On Fri, Nov 30, 2018 at 11:51 AM <caoke...@gmail.com> wrote: > Dear all, > > I have set the sumatra as my defalt PDF viewer of LyX. > > But there will a new PDF each time if I compile it using CTRL+R. > > I want the output to overwrite the old PDF. > > Is there anything I can do? > As per the Sumatra PDF documentation ;-) — in "Settings" select "Advanced settings" to bring up the advanced settings file in your default text editor. Find the line for "ReloadModifiedDocuments" and edit it to read:
ReloadModifiedDocuments = true Note that I believe there is a size limit (10MB?) after which Sumatra will not do auto-reloads even if you set this parameter to "true". -cm