I am trying to embed a PDF file or powerpoint presentation inside a GUI window.

I am trying to embed a PDF file or powerpoint presentation inside a GUI window. To make clear, I am successful in calling PDF file using push button. What exactly I am looking is, similar to windows media player embedded inside the GUI window. If I double click it then it becomes full screen, else it stays inside in small default screen size on GUI itself. I want to make similar thing for PDF file or powerpoint presentation.

I hope the problem is clear and it didn't confuse a lot.