PPT7: OLE Automation Error Using Open Method (155073)
The information in this article applies to:
- Microsoft PowerPoint for Windows 95
This article was previously published under Q155073 SYMPTOMS
If you try to use a Microsoft Excel or Word macro, or another Visual Basic
for Applications procedure to open a PowerPoint 95 presentation, you may
receive the following error message:
Runtime Error: '-2147188160 (80048240)':
Presentation.Open invalid request. The PowerPoint Frame Window does
not exist.
CAUSE
This error will occur if you use the Application.Presentations.Open
method before showing the PowerPoint application window at least once.
A simple example of code that will produce this error follows:
Private Sub Form_Load()
Dim ppt As Object
Dim pres As Object
Set ppt = CreateObject("PowerPoint.application.7")
Set pres = ppt.presentations.open("c:\windows\desktop\test.ppt")
End Sub
The error will occur at the "Set Pres..." line.
RESOLUTION
Microsoft provides examples of Visual Basic procedures for illustration
only, without warranty either expressed or implied, including but not
limited to the implied warranties of merchantability and/or fitness for
a particular purpose. This Visual Basic procedure is provided 'as is'
and Microsoft does not guarantee that it can be used in all situations.
Microsoft does not support modifications of this procedure to suit
customer requirements for a particular purpose.
To work around this problem, use the following steps to modify the macro:
- Locate the "Set ppt" and the "Set pres" lines.
- Position the insertion point after the "Set ppt" line, but before the
"Set pres" line.
- Add the following line in the macro:
ppt.AppWindow.Visible = True
The edited macro should resemble the following:
Private Sub Form_Load()
Dim ppt As Object
Dim pres As Object
Set ppt = CreateObject("PowerPoint.application.7")
ppt.AppWindow.Visible = True
Set pres = ppt.presentations.open("c:\windows\desktop\test.ppt")
End Sub
If you want PowerPoint to be essentially invisible, you can use the
following command to minimizePowerPoint's application window before opening
the presentation file:
ppt.AppWindow.Windowstate = ppWindowMinimized
This line must come after the "ppt.AppWindow.Visible" command, otherwise
the window will not be minimized. The code might look something like the
following:
Private Sub Form_Load()
Dim ppt As Object
Dim pres As Object
Set ppt = CreateObject("PowerPoint.application.7")
ppt.AppWindow.Visible = True
ppt.AppWindow.Windowstate = ppWindowMinimized
Set pres = ppt.presentations.open("c:\windows\desktop\test.ppt")
End Sub
STATUS
Microsoft has confirmed this to be a problem in the Microsoft products listed
at the beginning of this article.
Modification Type: | Minor | Last Reviewed: | 10/11/2006 |
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Keywords: | kbcode kbdtacode kberrmsg kbhowto kbmacro kbprogramming KB155073 |
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