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This function supplies a pointer to the IRunningObjectTable interface on the local Running Object Table (ROT).

WINOLEAPI GetRunningObjectTable(
  DWORD reserved,


[in] Reserved for future use; must be zero.


[out] Address of IRunningObjectTable* pointer variable that receives the interface pointer to the local ROT. When the function is successful, the caller is responsible for calling IUnknown::Release on the interface pointer. If an error occurs, *pprot is undefined.

This function supports the standard return value E_UNEXPECTED, as well as the following:


An IRunningObjectTable pointer was successfully returned.

Each workstation has a local ROT that maintains a table of the objects that have been registered as running on that machine. This function returns an IRunningObjectTable interface pointer, which provides access to that table.

Moniker providers, which hand out monikers that identify objects so they are accessible to others, should call GetRunningObjectTable.

Use the interface pointer returned by this function for the following:

  • To register objects when they begin running
  • To record the times that those objects are modified
  • To revoke their registrations when they stop running

See the IRunningObjectTable interface for more information.

Compound document link sources are the most common example of moniker providers. These include server applications that support linking to their documents (or portions of a document) and container applications that support linking to embeddings within their documents.

Server applications that do not support linking can also use the ROT to cooperate with container applications that support linking to embeddings.

To determine whether the platform supports this function, see Determining Supported COM APIs.

Windows Embedded CEWindows CE 3.0 and later
Windows MobileWindows Mobile Version 5.0 and later

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