What This VBA Code Does
Basically, anything you can select on your PowerPoint slide is considered an object. What this macro will do is center a selected object in the middle of the slide. You can break this VBA code up and just center horizontally or vertically. It's up to you!
'PURPOSE: Center an Object Horizontally and Vertically
Dim Obj As Object
Dim Obj_Left As Long
Dim Obj_Top As Long
'Set Sld variable equal to Current Slide Being Viewed
Set Sld = Application.ActiveWindow.View.Slide
'Set Obj Variable equal to Current Selected Object
On Error GoTo Select_Object
Set Obj = ActiveWindow.Selection.ShapeRange
On Error GoTo 0
'Center the Object Horizontally and Vertically
Obj_Left = Obj.Left
Obj_Top = Obj.Top
Obj.Left = (.SlideWidth \ 2) - (Obj.Width \ 2)
Obj.Top = (.SlideHeight \ 2) - (Obj.Height \ 2)
'Error Handler In Case No Object is Currently Selected
MsgBox "No object selected to center."
How Do I Modify This To Fit My Specific Needs?
Chances are this post did not give you the exact answer you were looking for. We all have different situations and it's impossible to account for every particular need one might have. That's why I want to share with you: My Guide to Getting the Solution to your Problems FAST! In this article, I explain the best strategies I have come up with over the years to getting quick answers to complex problems in Excel, PowerPoint, VBA, you name it!
I highly recommend that you check this guide out before asking me or anyone else in the comments section to solve your specific problem. I can guarantee 9 times out of 10, one of my strategies will get you the answer(s) you are needing faster than it will take me to get back to you with a possible solution. I try my best to help everyone out, but sometimes I don't have time to fit everyone's questions in (there never seem to be quite enough hours in the day!).
I wish you the best of luck and I hope this tutorial gets you heading in the right direction!
Chris "Macro" Newman :)