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Connectors

Published on October 15, 2012 by David Parker

Adding More Smartness to Visio Connectors

Whenever I have been asked why I like Visio so much, I have usually cited its ability to connect shapes together; its ability to link to data; and its programmability. Visio 2010 formally added a structured diagram concept and API, and the premium edition introduced diagram validation. So many different types of Visio diagrams require elements to be connected together correctly, and I often have to add a little extra into the connectors to make them smarter.

What is a connector?

A connector is a Visio shape that has 1-D behavior. The most used example is the Dynamic connector shape, which not only connects elements together, but can also re-route itself according to the layout and routing options selected for a page.

[Read more…] about Adding More Smartness to Visio Connectors

Filed Under: Connectors, ShapeSheet Formulas, Visio Tagged With: Connectors, ShapeSheet Functions

Published on February 15, 2010 by David Parker

Writing rules to validate diagrams in Visio 2010 – A worked example

Microsoft Visio 2010 Premium Edition introduced an extension to the Visio Type Library called the Validation API. This provides the capability to validate a Visio diagram to ensure that its construction complies with industry-standard or company –wide rules.

Organizations are able to use this new feature to encapsulate business logic as validation rules, grouped within rule sets.

Microsoft Visio 2010 Premium edition contains rule sets for use with Basic and Cross-Functional Flowcharts, BPMN Diagrams and SharePoint Workflow Designer diagrams.

This article describes how you can create your own rule sets and rules.

[Read more…] about Writing rules to validate diagrams in Visio 2010 – A worked example

Filed Under: Connections, Connectors, Containers, Validation, Visio 2010 Tagged With: Validation, Visio Rules

Published on September 16, 2009 by David Parker

Listing Connections in Visio 2010

One of the best bits of Visio is the connections between shapes, but it has always been difficult to understand these connections in code.  There are connections to and from shapes, which require you to understand where you are and which way to look … at the beginning or the end of a 1D connector. Visio 2010 has added some useful extra methods to the shape object which makes understanding connections much easier.  This post will show you how you can use the new GluedShapes() and ConnectedShapes() methods.

Take, for example, a network diagram where there are connections between servers and routers:

image

You may wish to list the connections at the start and end of each cable.  Previously, this would have meant inspecting the connected cell to see if was at the beginning or end of the line, but now you can use the GluedShapes() method of a shape to retrieve an array of the 2D shapes connected at one end or another with the relevant arguments, visGluedShapesIncoming2D or visGluedShapesOutgoing2D.  The ListGluedConnections macro below displays the following in the immediate window:

Connector     Dynamic connector
>             Router.45     router-02
<             Server        server-01 Connector     Dynamic connector.107 >             Router.45     router-02
<             Server.30     server-02 Connector     Dynamic connector.108 >             Router        router-01
<             Server.75     server-03 Connector     Dynamic connector.109 >             Router.91     router-03
<             Server.30     server-02 Connector     Dynamic connector.110 >             Router.91     router-03
<             Server        server-01
Public Sub ListGluedConnections()
Dim shp As Visio.Shape
Dim connectorShape As Visio.Shape
Dim sourceShape As Visio.Shape
Dim targetShape As Visio.Shape
Dim aryTargetIDs() As Long
Dim arySourceIDs() As Long
Dim targetID As Long
Dim sourceID As Long
Dim i As Integer

For Each shp In Visio.ActivePage.Shapes
    If shp.OneD Then
        Debug.Print "Connector", shp.Name
        arySourceIDs = shp.GluedShapes(visGluedShapesIncoming2D, "")
        For i = 0 To UBound(arySourceIDs)
            Set sourceShape = Visio.ActivePage.Shapes.ItemFromID(arySourceIDs(i))
            If sourceShape.CellExists("Prop.NetworkName", Visio.visExistsAnywhere) Then
                Debug.Print , ">", sourceShape.Name, sourceShape.Cells("Prop.NetworkName").ResultStr("")
            End If
        Next
        aryTargetIDs = shp.GluedShapes(visGluedShapesOutgoing2D, "")
        For i = 0 To UBound(aryTargetIDs)
            Set targetShape = Visio.ActivePage.Shapes.ItemFromID(aryTargetIDs(i))
            If targetShape.CellExists("Prop.NetworkName", Visio.visExistsAnywhere) Then
                Debug.Print , "<", targetShape.Name, targetShape.Cells("Prop.NetworkName").ResultStr("")
            End If
        Next
    End If
Next

End Sub

Similarly, you may want to simply list the next connected 2D shape, effectively ignoring the cable.  In this case, you can use the new ConnectedShapes() method, with the relevant arguments visGluedShapesIncoming2D or visGluedShapesOutgoing2D, to produce an output like the following ( using the ListNextConnections macro below):

Shape         Server        server-01
>             Router.45     router-02
>             Router.91     router-03
Shape         Router        router-01
<             Server.75     server-03 Shape         Server.30     server-02 >             Router.45     router-02
>             Router.91     router-03
Shape         Router.45     router-02
<             Server        server-01
<             Server.30     server-02 Shape         Server.75     server-03 >             Router        router-01
Shape         Router.91     router-03
<             Server        server-01
<             Server.30     server-02
Public Sub ListNextConnections()
Dim shp As Visio.Shape
Dim connectorShape As Visio.Shape
Dim sourceShape As Visio.Shape
Dim targetShape As Visio.Shape
Dim aryTargetIDs() As Long
Dim arySourceIDs() As Long
Dim targetID As Long
Dim sourceID As Long
Dim i As Integer

For Each shp In Visio.ActivePage.Shapes
    If Not shp.OneD Then
        If shp.CellExists("Prop.NetworkName", Visio.visExistsAnywhere) Then
            Debug.Print "Shape", shp.Name, shp.Cells("Prop.NetworkName").ResultStr("")
            arySourceIDs = shp.ConnectedShapes(visConnectedShapesOutgoingNodes, "")
            For i = 0 To UBound(arySourceIDs)
                Set sourceShape = Visio.ActivePage.Shapes.ItemFromID(arySourceIDs(i))
                If sourceShape.CellExists("Prop.NetworkName", Visio.visExistsAnywhere) Then
                    Debug.Print , "<", sourceShape.Name, sourceShape.Cells("Prop.NetworkName").ResultStr("") End If Next aryTargetIDs = shp.ConnectedShapes(visConnectedShapesIncomingNodes, "") For i = 0 To UBound(aryTargetIDs) Set targetShape = Visio.ActivePage.Shapes.ItemFromID(aryTargetIDs(i)) If targetShape.CellExists("Prop.NetworkName", Visio.visExistsAnywhere) Then Debug.Print , ">", targetShape.Name, targetShape.Cells("Prop.NetworkName").ResultStr("")
                End If
            Next
        End If
    End If
Next

End Sub

I think this makes interrogation of connected diagrams, of all flavours, much simpler, though I would love to have similar ShapeSheet functions too!

Filed Under: Connections, Connectors, VBA, Visio 2010

Published on April 20, 2008 by David Parker

Setting Visio Shape Cell Values By Connections

A recent newsgroup poster asked me to explain how to set the line color and weight of a connector according to the shapes it is connected to.  So, in this article, I have tried to explain one method of achieving this with minimal external coding.

In this example, I have created a rectangle shape that has a single Shape Data row, MyData, which has a fixed list of values, A;B;C.

The connector shape has been modified to trigger an event whenever a connection is made or unmade.  If the user successfully connects two rectangles with the same MyData value, then the line (weight and color) of the connector shape is amended to match the rectangle shapes.

image
[Read more…] about Setting Visio Shape Cell Values By Connections

Filed Under: Connections, Connectors, VBA, Visio

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