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Normal Topic Behavior.Modify (Read 1568 times)
tmtton
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Behavior.Modify
Dec 5th, 2008 at 3:33pm
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Thanks for your great support.

diagramView1.behavior=Behavior.Modify almost gives us what we need. No new item is created; but the new item (e.g. a ShapeNode) still shows up and then gets removed. How do I prevent the node from even showing up?
  
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Stoyo
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Re: Behavior.Modify
Reply #1 - Dec 5th, 2008 at 4:20pm
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There is a selection rectangle drawn when Behavior == Modify and you start dragging with the mouse. Is that you take for a new node?
  
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tmtton
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Re: Behavior.Modify
Reply #2 - Dec 5th, 2008 at 4:25pm
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Yes. No selection rectangle drawn when a user drags with the mouse.
  
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Stoyo
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Re: Behavior.Modify
Reply #3 - Dec 5th, 2008 at 5:50pm
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You will have to create a custom Behavior class. Derive from ModifyBehavior, override the StartDraw method, and if you detect that the base class returns an InteractionState whose Action is set to Create, return null instead. Assign an instance of your class to the DiagramView.CustomBehavior property.

I hope that helps,
Stoyan
  
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