After a number of years of using POI to manage custom properties in PPT files, I am now looking into handling ooxml .pptx files.
I've installed the 3.8 release and also looked at the 3.9 beta. A lot of the functionality is already in place and works quite well ... thanks to the team for their work on this! I can open the PPTX, retrieve both core and custom properties, set title in the core properties, and read all the custom properties. Commit of the properties also works great. There are already methods for checking for the existence of a custom property and for adding new custom properties. At the moment, there is not a custom property method for modifying the value of an existing property or to delete an existing property (where delete + add would be another way to modify a property). I'd appreciate suggestions for an approach I could use to modify an existing custom property. Thanks very much. - Bruce Rosen
