ReadClassStg (Compact 2013)

3/26/2014

This function reads the CLSID previously written to a storage object with the WriteClassStg.

Syntax

WINOLEAPI ReadClassStg( 
  IStorage* pStg,
  CLSID* pclsid 
);

Parameters

• pStg
  [in] Pointer to the IStorage interface on the storage object containing the CLSID to be retrieved.

• pclsid
  [out] Pointer to where the CLSID is written. Can return CLSID_NULL.

Return Value

This function supports the standard return value E_OUTOFMEMORY. The return value S_OK means that the CLSID was returned successfully.

This function also returns any of the error values returned by the IStorage::Stat method.

Remarks

Passing into this function any invalid and, under some circumstances, NULL pointers results in unexpected termination of the application.

This function is a helper function that calls the IStorage::Stat method and retrieves the CLSID previously written to the storage object with a call to WriteClassStg from the STATSTG structure.

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

Requirements

See Also

Reference

Storage Functions
IStorage
IStorage::Stat
STATSTG
WriteClassStg