AcMapMbMapSheetTemplate::GetElement Method

Returns an array of object ids of the objects in the specified layout that are marked as an element of the specified type. 

Returns Acad::eOk if successful; Returns Acad::eKeyNotFound if there are no entities of the specified type; otherwise, returns a different error code.

static Acad::ErrorStatus GetElement(
    AcDbObjectIdArray& aIds, 
    const AcDbObjectId& layoutId, 
    ETemplateElementType elementType
);