Preventing items from being dropped into a container - Diagramming Components

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Preventing items from being dropped into a container (Read 2262 times)

matt.s Junior Member Offline I love YaBB 1G - SP1! Posts: 56 Joined: Apr 3^rd, 2008	Preventing items from being dropped into a container Feb 27^th, 2012 at 10:53am	Print Post
	Hi, I'd like to control and restrict which nodes can be placed inside a container. I can see the ContainerChildAdded event, but there does not appear to be a Cancel property on the EventArgs which would allow me to prevent a certain operation from happening. Is this possible to do? Thanks Matt


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Stoyo God Member Offline MindFusion support Posts: 13230 Joined: Jul 20^th, 2005	Re: Preventing items from being dropped into a container Reply #1 - Feb 27^th, 2012 at 2:56pm	Print Post
	Hi, There's no validation event available yet for this. You could use NodeModifying instead: Code private void OnNodeModifying(object sender, NodeValidationEventArgs e) { var mousePos = Mouse.GetPosition(diagram.DocumentPlane); var ctr = diagram.GetNodeAt(mousePos, true, true) as ContainerNode; if (ctr != null /* and e.Node should not be hosted in container */) e.Cancel = true; } I hope that helps, Stoyan


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matt.s Junior Member Offline I love YaBB 1G - SP1! Posts: 56 Joined: Apr 3^rd, 2008	Re: Preventing items from being dropped into a container Reply #2 - Feb 27^th, 2012 at 3:15pm	Print Post
	Hi Stoyan, Yes this works. Once again, thanks for the quick reply. Matt


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