I used to use DDE as the interface to my stock-quote server. It caused no end of headaches.
It took lots of CPU. So I got a bigger machine. Then Windows XP came along. DDE started giving weird errors that smelled strongly of 'FIFO overrun'. With the kind help of Eric Iverson, who built a couple of special builds with debug code inserted into the J DDE driver (try getting THAT kind of support from other languages!), I verified that it was, in fact, a FIFO overrun, and not on the J end. I came up with a kludge: I set the process priority of the receiving process very high, to eliminate the overrun. That worked. Then Vista came along. DDE FIFO overruns again. I suspect that this was because I needed some Administrator amulet to get the process-priority change to work... ...but I'll never know, because I found a quote server with a socket interface. I was able to scrap DDE. I haven't felt so good since I upgraded from dialup Internet to broadband. No more DDE for me. Henry Rich > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Raul Miller > Sent: Sunday, October 05, 2008 8:06 PM > To: Programming forum > Subject: [Jprogramming] j and dde > > http://www.jsoftware.com/jwiki/Scripts/DDEClientClass seems > to be neglected. > > I performed the obvious conversions, and then tried its > documented 'test' verb > which did not seem to do anything. > > I then found > http://www.jsoftware.com/jwiki/System/Beta/DUGrid?action=Attac > hFile&do=get&target=dmdde.ijs > which seems has had the obvious conversion performed, but and > http://www.jsoftware.com/jwiki/System/Beta/DUGrid has what looks like > a decent example, but dugrid.ijs which requires a "browser.ijs" and > in any event the examples do not really delve into any of the areas > where person might want to use dde (for example, where you might be > editing different parts of the same document in different > programs, with > all programs updating their view of that document when a > change is made > in any one of them). > > So... I was wondering if anyone had any good example of dde > and its event > handlers being used in J? > > Thanks, > > -- > Raul > ---------------------------------------------------------------------- > For information about J forums see > http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
