PPT: Sample VB Code to Check for Open Presentation

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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. NOTE: In the sample below, IsPresentationOpen checks to see if a presentation named "test.ppt" is open. In your code, replace this file name with the name of your presentation.

Sample Visual Basic Procedures

   Sub Driver()

      Dim IsOpen As Boolean

      ' Check to see whether test.ppt is open.
      IsOpen = IsPresentationOpen("test.ppt")

      ' Process the return value from IsPresentationOpen.
      If IsOpen = True Then
         MsgBox "The presentation is open.", vbInformation
      Else
         MsgBox "The Presentation is not open.", vbInformation
      End If

   End Sub

   ' Function Name: IsPresentationOpen()
   ' Arguments:     A string that represents the name of the presentation.
   '                The string can include the full path or just the
   '                presentation name.
   ' Returns:       True if the presentation is open
   '                False if the presentation is not open

   Function IsPresentationOpen(strPresName As String) As Boolean

      ' An object reference to a presentation.
      Dim oPresObject As Presentation

      Dim boolIsFullPath As Boolean

      ' Check to see whether the full path was passed.
      If (InStr(1, strPresName, ":\")) = 0 Then
         boolIsFullPath = False
      Else
         boolIsFullPath = True
      End If

      ' Loop through the open presentations.
      For Each oPresObject In PowerPoint.Presentations

         If boolIsFullPath = True Then

            ' Check for a match.
            If (StrComp(oPresObject.FullName, _
                     strPresName, _
                     vbTextCompare) = 0) Then

               IsPresentationOpen = True
               Exit Function
            End If

         Else

            ' Check for a match.
            If (StrComp(oPresObject.Name, _
                     strPresName, _
                     vbTextCompare) = 0) Then
               IsPresentationOpen = True
               Exit Function
            End If

         End If

      Next oPresObject

      ' No match found.
      IsPresentationOpen = False

   End Function