Returns the Help context ID for the error.
HRESULT GetHelpContext (
[out] A pointer to memory in which to return the Help context ID for the error. If there is no Help file (*pbstrHelpFile returned by IErrorInfo::GetHelpFile is a null pointer), the returned value has no meaning.
The method succeeded.
pdwHelpContext was a null pointer.
The locale ID specified by the lcid parameter in IErrorRecords::GetErrorInfo was not supported by the provider.
The implementation of this method in the data access technologies calls IErrorLookup::GetHelpInfo to retrieve the Help context ID.