How to delete Component in a CompositeNode use by Delete key press. - Diagramming Components

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How to delete Component in a CompositeNode use by Delete key press. (Read 1380 times)

GrandSon YaBB Newbies Offline I Love MindFusion! Posts: 10 Joined: Nov 26^th, 2023	How to delete Component in a CompositeNode use by Delete key press. May 20^th, 2024 at 8:24am	Print Post
	I want remove selected* Component(extends ComponentBase) in a CompositeNode. (*MyClass has IsSelected original property) I implemements DiagramView.MouseDown event handler like below: Code (C++) private void DiagramView_KeyDown(object? sender, KeyEventArgs e) { if(!Keys.Delete.Equals(e.KeyData)) return; foreach(var child in Children) { if(child.IsSelected) Delete(child); } } It is worked, but parent CompositeNode is deleted too. I need extends DiagramView and override ProcessCmdKey to achive this?


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Slavcho YaBB Moderator Offline tech.support Posts: 3408 Joined: Oct 19^th, 2005	Re: How to delete Component in a CompositeNode use by Delete key press. Reply #1 - May 20^th, 2024 at 8:54am	Print Post
	If you don't need to delete diagram items using Del key at all, set DiagramView.DelKeyAction = None. If you need to prevent it selectively, handle the NodeDeleting validation event and set args.Cancel. E.g. args.Cancel = args.Node is CompositeNode && node contains selected components; Regards, Slavcho Mindfusion


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GrandSon YaBB Newbies Offline I Love MindFusion! Posts: 10 Joined: Nov 26^th, 2023	Re: How to delete Component in a CompositeNode use by Delete key press. Reply #2 - May 21^st, 2024 at 5:11am	Print Post
	Thank you so much. I got it. I'll use NodeDeleted event.


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Slavcho YaBB Moderator Offline tech.support Posts: 3408 Joined: Oct 19^th, 2005	Re: How to delete Component in a CompositeNode use by Delete key press. Reply #3 - May 21^st, 2024 at 6:50am	Print Post
	Quote: I'll use NodeDeleted event you mean NodeDeleting


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