Hello
I create a node in this way:


          var newobject = new customnode();
          var node = new DiagramNodeAdapter(form, newobject);
           node.MouseLeftButtonDown += new MouseButtonEventHandler(mymousevent);
           node.SizeSyncMode = SizeSyncMode.SetSize;
           node.Bounds = new Rect(e.MousePosition, new Size(100, 100));
           form.Nodes.Add(node);
           node.HandlesStyle = HandlesStyle.Custom;
           node.Selected = true;




Then on the for i have something like:

    private void mymousevent(object sender, MouseButtonEventArgs e)
   {
   //my coder to execute
    }



node.MouseLeftButtonDown += new MouseButtonEventHandler(mymousevent);
is not fired !
Some idea why?

I alreay try node.PreviewMouseLeftButtonDown += new MouseButtonEventHandler etc etc
Not work!

node.MouseInputMode = HandledByControl,  ?
That o exists : (

Using node.MouseInputMode = MouseInputMode.HandledByHostedControl;
No fix the problem, and also no is usefull due after that cant resize node using the handlers

Sorry, not understand, som example please.
Anyway no any of this solution work, event never fired.
Some solution please?
THK!

Sorry but that not work is the first thing i test before post here  in the forum 

Adding the code below to the FormEditor example shows the debug output for all the types of controls there. If that doesn't work for your customnode control, I suppose it simply never raises the event. You could check if there is some OnPreviewMouseLeftButtonDown override that does not call base - that would prevent the event from being raised.

private void form_NodeCreated(object sender, NodeEventArgs e)
{
	var adapter = (DiagramNodeAdapter)e.Node;
	adapter.Control.PreviewMouseLeftButtonDown += OnCtrlMouseLeftButtonDown;
	adapter.MouseInputMode = MouseInputMode.HandledByHostedControl;
}

void OnCtrlMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
	Debug.WriteLine("mouse down");
} 

I hope that helps,
Stoyan

You could try the following to raise the standard PreviewMouseLeftButtonDown event at any time, or otherwise define and raise your custom event using the usual .NET event pattern.

base.OnPreviewMouseLeftButtonDown(
     new MouseButtonEventArgs(Mouse.PrimaryDevice, DateTime.Now.Millisecond, MouseButton.Left));

I hope that helps,
Stoyan