IRunnableObject::GetRunningClass

Returns the CLSID of a running object.

HRESULT GetRunningClass(

LPCLSID lpClsid	//Pointer to an object's CLSID
);

Parameter
lpClsid

[out] Points to the object's class ID.

Return Values
S_OK

CLSID was returned successfully.

E_INVALIDARG

An argument is invalid.

E_UNEXPECTED

An unexpected error occurred.

Comments
If an embedded document was created by an application that is not available on the user's computer, the document, by a call to CoTreatAsClass, may be able to display itself for editing by emulating a class that is supported on the user's machine. In this case, the CLSID returned by a call to IRunnableObject::GetRunningClass will be that of the class being emulated, rather than the document's native class.