I may be easily amused, but I continue to find new uses for Workers and Call 
Form that make me say wow; and C_OBJECTs make it all so very clean and 
efficient…

This weekend I had a situation where I had a main process with dialog that 
needed to spawn another process with dialog. Then that second process needed to 
spawn a third process with dialog. All three dialogs while working 
independently of each other, needed to be able to tell the other processes to 
do various admin functions or refreshes. Some while actively being used by the 
user and all when closed.

Ok, in the past this would have required each process to know the process 
numbers of each of the other processes via passed parameters or global 
variables and each process had to have an On Outside Call event enabled to 
handle the calls. Not a big deal but things could get pretty convoluted in a 
hurry.

Now CALL WORKER and CALL FORM make this scenario a whole lot easier and 
compact. I created a worker process and have it spawning all the processes. A 
process needing to spawn another process tells the worker to do it. The worker 
easily keeps track of all the process numbers and window references of the 
processes it spawns. 

Then when a process needs to tell one or more of the other processes to do 
something, it simply calls the worker process with a C_OBJECT containing the 
instructions of what it wants done and by which process. The worker process in 
turn communicates those instructions (C_OBJECT) to the desired process with 
CALL FORM.

Anyway, like I said, I am easily amused.

John



John Baughman
Kailua, Hawaii
(808) 262-0328
[email protected]





**********************************************************************
4D Internet Users Group (4D iNUG)
FAQ:  http://lists.4d.com/faqnug.html
Archive:  http://lists.4d.com/archives.html
Options: http://lists.4d.com/mailman/options/4d_tech
Unsub:  mailto:[email protected]
**********************************************************************

Reply via email to