SplicesIntoLink

GoXam
#1

Hi

I have set go:Part.DropOntoBehavior="SplicesIntoLink" in my go:LinkPanel but its not working. Nothing happens when dropping nodes on links. What can be the problem?
Regards
Henrik
#2

Did you enable the behavior by setting DraggingTool.DropOntoEnabled to true?
You can see examples of this in the demo.

#3

Ahh, just figured it out. Thanks!

#4

Hi again,

I need to cutomize the behavior of DropOnTo and have looked at the Piping sample.
I get error on line:
Link overlink = this.Diagram.Panel.FindElementAt(pt, Part.FindAncestor, p => ConsiderDragOver(pt, p), SearchLayers.Links);
or in my code (VB):
Dim overlink As Link = Me.Diagram.Panel.FindElementAt(Of Link)(pt, Part.FindAncestor(Of Link), Function(p) ConsiderDragOver(pt, p), SearchLayers.Links)
The error message is:
Argument not specified for parameter 'elt' of 'Public Shared Function FindAncestor(Of T As System.Windows.Media.Visual)(elt As System.Windows.Media.Visual) As T'.
/Henrik
#5

Hmmm, I’m not familiar enough with VB to know how to specify functional parameters that are static generic methods.

In C# the second argument to FindElementAt is the expression “Part.FindAncestor”.
This expression returns a method that takes a Visual as its single argument and returns a Link.

Apparently in VB “Part.FindAncestor(Of Link)” looks like a regular function call that is missing its argument list. Maybe you can prefix that with “AddressOf”? I’m just guessing.

#6
For anyone else using VB, this works:
Dim elt = Me.Diagram.Panel.FindElementAt(Of UIElement)(Pt, Function(e) e, Nothing, SearchLayers.Links)
If Not elt Is Nothing Then
Dim link As Link = Part.FindAncestor(Of Link)(elt)
End If
/Henrik