A stupid way to hide Tablet PC Input Panel

I found a way to hide the Tablet PC Input Panel on Vista when playing Windows Media Player 11 in full screen mode. Before finding this trick, the hanlde of Input Panel always exist on the screen even when I play video using Windows Media Player in full screen. (Media Player Classic) does not thave that problem.

The track is to activate the panel as a floating window. Then the handle will no longer be displayed when I display the video in full screen mode.