When Jenner was dithering about vaccination, he was told “Don’t think; try the experiment”.
I may yet run foul of some hidden gremlin which bares its fangs when 4D19 appears, but I tried the experiment and thus far it works like a dream. Step 1: at startup, call the worker to get things set up (mostly just opening a window, miles offscreen, containing a VP area and use DIALOG (…;*) to show it and let it initialise itself). Step 2: when required, call the worker to load data into the pre-initialised VP area, work on it, open a window and display it in a form which allows for user interaction. When the form is closed, the worker hangs around waiting for the next usage and the window containing the VP area is still open. Thanks for all the input. Jeremy ********************************************************************** 4D Internet Users Group (4D iNUG) Archive: http://lists.4d.com/archives.html Options: https://lists.4d.com/mailman/options/4d_tech Unsub: mailto:[email protected] **********************************************************************

