TrackMouseEvent

C# Definition:

[StructLayout(LayoutKind.Sequential)]
public struct TRACKMOUSEEVENT {
   public int cbSize;
   public uint dwFlags;
   public IntPtr  hwndTrack;
   public int dwHoverTime;
}

VB Definition:

Public cbSize As Integer
   Public dwFlags As Integer
   Public dwHoverTime As Integer
   Public hwndTrack As IntPtr