Hi Bruce, You can take a look here [0] with the help of Google translate.
Regards Gianluigi [0] http://www.gambas-it.org/wiki/index.php?title=Inviare_dati_da_un_programma_Gambas_ad_un_altro_mediante_le_risorse_del_Componente_DBus 2017-08-11 13:58 GMT+02:00 Benoît Minisini via Gambas-user < gambas-user@lists.sourceforge.net>: > Le 11/08/2017 à 13:47, adamn...@gmail.com a écrit : > >> >> Since it's soon to be the busiest time of our year (the spring >> thoroughbred auctions) I thought I'd just redesign our entire auction >> management system (haha). >> >> On any day we may have up to 10 or so auctions in progress at the same >> time. Some online (conducted by us or others) and some live (using our sale >> manager, which talks back to us) (and some we have no idea about). Last >> year, a change in the industry permitted a particular horse to be entered >> in more than one auction, to be withdrawn from subsequent lots if sold in a >> previous lot. You can imagine the mess this caused, both in setting >> schedules and in communicating between the auction houses. Luckily, last >> year the idea didn't really catch on in a big way, but over the year >> interest has been growing. Suffice to say we have a system that allows us >> to watch for sales of this type and manage them (at least in the auctions >> we "control"). The current way we do it is to have multiple "auction" >> monitors running as separate invocations of the monitor project. The only >> communication between them is via the human operators who have to watch >> each lot ... etc etc. >> Basically what I'm trying to do is have a single monitor that shows the >> progress of sales across a number of active auctions, sending messages >> between arbitrary pairs (or multiples) when a "marked" lot is either sold >> or passed in by an auction where it is the "early" one. So we have a main >> "controller" that launches a number of auction monitors and a particular >> monitor knows when a "marked" lot is offered and then sold or passed in. I >> can raise an event in the monitor, caught by the controller when another >> monitor object needs to be told to allow the sale of a "marked" lot to >> proceed or to withdraw it. The main controller then has to work out which >> of the other monitor instances is interested in this particular horse and >> then pass it a message via a public routine call. This is to put it >> mildly, bloody difficult and damned messy. >> >> What I'd like to do is have each monitor catch events from some other >> monitor both of whom are handling a "marked" lot. The controller when it >> invokes each monitor is able to indicate such marked pairs to each auction >> monitor (I have that bit worked out). The "conversation" I envisage would >> go along these lines: >> >> AuctionA >> AuctionB >> 1. When a marked lot is coming up for sale, i.e. in the next 5 lots >> offered | -------------------------->| "Lock lot X" >> 2. When the horse is offered and sold in the first auction >> | -------------------------->| "Withdraw lot >> X" >> 3. When the horse is passed in at the first auction >> | -------------------------->| "Unlock >> lot X" >> 4. Exception: when a certain time period has passed since message 1 >> | <------------------------- | "Query lot X" >> >> | >> --------------------------->| "Response (lock or unlock) lot X" >> 5. Exception: no response to query >> >> | --------------------------------------------> Alert controller >> >> (It's a bit more complex, but that is the general sense of it.) >> >> So, is there a way that I can tell the "AuctionB" monitor to listen for >> events raised by the "AuctionA" monitor? I thought I might be able to use >> the gb.qt4 "Watcher" for this but I can't seem to get it to happen. Is >> that the way to go? Any other ways or ideas. >> >> tia >> (and thanks for reading this very long post.) >> >> bruce >> >> >> > > If you have multiple processes that want to communicate, why not using > D-Bus ? > > -- > Benoît Minisini > > ------------------------------------------------------------ > ------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > Gambas-user mailing list > Gambas-user@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/gambas-user > ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Gambas-user mailing list Gambas-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/gambas-user