0 Replies Latest reply on Jun 13, 2017 10:30 AM by John Alexander

    Entries in GetAttachedEntityTypes and GetAttachedEntities3 do not correspond

    John Alexander

      I'm still working on the macro described in this post: GetVisibleEntities causes crash when type is swViewEntityType_SilhouetteEdge


      I've implemented a sort of roundabout workaround that was described therein. Now the existence of silhouette edges has introduced a new problem.


      Part of my macro's functionality is to update existing machine mark annotations so that they agree with the values saved into the face to which they are attached. Those values could change after the annotations are created so it is necessary to traverse all annotations and update their style (single,double, triple nabla).



      This worked fine until I started inserting machine marks on silhouette edges. With marks attached to silhouette edges, I'm getting type mismatch errors.


      In order to determine which face a machine mark corresponds to, I need to call Annotation::GetAttachedEntities3. This function returns an array of entities. The type of those entities is obtained by calling Entity::GetType on each entity in that array or by calling Annotation::GetAttachedEntityTypes. The latter returns an "Array of longs or integers (see Long vs. Integer) that indicate the attached entity types as defined in swSelectType_e".


      The bold line in the following function is where "type mismatch" is being thrown. Clearly I am checking whether or not this is an edge before attempting to assign it to swEntity.


      Public Function getExistingMark(swVisibleEdge As SldWorks.edge, existingMarks As Variant) As SldWorks.SFSymbol

          Dim swAnnotation    As SldWorks.Annotation

          Dim swSFSymbol      As SldWorks.SFSymbol

          Dim swEntity    As SldWorks.Entity

          Dim swEdge      As SldWorks.edge


          Dim swAttachedEntityType    As swSelectType_e


          Dim vSFSymbol   As Variant

          Dim vAttachedEntityTypes    As Variant

          Dim vAttachedEntity         As Variant

          Dim vAttachedEntities       As Variant


          Dim i As Integer

          Dim which_mark As Integer

          Dim oldID As Integer

          Dim newID As Integer



          oldID = swVisibleEdge.GetID

          newID = oldID + 11

          swVisibleEdge.SetId newID


          Set getExistingMark = Nothing

          which_mark = 0


          If IsArrayAllocated(existingMarks) Then

              For Each vSFSymbol In existingMarks

                  Set swSFSymbol = vSFSymbol

                  If Not swSFSymbol Is Nothing Then

                      Set swAnnotation = swSFSymbol.GetAnnotation

                      vAttachedEntityTypes = swAnnotation.GetAttachedEntityTypes

                      vAttachedEntities = swAnnotation.GetAttachedEntities3

                      If IsArrayAllocated(vAttachedEntityTypes) And IsArrayAllocated(vAttachedEntities) Then

                          For i = LBound(vAttachedEntityTypes) To UBound(vAttachedEntityTypes)


                              If vAttachedEntityTypes(i) = swSelectType_e.swSelEDGES Then

                                  Set swEntity = vAttachedEntities(i)

                                  Set swEdge = swEntity

                                  If swEdge.GetID = swVisibleEdge.GetID Then

                                      Set getExistingMark = swSFSymbol

                                      Set existingMarks(which_mark) = Nothing

                                      Exit For

                                  End If

                              End If

                          Next i

                      End If

                      If Not getExistingMark Is Nothing Then

                          Exit For

                      End If

                  End If

                  which_mark = which_mark + 1

              Next vSFSymbol

          End If

          swVisibleEdge.SetId oldID

      End Function


      Upon further investigation, I can see that there is no guarantee of correspondence between the types returned by GetAttachedEntityTypes and the type of the objects that are returned by GetAttachedEntities3.


      a) I would expect this function to always return an array of entities. The fact that there are objects in that returned array that raise a type mismatch when I attempt to assign them to entities would indicate that the function was given the wrong name.


      b) When the function manages to return actual entities, I would expect the order of entities returned to correspond to the order of types returned by the two aforementioned functions.