Command General Rules

All commands must return a completion code:

• ERROR_OPERATION_ABORTED is returned as the completion code when the server or client uses its SignalAbort interface.
  
  
• ERROR_SUCCESS is returned whenever a command successfully completes.
  
  
• ERROR_NOT_SUPPORTED is returned if the client is asked to perform any command for which no support exists. This could happen if the client specifies incorrect feature support bits during IClientVirtualDeviceSet2::Create.
  
  
• In other cases, a code appropriate to the operation must be returned. For WIN32-defined codes, see the file Winerror.h.