PPT: Sample Code to Change the Chart Type of a Graph

MORE INFORMATION

Microsoft provides programming examples for illustration only, without warranty either expressed or implied. This includes, but is not limited to, the implied warranties of merchantability or fitness for a particular purpose. This article assumes that you are familiar with the programming language that is being demonstrated and with the tools that are used to create and to debug procedures. Microsoft support engineers can help explain the functionality of a particular procedure, but they will not modify these examples to provide added functionality or construct procedures to meet your specific requirements. Before you can run the sample Visual Basic macro, you must add a reference to the Graph 8.0 object model. Follow these steps to add the reference:

1. On the Tools menu, point to Macros, and then click Visual Basic Editor.
2. On the Tools menu, click References.
3. In the "References - VBAProject" dialog box, click to select the "Microsoft Graph 8.0 Object Library" check box.
4. Click OK.
   
   You now have a reference (in this project) to the Graph 8.0 object model.

Sample Visual Basic Procedure

   Sub ChangeChartType()

      Dim oGraphShape As PowerPoint.Shape
      Dim oGraph As Graph.Chart

      ' Set up an array to hold different chart types.
      Dim lChartTypeArray(1 To 5) As Long

      ' Populate the array with different chart types.
      lChartTypeArray(1) = xl3DPie
      lChartTypeArray(2) = xl3DColumn
      lChartTypeArray(3) = xlBubble3DEffect
      lChartTypeArray(4) = xlPyramidBarStacked
      lChartTypeArray(5) = xlSurfaceTopView

      ' Create a new presentation.
      Dim oPres As PowerPoint.Presentation
      Set oPres = PowerPoint.Presentations.Add

      Dim x As Long
      For x = 1 To 5

         ' Create a new slide.
         oPres.Slides.Add x, ppLayoutBlank

         With oPres.Slides(x)

            ' Create the Graph object.
            Set oGraphShape = .Shapes _
               .AddOLEObject(0,0,oPres.PageSetup.SlideWidth, _
               oPres.PageSetup.SlideHeight, _
               "MSGraph.Chart", _
               Link:=msoFalse)

         End With

         ' Get an object reference to the Graph you just created.
         Set oGraph = oGraphShape.OLEFormat.Object

         ' Set the chart type.
         oGraph.ChartType = lChartTypeArray(x)

         ' Release the reference.
         Set oGraph = Nothing

      Next x

   End Sub