Turn off screenupdating for Powerpoint
Assuming you put your code in a class module called Class1, you create an instance in your main code like this...
Dim myClass1 as Class1
Set myClass1 = New Class1
Class1.ScreenUpdating = False
EDIT: Just use the code as it was originally written: no need to add anything. The bad news is that it doesn't make any difference to speed in my testing in PPT 2013. You can verify that its working though by leaving it set to False.
Class module cScreenUpdating...
Option Explicit
' UserDefined Error codes
Const ERR_NO_WINDOW_HANDLE As Long = 1000
Const ERR_WINDOW_LOCK_FAIL As Long = 1001
Const ERR_VERSION_NOT_SUPPORTED As Long = 1002
' API declarations for FindWindow() & LockWindowUpdate()
' Use FindWindow API to locate the PowerPoint handle.
Private Declare Function FindWindow Lib "user32" Alias "FindWindowA" _
(ByVal lpClassName As String, _
ByVal lpWindowName As Long) As Long
' Use LockWindowUpdate to prevent/enable window refresh
Private Declare Function LockWindowUpdate Lib "user32" _
(ByVal hwndLock As Long) As Long
' Use UpdateWindow to force a refresh of the PowerPoint window
Private Declare Function UpdateWindow Lib "user32" (ByVal hWnd As Long) As Long
Property Let ScreenUpdating(State As Boolean)
Static hWnd As Long
Dim VersionNo As String
' Get Version Number
If State = False Then
VersionNo = Left(Application.Version, _
InStr(1, Application.Version, ".") - 1)
'Get handle to the main application window using ClassName
Select Case VersionNo
Case "8"
' For PPT97:
hWnd = FindWindow("PP97FrameClass", 0&)
Case "9"
' For PPT2K:
hWnd = FindWindow("PP9FrameClass", 0&)
Case "10"
' For XP:
hWnd = FindWindow("PP10FrameClass", 0&)
Case "11"
' For 2003:
hWnd = FindWindow("PP11FrameClass", 0&)
Case "12"
' For 2007:
hWnd = FindWindow("PP12FrameClass", 0&)
Case "14", "15"
' For 2010:
hWnd = FindWindow("PPTFrameClass", 0&)
Case Else
Err.Raise Number:=vbObjectError + ERR_VERSION_NOT_SUPPORTED, _
Description:="Newer version."
Exit Property
End Select
If hWnd = 0 Then
' window was not found...
Err.Raise Number:=vbObjectError + ERR_NO_WINDOW_HANDLE, _
Description:="Unable to get the PowerPoint Window handle"
Exit Property
End If
'Attempt to lock the window
If LockWindowUpdate(hWnd) = 0 Then
' attempt failed...
Err.Raise Number:=vbObjectError + ERR_WINDOW_LOCK_FAIL, _
Description:="Unable to set a PowerPoint window lock"
Exit Property
End If
Else 'State = True
'Unlock the Window to refresh
LockWindowUpdate (0&)
UpdateWindow (hWnd)
hWnd = 0
End If
End Property
Example usage...
Set appObject = New cScreenUpdating
appObject.ScreenUpdating = False
' code here
appObject.ScreenUpdating = True