PPT97: VB Code to Connect to the Viewer 97 Object Model

MORE INFORMATION

Before you write the code to control the Viewer, add a reference to the object model for the Viewer, using these steps:

Visual Basic Editor

1. Start the Visual Basic Editor.
2. On the Tools menu, click References.
3. In the Available References list, click the following item:

   Microsoft PowerPointViewer 8.0 Object Library

4. Click OK.

Microsoft Visual Basic 5.0

1. Open the Project in Visual Basic.
2. On the Project menu, click References.
3. In the Available References list, click the following item:

   Microsoft PowerPointViewer 8.0 Object Library

4. Click OK.

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   Sub ConnectToViewer()

   ' Used for error trapping.
   On Error Resume Next
   Err.Clear

   ' Declare a variable which is used to store an object
   ' reference to the 97 Viewer.
   Dim oViewer As PowerPointViewer.Application
   
   Dim bIsViewerRunning As Boolean: bIsViewerRunning = True
   
   ' Attempt to get a reference to the PowerPoint Viewer
   ' object model. If the Viewer is running GetObject will
   ' succeed.
   Set oViewer = GetObject(, "PowerPointViewer.Application.8")
   
   ' Check if an error occurred when using GetObject
   If Err.Number <> 0 Then
   
      ' Clear the error object.
      Err.Clear
         
      ' GetObject failed, so lets try to create the object.
      Set oViewer = CreateObject("PowerPointViewer.Application.8")
      
      ' Check if error occurred when using CreateObject.
      If Err.Number <> 0 Then
         
         ' Enter code to handle the situation where GetObject and
         ' CreateObject fails.
         MsgBox "Cannot find Microsoft PowerPoint Viewer 97.", _
            vbCritical
         
         ' End the Macro.
         End
      End If
      
      ' The Viewer was started by the macro.
      bIsViewerRunning = False
      
   End If
   
   ' Display the name of the viewer in a message box.
   MsgBox oViewer.Name
   
   ' Quit the viewer if started by the macro.
   If bIsViewerRunning = False Then
      oViewer.Quit
   End If
   
   End Sub