title: Accessing Slide object in PowerPoint add-in
body: <p>I'm building a add-in for PowerPoint and need to access the Slides or Slide objects, or even the whole presentation; alas, the only method I can see of doing this is to open a <em>new</em> ppt file. Right now I'm having to resort to the hacky method of saving the current presentation and reopening it with Packaging to manipulate anything (more specifically I'm having to SHA the Slide objects from the pptx file to see if they've changed -- not ideal)</p>
  
  <p>Is there any way to open the file that is currently open in PowerPoint w/o having to IO a file?</p>
  
  <p>Thanks for your help,
  P</p>