RpcObjectSetType

The RpcObjectSetType function assigns the type of an object.

This function is supported by both 32-bit platforms — Windows NT and Windows 95.

#include <rpc.h>
RPC_STATUS RPC_ENTRY RpcObjectSetType( 
  UUID *  ObjUuid,  
  UUID *  TypeUuid  
);

Parameters

ObjUuid
Points to an object UUID to associate with the type UUID in the TypeUuid argument.
TypeUuid
Points to the type UUID of the ObjUuid argument.

Specify an argument value of NULL or a nil UUID to reset the object type to the default association of object UUID/nil type UUID.

Remarks

A server application calls the RpcObjectSetType routine to assign a type UUID to an object UUID.

By default, the RPC run-time library automatically assigns all object UUIDs with the nil type UUID. A server application that contains one implementation of an interface (one manager entry-point vector [EPV]) does not need to call RpcObjectSetType provided the server registered the interface with the nil type UUID (see RpcServerRegisterIf).

A server application that contains multiple implementations of an interface (multiple manager EPVs — that is, multiple type UUIDs) calls RpcObjectSetType once for each different object UUID/non-nil type UUID association the server supports. Associating each object with a type UUID tells the RPC run-time library which manager EPV (interface implementation) to use when the server receives a remote procecure call for a non-nil object UUID.

The RPC run-time library allows an application to set the type for an unlimited number of objects.

To remove the association between an object UUID and its type UUID (established by calling RpcObjectSetType), a server calls RpcObjectSetType again specifying a null value or a nil UUID for the TypeUuid argument. This resets the object UUID/type UUID association to the default association of object UUID/nil type UUID.

A server cannot assign a type to the nil object UUID. The RPC run-time library automatically assigns the nil object UUID a nil type UUID.

Return Values

Value Meaning
RPC_S_OK Success
RPC_S_INVALID_OBJECT Invalid object
RPC_S_ALREADY_REGISTERED Object already registered

QuickInfo

  Windows NT: Yes
  Windows CE: Unsupported.
  Header: Declared in rpcdce.h.
  Import Library: Link with rpcrt4.lib.

See Also

RpcServerRegisterIf