OleRegEnumVerbs - OLE Programmer's Reference

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OleRegEnumVerbs

Returns an enumeration of the registered verbs for the specified class. Developers of custom DLL object applications use this function to emulate the behavior of the default object handler.

HRESULT OleRegEnumVerbs(

REFCLSID clsid,	//Reference to class identifier
LPENUMOLEVERB * ppenumOleVerb	//Pointer to returned enumerator
);

Parameters
clsid

Specifies the class whose verbs are being requested.

ppenumOleVerb

Points to where to return the enumeration.

Return Values
S_OK

Indicates the enumerator was returned successfully.

E_OUTOFMEMORY

Indicates there is insufficient memory to complete the operation.

OLEOBJ_E_NOVERBS

Indicates no verbs are registered for the class.

REGDB_E_CLASSNOTREG

Indicates no CLSID is registered for the class object.

REGDB_E_READREGDB

Indicates an error occurred reading the registry.

OLE_E_REGDB_KEY

Indicates the DataFormats/GetSet key is missing from the registry.

Comments
Object applications can ask OLE to enumerate supported verbs in one of two ways. One way is to call OleRegEnumVerbs. The other way is to return OLE_S_USEREG in response to calls by the default object handler to IOleObject::EnumVerbs. OLE_S_USEREG instructs the default handler to call OleRegEnumVerbs. Because DLL object applications cannot return OLE_S_USEREG, they must call OleRegEnumVerbs rather than delegating the job to the object handler.

The OleRegEnumVerbs function and its sibling functions, OleRegGetUserType, OleRegGetMiscStatus, and OleRegEnumFormatEtc, provide a way for developers of custom DLL object applications to emulate the behavior of OLE's default object handler in getting information about objects from the registry. By using these functions, you avoid the considerable work of writing your own, and the pitfalls inherent in working directly in the registry. In addition, you get future enhancements and optimizations of these functions without having to code them yourself.

See Also
IOleObject::EnumVerbs

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