3.1.4.12.7 Schema (Opnum 9)

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The Schema method is received by the server in an RPC_REQUEST packet. In response, the server returns an IAppHostElementSchema that represents the schema and constraints for the specified IAppHostElement object.

 [propget] HRESULT Schema(
   [out, retval] IAppHostElementSchema** ppSchema
 );

ppSchema: Contains schema of the specified IAppHostElement object.

Return Values: The server MUST return zero if it successfully processes the message that is received from the client. In this case, *ppSchema is not NULL. If processing fails, the server MUST return a nonzero HRESULT code as defined in [MS-ERREF]. The following table describes the error conditions that MUST be handled and the corresponding error codes. A server MAY return additional implementation-specific error codes.

Return value/code

Description

0X00000000

NO_ERROR

The operation completed successfully.

0X80070057

ERROR_INVALID_PARAMETER

One or more parameters are incorrect or null.