Converts a property set's format identifier to its storage or stream name.
HRESULT FmtIdToPropStgName(
  const FMTID* pfmtid,  //Pointer to the format identifier of the 
                        // property set
  LPOLESTR oszName      //Pointer to a string receiving the property 
                        // set name
);
 
This function supports the standard return value E_INVALIDARG as well as the following:
FmtIdToPropStgName maps a property set's format identifier to its stream name for a simple property set or to its storage name for a nonsimple property set.
This function is useful in creating or opening a property set using the PROPSETFLAG_UNBUFFERED value with the StgCreatePropStg and StgOpenPropStg functions. See the PROPSETFLAG enumeration for more information on the use of PROPSETFLAG_UNBUFFERED.
| Windows NT | 4.0/SP2 or with IPROP.DLL | 
| Win95 | Yes; requires IPROP.DLL | 
| Win32s | No | 
| Unicode | Yes | 
| Import Library | IPROP.DLL | 
| Header File | IPROPIDL.H | 
  Windows NT: Use version 4.0 SP2 or later.
  Windows: Unsupported.
  Windows CE: Unsupported.
  Header: Declared in objidl.h.
  Import Library: Included as a resource in ole32.dll.
PROPSETFLAG, PropStgNameToFmtId, StgCreatePropStg, StgOpenPropStg