I am trying to make my top_panel of my program go into fullscreen only, i hope to have a button which will do this, the issue i am faced with is i dont know how to make the pane
You can't show a child window, such as a panel, full screen. Only top level frames can be shown full screen but, of course, this shouldn't be a problem at all because absolutely nothing prevents you from creating a frame containing just the panel and then showing this frame full screen is completely equivalent to showing the panel full screen.