extend

I'm developing a software that allows you to import presentation files such as .ppt, video files, and .swf files. My problem is that how am I going to get the slides of a .ppt file and list them? What objects am I suppose to use?

Rory

Well you said OLE, so it's fairly simple to store an OLE state object as binary data in a file, even if it's a bit outdated. I'd recommend switching to .NET though, and just using Serialization, making a nice XML file. This would require the user to have the application providing the COM(+) server installed though, if you want to actually parse these files independently without using a library are you're saying you'll have to write the code to manipulate the file format yourself, which sounds like you're reinventing the figurative wheel (DaWei 30 000 BC, patent pending).