Application.API.MessageLog Category

The following table describes the Application.API.MessageLog category, which provides access to additional messages registered during API operations:

Property Name	Type	Description
Is_Empty	Boolean	Returns TRUE if the message log is not empty. The log is reset before the beginning of every API operation.
Log	SAFEARRAY(VARIANT)	Returns the content of the log.

The Property Log from the MessageLog category is organized as a one-dimensional SAFEARRAY with VARIANT type as elements. The array has the following structure:

The following table describes the elements of the array:

Message Log Element	Type	Description
Total Number	Long	Total number of messages in the array. The value can be zero if there were no messages when the Log property was requested.
Error Code	BSTR	A message string identifier.
Severity Code	Long	The following are the SC_MessageLogSeverityLevels severity codes: SCD_ESL_NONE � No severity code was assigned. SCD_ESL_INFORMATION � Information message. SCD_ESL_WARNING � Warning message. ESD_ESL_ERROR � Error message.
Message	BSTR	Message text.
Model Set Id	SC_MODELSETID	An identifier of a model set associated with a message. An element has the VARIANT type VT_EMPTY if no data was provided.
Object Type	SC_CLSID	Class identifier for a model object associated with a message. An element has the VARIANT type VT_EMPTY if no data was provided.
Object Id	SC_OBJID	Identifier for a model object associated with a message. The identifier is unique in the scope of the model set. An element has the VARIANT type VT_EMPTY if no data was provided.
Property Type	SC_CLSID	Class identifier for a property associated with a message. An element has the VARIANT type VT_EMPTY if no data was provided.
Reserved	�	Always marked as VT_EMPTY.

For information about object class identifiers and property class identifiers, see the HTML document erwin Metamodel Reference, in the Metamodel Reference Bookshelf located in the erwin� Data Modeler installation folder. More information about using the Model Set Identifier to locate a model set is located in the Accessing a Model and Accessing a Model Set sections. More information about using the Class Identifier to learn more about object types and property types is located in the Accessing Metamodel Information section. More information about using the Object Identifier to access the associated model object is located in the Accessing Objects in a Model section.