static extern bool EnumThreadWindows(uint dwThreadId, EnumThreadDelegate lpfn, IntPtr lParam);

Friend Shared Function EnumThreadWindows(dwThreadId as Int32, lpfn as EnumThreadDelegate, lParam as IntPtr) as Boolean

            static extern bool EnumThreadWindows(uint dwThreadId, EnumThreadDelegate lpfn, IntPtr lParam);

                                EnumThreadWindows((uint) pt.Id, new EnumThreadDelegate(ExitApp.EnumThreadCallback), IntPtr.Zero);

       Shared Function EnumThreadWindows(dwThreadId As UInteger, lpfn As EnumThreadDelegate, lParam As IntPtr) As Boolean

             EnumThreadWindows(CUInt(pt.Id), New EnumThreadDelegate(ExitApp.EnumThreadCallback), IntPtr.Zero)