Its not that Jaeger.
Its just that 3DGS (like any DirectX app) create the full-screen in a different
"video-space"(called a D3Ddevice) to windows itself, and the API's ONLY create
themselves on the windows D3Ddevice.

Ive played with your idea in the past, and all I could get was the API box coming
up in front OK, but the 3DGS display freezes, even though the game is still running,
or the game would get kicked back to windowed mode with the API box in front.

Neither of which was acceptable.