title: Auto Update every picture in a PowerPoint Slideshow
body: <p>I have a very large and complex PowerPoint with a full size image as the background for every individual slide.  I have a directory full of these background pictures, which are all JPEG's.  Sometimes I change these photographs, which are made with Photoshop, and when I change them, I save them over the original JPEG in the same directory. </p>
  
  <p>I then have to update them in the PowerPoint.  The manual functios to do this is to right-click the photograph, and click replace photo, then pick the new JPEG from the file menu.  I want to write a macro in Visual Basic that will go through the entire slideshow, and reload the graphic from the updated JPEGs, without me having to do it manually.  I don't know if it is possible, because I don't know if PowerPoint actually remembers the path and filename of each picture that it places.</p>
  
  <p>Is there a picture property which contains the path and filename that was used to paste the picture in the first place?  If there is, I could find that property, query it, and use that as the path to reload and thereby update the picture recursively all the way through slide by slide.</p>
  
  <p>Would this be possible?</p>