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Normal Topic subclass DiagramLink (Read 1658 times)
deanhully
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subclass DiagramLink
Sep 17th, 2008 at 5:18pm
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Is it possible (and effective) to subclass DiagramLink?

Dean
  
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Stoyo
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Re: subclass DiagramLink
Reply #1 - Sep 17th, 2008 at 6:08pm
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It is possible, for example adding new properties and customizng the appearance by overriding the Draw method should not be a problem. What do you need subclassing DiagramLink for?

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deanhully
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Re: subclass DiagramLink
Reply #2 - Sep 18th, 2008 at 1:37am
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In our diagram a link may actually represent several links between nodes. If I click on the displayed link I will need to load this info into a toolbox. I was considering subclassing vs maintaining the data separately.

Btw, Stoyan,  thanks very much for your quick and knowledgeable responses.

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Stoyo
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Re: subclass DiagramLink
Reply #3 - Sep 18th, 2008 at 6:57am
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You might store that information in the Tag property of links, without subclassing. Otherwise you could subclass, define a new property for the data, override the SaveTo and LoadFrom methods to implement serialization for the new property, and use the RegisterItemClass method to enable serialization for your link class.

I hope that helps,
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