API browser of generalnotification440 COM module


/images/arrow_right.png IGeneralNotificationResponse::GetNextMessage method
Retrieves the next notification message. VARIANT_FALSE is returned if the end of the message list is reached.

Note that the any message supplied with that method is older by one message exchange. Therefore the message iterator forms a serialized message historization.

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/images/arrow_right.png C/C++ calling syntax
HRESULT GetNextMessage( BSTR
BSTR
DATE
VARIANT_BOOL
*pbstrMessage,
*pbstrFormOID,
*pMessageDate,
*pbStatus);
 
/images/arrow_right.png Calling argument description
[out] BSTR *pbstrMessage The message on the current historization level.
[out] BSTR *pbstrFormOID An optional OID of a form.

This form OID must be ignored as it is just a historicized one.

[out] DATE *pMessageDate The date when the message was generated.
[out, retval] VARIANT_BOOL *pbStatus Return status of the method. If pbStatus is VARIANT_FALSE the end of data is reached
 
/images/arrow_right.png C/C++ return value
S_OK This value is returned if the function call was successful or if the return value of a boolean method signalling a true value. In this case the VARIANT_BOOL is set to VARIANT_TRUE.
S_FALSE This is the return value of a boolean method signalling a false return value. In this case the VARIANT_BOOL is set to VARIANT_FALSE.
E_name This value is returned if the function call was unsuccessful and an error exception was generated. Note that if you are using SmartPointers an exception is thrown under these conditions.