public ref class MouseTrack
  unsigned Flags;
  Handle Window;
  unsigned Hover;

Flags A selection of flags from the enumeration MouseEventFlag.
Window The handle of the window to receive notifications of tracking events.
Hover The time (in milliseconds) which the mouse is to remain within a hover rectangle prior to a hover message being sent. The value HoverFlag::Default may be specified, in which case, the system default hover time is used.