Hi, I have just installed LyX (1.4.4) through Cygwin on my Windows XP system. When in math mode, I can type \frac and then press SPACE I will get the fraction symbol. Also it works for the \sqrt symbol. However, all the Greek letters are not displayed. For example, when I type in \alpha, it just returns "alpha" in the box, not the symbol. I can only see the symbol after I export my document to the pdf format.
On the other hand, for the LyX (1.3.6) under the SUSE 10.2 system on my work computer, all Greek letters appear immediately after I type in the corresponding latex code. I went to the LyX wiki pages and found an article talking about using instant Preview. However, it seems not to be the case here. I checked the Preferences->Graphics->Instant-Preview of the LyX on my SUSE system, the instant preview is Not on; but there I still got the instant Greek letters as I type in its latex code. I then came back to my LyX on my Windows system. when I enabled the "instant-preview", it DOES give me greek letters AFTER I finished the Latex command typing and jumping out of the math mode box. It obviously took a while for the Preview to process the command and insert in the Greek letters produced. This behavior of showing the Greek letters after I enabled the "instant preview", seems works in the same way as I use auc-tex inside emacs when I use emacs to edit a latex file: it took a while to generate the required images. So I am wondering what could be done to enable this immediate display of mathematical symbol inside math mode box as I type in the latex commands, just like how it works on my SUSE system. The problem seems to be not related with preview-latex. Is this just a problem for the Windows version of lyx (ported through cygwin) ? Thanks a lot for your help, Zhi
