public static extern void ulOverlayUnfocus(ULOverlay overlay);
public static extern void ulOverlayShow(ULOverlay overlay);
public static extern bool ulOverlayHasFocus(ULOverlay overlay);
public static extern bool ulOverlayIsHidden(ULOverlay overlay);
public static extern void ulOverlayHide(ULOverlay overlay);
public static extern void ulOverlayMoveTo(ULOverlay overlay, int x, int y);
public static extern void ulOverlayResize(ULOverlay overlay, uint width, uint height);
public static extern int ulOverlayGetY(ULOverlay overlay);
public static extern uint ulOverlayGetHeight(ULOverlay overlay);
public static extern uint ulOverlayGetWidth(ULOverlay overlay);
public static extern ULView ulOverlayGetView(ULOverlay overlay);
public static extern void ulDestroyOverlay(ULOverlay overlay);