You were not obscure at all, actually, well presented. It is I, that is in a hurry, and "looking for a rounder circle" without much experience in drawing a line. @Michel Claveau posted a dll to do the _WinAPI_CreateFileMapping() and @trancexx pointed him to the DLL calls she used in her code. You yourself use those calls in your code, so what I'll do is to use a mix of what I have in hand, and that is the example from the help file, mainly due to that in the help files example, looks to me ala