Difference in copy

GoXam
1

Hi Walter,
I have a strange behavior in my diagram.
If I select a node and press ctrl-c and ctrl-v a new node is created. This node is complete different from the original node. That means in my node-class there are two collections (I explained you some time ago: a collection of displays and a collection of functions) and in the copied node these collections are new instances too (which is exact what I want).

Now, if I hold the ctrl-key and move a node, the diagram creates a copy of this node - but this time the collections of the two nodes are the same. That means if I change the color of a display in the first node, the second node also changes it’s color (that is not what I want).

Where is the difference between the two copy behaviors and how can I fix that?

2

Does your data implement ICloneable, and if so, does it properly make a deep copy of the data, rather than a shallow copy?

Or you can override GraphLinksModel.CopyNode1 to do that.

Or does it inherit from GraphLinksModelNodeData? If so, you can override its Clone method.

3

No it doesn’t!
But why there is the difference?

4

Does your data implement ISerializable? That’s doing a copy for you automatically, to and from the clipboard. There’s no clipboard involved when using the DraggingTool.

5

Yes, the data implements ISerializable!
That’s the reason than.
I’ll give it a try.