Utility class used to wait until an asynchronous messaging operation has completed.

To use the class:

1. Create a new CMsvOperationActiveSchedulerWait object

2. Call the messaging function that returns the asynchronous operation. The operation observer parameter should be the iStatus word of the CMsvOperationActiveSchedulerWait object. This means that the CMsvOperationActiveSchedulerWait object will be signalled when the operation completes.

3. Call the CMsvOperationActiveSchedulerWait object's Start() function. This sets the object to be active.

These steps cause the program to wait until the operation completes.

     CMsvOperationActiveSchedulerWait* waiter=CMsvOperationActiveSchedulerWait::NewLC();
     CMsvOperation* op = function_returning_opLC(waiter->iStatus);
     waiter->Start();

     CleanupStack::PopAndDestroy(2); // op, waiter