Knowledge Base

ACC: How to Display Microsoft PowerPoint Slides on a Form

Article ID: 149088

Article Last Modified on 1/19/2007

APPLIES TO

This article was previously published under Q149088

SUMMARY

Advanced: Requires expert coding, interoperability, and multiuser skills.

This article shows you how to display slides from Microsoft PowerPoint 7.0 or 97 on a form in Microsoft Access 7.0 or 97, respectively. This technique uses OLE Automation in Microsoft Access to open a PowerPoint presentation and to link to the first slide. Viewing other slides is accomplished by changing the SourceItem property, which enables you to link to different slides.

NOTE: This OLE-linking approach is the most viable method for viewing Microsoft PowerPoint slides on a form in Microsoft Access. It is not possible to use Automation to run a Microsoft PowerPoint presentation directly from an object frame control on a form.

This article assumes that you are familiar with Visual Basic for Applications and with creating Microsoft Access applications using the programming tools provided with Microsoft Access. For more information about Visual Basic for Applications, please refer to your version of the "Building Applications with Microsoft Access" manual.

MORE INFORMATION

NOTE: You must have both Microsoft PowerPoint 7.0 or 97 and Microsoft Access 7.0 or 97 installed on your computer in order to use this technique. You also need to create a Microsoft PowerPoint presentation (.ppt). In steps 7 and 9, replace the file name

C:\Msoffice\Powerpnt\Pptexample.ppt

with the name and path of your file.

The following example creates a form with an unbound object frame control and five command buttons for linking to a Microsoft PowerPoint presentation (.ppt) and for navigating through its slides.

To display Microsoft PowerPoint slides on a form, follow these steps:

  1. Open Microsoft Access and create a new form in Design view.
  2. Add the following five controls to the form: 
           Command button:
          Name: insertShow
          Caption: Get Presentation
          Enabled: Yes

       Command button:
          Name: frstSlide
          Caption: First Slide
          Enabled: No

       Command button:
          Name: nextSlide
          Caption: Next Slide
          Enabled: No

       Command button:
          Name: previousSlide
          Caption: Previous Slide
          Enabled: No

       Command button:
          Name: lastSlide
          Caption: Last Slide
          Enabled: No
  3. Add an unbound object frame control to the form. In the Insert Object box, click the Create New button, select Bitmap Image as the Object Type, and then click OK. In the Bitmap Image box, click "Exit & Return to <formname>: Form" on the File menu. Note that the object frame appears as a blank space on the form.
  4. Display the property sheet for the unbound object frame, and then set its properties as follows: 
           Unbound Object Frame:
          Name: pptFrame
          SizeMode: Zoom
          Enabled: Yes
          Locked: No
  5. On the View menu, click Code to open the form module.
  6. Add the following code to the General Declarations section: 
           ' Initialize variables.
       Const FIRSTSLIDE = 256
       Dim pptobj As Object
       Dim slideindex As Long, slidecount As Long

     Add the following error handling procedure:

       Sub ErrHandler()

          Dim strError As String
          Dim errObj As Error
          strError = " "
          If DBEngine.Errors.Count > 0 Then
             For Each errObj In DBEngine.Errors
                strError = strError & Format$(errObj.Number)
                strError = strError & " : " & errObj.Description
                strError = strError & " (" & errObj.Source & ") . "
                strError = strError & Chr$(13) & Chr$(10)
             Next
             MsgBox strError
          Else
             MsgBox "Error: " & Err & " " & Error
          End If

       End Sub
  7. Click Form in the Object list and click Load in the Procedure list, and then add the following code:

    NOTE: Replace the file name "C:\Msoffice\Powerpnt\Pptexample.ppt" with the name and path of your Power Point Presentation file. 
           Private Sub Form_Load()
          On Error GoTo Form_Load_Error
          Dim holder As Long, present As Object

          ' Start Microsoft Powerpoint and open an existing presentation.
          holder = Shell("c:\msoffice\powerpnt\powerpnt.exe")
          Set pptobj = CreateObject("PowerPoint.Application")
          Set present = pptobj.Presentations.Open _
             ("c:\msoffice\powerpnt\pptexample.ppt")

          ' Determine the number of slides in the presentation.
          slidecount = present.Slides.Count - 1 + FIRSTSLIDE

          ' Close the presentation. Use only 1 of the following lines
          'Office 97 Syntax
          pptobj.Presentations _
             ("c:\msoffice\powerpnt\pptexample.ppt").Close
          'Office 7.0 Syntax
          present.Close
          Set present = Nothing
          Exit Sub

       Form_Load_Error:
          ErrHandler
          Exit Sub
       End Sub
  8. Click Form in the Object list and click Unload in the Proclist, and then add the following code: 
           Private Sub Form_Unload(Cancel As Integer)
       On Error GoTo Form_Unload_Error

          ' Close Powerpoint.
          pptobj.Quit

       Exit Sub

       Form_Unload_Error:
          ErrHandler
          Exit Sub
       End Sub
  9. Click insertShow in the Object list and click Click in the Proc list, and then add the following code.

    NOTE: Replace the file name "C:\Msoffice\Powerpnt\Pptexample.ppt" with the name and path of your PowerPoint Presentation file. 
           Private Sub insertShow_Click()
          On Error GoTo insertShow_Click_Error

          ' Make object frame visible and enable "navigation" buttons.
          pptFrame.Visible = True
          frstslide.Enabled = True
          lastslide.Enabled = True
          nextslide.Enabled = True
          previousslide.Enabled = True

          ' Specify OLE Class, Type, SourceDoc, SourceItem and other
          ' properties.
          With pptFrame
             'Use only 1 of the followin lines of code
             .Class = "Microsoft Powerpoint Slide" 'Office 97 Syntax
             .Class = "powerpoint.slide.7" 'Office 7.0 syntax
             .OLETypeAllowed = acOLELinked
             .SourceDoc = "c:\msoffice\powerpnt\pptexample.ppt"
             .SourceItem = FIRSTSLIDE
             .Action = acOLECreateLink
          End With

          ' Set slide index to the first slide.
          slideindex = FIRSTSLIDE
          frstSlide.setfocus
          insertShow.enabled=false

          Exit sub

       insertShow_Click_Error:
          ErrHandler
          Exit Sub
       End Sub
  10. Click frstSlide in the Object list and click Click in the Proc list, and then add the following code: 
           Private Sub frstSlide_Click()
          On Error GoTo frstSlide_Click_Error

          ' Set SourceItem property to first slide and create a link.
          With pptFrame
             .SourceItem = FIRSTSLIDE
             .Action = acOLECreateLink
          End With

          slideindex = FIRSTSLIDE

          Exit Sub

       frstSlide_Click_Error:
          ErrHandler
          Exit Sub
       End Sub
  11. Click nextSlide in the Object list and click Click in the Proc list, and then add the following code: 
           Private Sub nextSlide_Click()
          On Error GoTo nextSlide_Click_Error

          ' Determine if current slide is last slide.
          If slideindex< slidecount Then
             slideindex = slideindex + 1

             ' Set SourceItem property to next slide and create a link.
             With pptFrame
                .SourceItem = slideindex
                .Action = acOLECreateLink
             End With
          Else
             MsgBox "This is the last slide."
          End If

          Exit Sub

       nextSlide_Click_Error:
          ErrHandler
          Exit Sub
       End Sub
  12. Click previousSlide in the Object list and click Click in the Proc list, and then add the following code: 
           Private Sub previousSlide_Click()
          On Error GoTo previousSlide_Click_Error

          ' Determine if current slide is first slide.
          If slideindex > FIRSTSLIDE Then
             slideindex = slideindex - 1

             ' Set SourceItem property to previous slide and create a link.
             With pptFrame
                .SourceItem = slideindex
                .Action = acOLECreateLink
             End With
          Else
             MsgBox "This is the first slide."
          End If

          Exit Sub

       previousSlide_Click_Error:
          ErrHandler
          Exit Sub
       End Sub
  13. Click lastSlide in the Object list and click Click in the Proc list, and then add the following code: 
           Private Sub lastSlide_Click()
          On Error GoTo lastSlide_Click_Error

          ' Set SourceItem property to previous slide and create a link.
          With pptFrame
             .SourceItem = slidecount
             .Action = acOLECreateLink
          End With

          slideindex = slidecount

          Exit Sub

       lastSlide_Click_Error:
          ErrHandler
          Exit Sub
       End Sub
  14. Close and save the form module.
  15. Switch the form to Form view, and then click the insertShow ("Get Presentation") button.

REFERENCES

For more information about using Microsoft PowerPoint for Windows 95 and Automation, please see the following article here in the Microsoft Knowledge Base:

133789 WT1229: Getting Started Controlling PowerPoint Through OLE

Keywords: kbhowto kbinterop kbprogramming KB149088


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