with your body class’s make() function and pass the body to a handle of type RWTraceEventFilter, as shown in this example:
 
RWTraceEventFilter myTraceFilter ( Test2TraceFilterImp::make() );
Use your filter as you would any predefined filter, as discussed in Using the Predefined Filters.