Hi,

I have a Table Node and a Shape Node with an image Attached to the Table (AttachToNode.TopLeft)

The problem is when I delete the Table (AutoDeleteItems is True), everything is deleted right but when Undo is done, the table is back but the Shape node is invisible because is behind the table.

If I click the table the shape node with the image is visible again.

Any suggestions.

Thanks.

No, I was not using StartComposite.

I'm testing with this example that comes in the help file:

' Implicitly created undo records will be saved here
Dim composite As CompositeCmd = diagram.UndoManager.StartComposite("Create group")

' Call methods that create undo records
Dim node1 As ShapeNode = diagram.Factory.CreateShapeNode(0, 0, 30, 30)
Dim node2 As ShapeNode = diagram.Factory.CreateShapeNode(0, 0, 15, 15)
Dim g As Group = diagram.Factory.CreateGroup(node1)
g.AttachToCorner(node2, 0)

' This goes to the active composite too
Dim change As ChangeItemCmd = New ChangeItemCmd(node2, "")
node2.Locked = True
change.Execute()

' Save the active composite in history
composite.Execute()


but I get an error in the composite.Execute call:
Object reference not set to an instance of an object.
Is there anything wrong?

Stoyan,

Thanks for your answer, but I still don't get it right.

Please try this simple code:

Private Sub CreateGroup()

doc.UndoManager.UndoEnabled = True

Dim composite As CompositeCmd = New CompositeCmd(doc, "Create Group", True)
Dim node1 As ShapeNode = doc.Factory.CreateShapeNode(0, 0, 30, 30)
Dim node2 As ShapeNode = doc.Factory.CreateShapeNode(0, 0, 15, 15)

Dim g As Group = doc.Factory.CreateGroup(node1)
g.AttachToCorner(node2, 0)

node2.Image = images.Images(5)
node2.Locked = True
node1.SubordinateGroup.AutoDeleteItems = True

composite.Execute()

End Sub

1. Use your own image in node 2
2. Now delete the group
3. Now Undo

You get the node 1 and node2 back , but node2 is behind node1.

If you click node1, you will see node2 and its image but if you click the view again, node2 will dissapear.