void OnConnectorDoubleClick(object sender, HyperGraph.GraphControl.NodeConnectorEventArgs e) { var dialog = new HyperGraph.TextEditForm(); dialog.InputText = "1.0f"; // look for an existing simple connection attached to this connector foreach (var i in e.Node.Connections) { if (i.To == e.Connector && i.From == null) { dialog.InputText = i.Name; } } var result = dialog.ShowDialog(); if (result == DialogResult.OK) { bool foundExisting = false; foreach (var i in e.Node.Connections) { if (i.To == e.Connector && i.From == null) { i.Name = dialog.InputText; foundExisting = true; } } if (!foundExisting) { var connection = new NodeConnection(); connection.To = e.Connector; connection.Name = dialog.InputText; e.Node.AddConnection(connection); } ShaderFragmentNodeUtil.InvalidateAttachedConstants(graphControl); } }