static extern IntPtr RealChildWindowFromPoint(IntPtr hwndParent, POINT ptParentClientCoords);

Private Shared Function RealChildWindowFromPoint(hwndParent As IntPtr, ptParentClientCoords As POINT) As IntPtr

<DllImport("user32", CharSet:=CharSet.Ansi, SetLastError:=True, ExactSpelling:=True)> Public Function RealChildWindowFromPoint(ByVal hwndParent As IntPtr, ByVal ptParentClientCoords As POINTAPI) As IntPtr