I don't know about instant preview here. I tend not to use it, as it can cause problems on Fedora. My message concerned, I think, the "preview" you get just within LyX itself, so that "\mymac" would appear as a Sigma.
Nils Becker wrote: > Hi list, > > This message relates my previous message > http://www.mail-archive.com/lyx-users@lists.lyx.org/msg53761.html > > and Richard Heck's reply > > >> I think the following message answers this question, more or less: >> http://www.mail-archive.com/lyx-users@lists.lyx.org/msg51387.html. >> >> Richard >> >> > thanks for your reply. > I looked up your solution and it does not seem to work. > I still haven't got a way to make instant preview work in child documents. In > fact, > even a more basic task fails: > Here is what I did: > > 1.Create > macrofile.lyx > containing only a macro corresponding to \newcommand{\mymac}{\sum} > and another math mode line in which the macro is tested > > 2.Create > mainfile.lyx > containing an "input" file inclusion of macrofile.lyx and another line in > which the > \mymac macro is used. > > 3.Quit LyX & Restart LyX. > > 4.open macrofile.lyx. In fact, here, instant preview works! > > 5.open mainfile.lyx. Here, instant preview fails. > > Nonetheless, the document does compile correctly to DVI. > (both files are "article" document class, and are attached to this mail) > > I am using LyX 1.4.3 on SuSE Linux 10.1 > > Did I do something wrong? > > Thanks for any help, Nils > >