How to simulate ThisPresentation in PowerPoint VBA

问题

I would like to be able to access the document properties of a PowerPoint add-in file (a presentation saved as "PowerPoint Add-in (*.ppa)", from some VBA code in the add-in itself.

If it helps to understand the problem, what I'm actually trying to do is read a custom document property that stores the version number of the add-in, so that I can display that in a dialog box.

With Word & Excel I can do this using ThisDocument & ThisWorkbook, both of which return a reference to the document containing the running code. However, there is no ThisPresentation equivalent in PowerPoint.

For a standard PowerPoint presentation or template, I could use ActivePresentation. However, this method won't work for an add-in.

Any ideas? Please, no suggestions about where else I should stick the version number :-)

回答1:

REVISED FEB 2, 2010: Cleaned up answer to only show the final solution

Here's the way to do what was asked, no DLLs. Really simple:

Sub ReturnPPAasPresentation()
    Dim p As Presentation
    Set p = Presentations("presentation1.ppa")
    Dim title As String, version As String
    version = p.CustomDocumentProperties("Version").Value
    title = p.BuiltInDocumentProperties("Title").Value
    MsgBox "Version: " & version & " of " & title, vbOKOnly, title
End Sub

回答2:

Like everyone else I expected a ThisPresentation object in PowerPoint. I thought of another way to accomplish it, without a hardcoded filename. Obviously any piece of code would need to know how to distinguish between the projects. I chose to use the projectname for this (default name "VBAProject" in the Project Explorer): it is not used for anything else, no user will change it and if it is protected they can't.

Here is my code (change MyProject into your own projectname):

Function ThisPresentation() As Presentation
Dim p As Presentation

For Each p In Presentations
    If p.VBProject.Name = "MyProject" Then
        Set ThisPresentation = p
        Exit Function
    End If
Next
End Function

回答3:

Credit goes to macnerd nerd for the general idea, but added AddIn functionality. Unfortunately, AddIns don't have VBProject names, so not quite as robust:

Function ThisPresentation(project_name As String) As Object
Dim p As Object

all_presentations = Array(Application.AddIns, Application.Presentations)
For Each pArray In all_presentations
    For Each p In pArray
        Debug.Print p.FullName
        If InStr(p.FullName, project_name) > 0 Then
            Set ThisPresentation = p
            Exit Function
        End If
    Next
Next
End Function

来源：https://stackoverflow.com/questions/1472418/how-to-simulate-thispresentation-in-powerpoint-vba

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vba

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