IIDFromString

Converts a string generated by the StringFromIID function back into the original interface identifier.

HRESULT IIDFromString(

LPOLESTR lpsz,	//Points to the string representation of the IID
LPIID lpiid	//Receives a pointer to the requested IID on return
);

Parameters
lpsz

Points to the string representation of the IID.

lpiid

Receives a pointer to the requested IID on return.

Return Values
S_OK

Indicates that the string was successfully converted.

E_OUTOFMEMORY

Out of memory.

E_INVALIDARG

Indicates that one or more arguments are invalid.

Comments
The function converts the interface ID in a way that guarantees different interface IDs will always be converted to different strings.