Rotate an image on every other slide
A visitor to the PowerPoint Newsgroup asked if it was possible to rotate every other page in a PowerPoint presentation 180 degrees so that when printed in book form, all of the images would be facing the same way.
One approach to solving this is to export each slide in the presentation as an image, re-import each image onto a new slide in a new blank presentation, then run this macro on it to "flip" all of the images on even numbered slides.
If you want to save some time, the PPTools Protect add-in
automatically exports and imports the images for you. All you'd need to do is run it on your presentation then run the macro on the result.
Sub SpinEm() Dim oSl As Slide Dim oSh As Shape For Each oSl In ActivePresentation.Slides If IsEven(oSl.SlideIndex) Then Set oSh = FirstImage(oSl) If Not oSh Is Nothing Then oSh.IncrementRotation 180 End If End If Next End Sub Function IsEven(lInput As Long) As Boolean If lInput / 2 = lInput \ 2 Then IsEven = True Else IsEven = False End If End Function Function FirstImage(oSl As Slide) As Shape Dim oSh As Shape For Each oSh In oSl.Shapes If oSh.Type = msoPicture Then Set FirstImage = oSh Exit Function End If Next End Function