PPT: Sample VB Code Adds Multiple New Slides to Presentation

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Sample Visual Basic Procedure

   Sub InsertMultipleSlides()

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

      ' Change this value to the maximum number of slides you want to
      ' create.
      Const MAX_SLIDES As Long = 250

      ' Change this to the auto layout you want to use. This value can be
      ' any PpSlideLayout constant.
      Const DEFAULT_AUTO_LAYOUT As Long = ppLayoutText

      ' Dimension the variables.
      Dim lLastSlide, i As Long
      Dim lToCreate, lResult As Long
      Dim Continue As Boolean
      Dim strInputPrompt, strResult, strPlural As String

      ' Initialize the message for the input box.
      strInputPrompt = "Enter the number of slides you want to create. "

      ' Loop until valid input.
      Do

         ' Ask how many slides do you want to create.
         strResult = InputBox(strInputPrompt)

         ' Check for valid input.
         If strResult = "" Then

            ' If NULL string returned, stop the macro.
            End
         End If

         ' Convert string to integer.
         lToCreate = CLng(strResult)

         ' Check for a type mismatch.
         If Err.Number <> 0 Then

            ' Reset the err object.
            Err.Clear

            ' Repeat the loop.
            Continue = False
         End If

         ' Check for valid entry.
         If lToCreate <= MAX_SLIDES And lToCreate > 0 Then
            Continue = True
         Else
            Continue = False
         End If

         ' Change the message of input box if invalid entry is made.
         If Continue = False Then
            strInputPrompt = "Invalid entry, please enter a value " _
               & "between 1 and " & MAX_SLIDES & "." & Chr(13) _
               & Chr(13) & strInputPrompt
         End If

      Loop Until Continue = True

      ' See whether slides or slide is needed in the MsgBox.
      If lToCreate = 1 Then
         strPlural = "slide"
      Else
         strPlural = "slides"
      End If

      ' Ask for confirmation.
      lResult = MsgBox("Are you sure you want to create " & lToCreate _
       & " new " & strPlural & ", at the end of the presentation, using " _
         & "the Bulleted List auto layout?", vbYesNo + vbQuestion)

      ' Find out what the user selected in the message box.
      If lResult = vbNo Then
         'Stop the Macro.
         End
      End If

      ' Get the number of slides in the active presentation.
      lLastSlide = ActivePresentation.Slides.Count

      ' Create the new slides.
      For i = 1 To lToCreate
         lLastSlide = lLastSlide + 1
         ActivePresentation.Slides.Add lLastSlide, DEFAULT_AUTO_LAYOUT

         ' Find out whether error occurred when creating the new slides.
         If Err.Number <> 0 Then
            MsgBox "Unable to add new slides to the presentation. " _
               , vbCritical, "Error When Adding New Slides"

            ' Stop the macro.
            End
         End If

      Next i

      ' Display closing message.
      MsgBox "Successfully added " & lToCreate & " " & strPlural & _
        " to the active presentation.", vbInformation, "Macro Done"

   End Sub