IEIsXMLNSRegistered function

Determines if the specified XML namespace is registered.

Syntax


HRESULT STDAPICALLTYPE IEIsXMLNSRegistered(
  _In_  LPCWSTR lpszURI,
  _Out_ GUID    *pCLSID
);

Parameters

lpszURI [in]: A pointer to the XML namespace schema URI.
pCLSID [out]: A pointer to the registered CLSID for the XML namespace, if successful.

Return value

This function can return one of these values.

Return code	Description
E_NOTFOUND	There is no registered CLSID for the URI.
E_INVALIDARG	The pCLSID is NULL.
CO_E_CLASSSTRING	The operation failed.

Remarks

The IEIsXMLNSRegistered function can be used to determine whether a handler has been registered for specialized XML formats, such as Scalable Vector Graphics (SVG), or MathML.

On Windows Server 2003 (x64) Datacenter Edition, this method returns CO_E_CLASSSTRING. You cannot check if an XML namespace is registered on that platform.

Requirements

Minimum supported client	Windows XP with SP2, Windows Vista
Minimum supported server	Windows Server 2008
Header	Mshtmhst.h
DLL	Mshtml.dll; Mshtml.dll