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CopyToClipboard (with a ShapeNode derived cl (Read 2750 times)

jpinera YaBB Newbies Offline I love YaBB 1G - SP1! Posts: 10 Joined: Jul 4^th, 2011	CopyToClipboard (with a ShapeNode derived cl Jul 6^th, 2011 at 1:34pm	Print Post
	I have a derived class from ShapeNode. When I select a node (based on that derived class) from the DiagramView and I try to copy to the clipboard (using CopyToClipboard method) an exception is raised. I supose that the problem can be that this is a derived class and there is not way to create a new instace of this class. How can I copy nodes based on a derived class?


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Stoyo God Member Offline MindFusion support Posts: 13230 Joined: Jul 20^th, 2005	Re: CopyToClipboard �(with a ShapeNode derived cl Reply #1 - Jul 6^th, 2011 at 2:38pm	Print Post
	You must override the Clone method and implement the binary serialization methods - SaveTo and LoadFrom.


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jpinera YaBB Newbies Offline I love YaBB 1G - SP1! Posts: 10 Joined: Jul 4^th, 2011	Re: CopyToClipboard �(with a ShapeNode derived cl Reply #2 - Jul 6^th, 2011 at 4:21pm	Print Post
	I overrided Clone method and I implement serialization methods. But is not working. When I copy a node, I see how methods SaveTo and Clone are called. But when I paste the node, LoadFrom is not called. A new node is pasted, but this node is based on ShapeNode class instead my derived class. I added to my class a default contructor, copy constructor and a constructor that has a ShapeNode objects as parameter.


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Stoyo God Member Offline MindFusion support Posts: 13230 Joined: Jul 20^th, 2005	Re: CopyToClipboard �(with a ShapeNode derived cl Reply #3 - Jul 6^th, 2011 at 4:23pm	Print Post
	Also call the RegisterItemClass method from your application init code.


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jpinera YaBB Newbies Offline I love YaBB 1G - SP1! Posts: 10 Joined: Jul 4^th, 2011	Re: CopyToClipboard �(with a ShapeNode derived cl Reply #4 - Jul 7^th, 2011 at 6:34am	Print Post
	, I did not call RegisterItemClass. Once I called it, nodes has been correctly copy and pasted. One last question, can I copy and paste the diagramLinks?. I override Clone and serialization methods for my DiagramLink-based class, but when I try to copy and paste a gruop with nodes and links, it does not work.


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Stoyo God Member Offline MindFusion support Posts: 13230 Joined: Jul 20^th, 2005	Re: CopyToClipboard �(with a ShapeNode derived cl Reply #5 - Jul 7^th, 2011 at 7:29am	Print Post
	Yes, but by default they are pasted only if both their end nodes were also copied. Use the overload that takes an "unconnectedLinks" parameter to paste links whose ends were not copied. However that will also disconnect the link; you will have to reattach it to its original nodes if you expect coping+pasting a single link to create repeating link between the same pair of nodes. Also if you are using a custom link class, the same things apply here - you must override Clone, implement SaveTo and LoadFrom, and register the class for serialization. I hope that helps, Stoyan


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jpinera YaBB Newbies Offline I love YaBB 1G - SP1! Posts: 10 Joined: Jul 4^th, 2011	Re: CopyToClipboard �(with a ShapeNode derived cl Reply #6 - Jul 7^th, 2011 at 9:28am	Print Post
	Thanks a lot, now it working fine !!


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