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MathGroup Archive 2004

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GUIKit and GraphEdit

  • To: mathgroup at smc.vnet.net
  • Subject: [mg50921] GUIKit and GraphEdit
  • From: darkness_wizard at hotmail.com (Wishmaster7)
  • Date: Tue, 28 Sep 2004 00:58:30 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

hi all.

I am working with the graph edit and I add some actions to buttons, in
order to apply changes to the graph.

With this graph, you can select squares or arcs. Is there a way to
know which is the selected arc? The idea is to select an arc, and then
modify the value of the weight of this arc.

I try to do this with a script added to a widget button. The code for
the graph panel is the following :

Widget["Graph/GraphPanel", {"preferredSize" -> Widget[
  "Dimension", {"width" -> 600, "height
      " -> 400}]}, ExposeWidgetReferences -> {"
        graphModel"}, Name -> "graphPanel"]

the button gets the PropertyValue[{"graphPanel", "expr"}] which is the
representation of the graph. For example :
{{1, 1} -> a, {1, 2} -> b, {2, 2} -> c, {2, 3} -> d, {_, _} -> 0}

now if I know that the user has selected a particular arc, I can do
some changes to the value of this arc and apply these changes to the
graph.

I hope this is something we can do. I search a way to do that, and if
someone can help me saving time, I will be very thankful.

Wishmaster7


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