I would like to use the KDE file chooser dialog, but obviously, that is only available if I run KDE. Is there a way to force libreoffice to use it anyway – load the required libraries at startup if necessary – through some kind of environment variable, if I use some non-DE window manager solution?
Yes, see http://wiki.services.openoffice.org/wiki/Environment_Variables, OOO_FORCE_DESKTOP.
Thanks. The page mentions “kde” and “gnome” as alternatives. I had to set it to “kde4” in order for it to work. (which involved other problems, but I think those are related to the installation of KDE, and not to the libreoffice integration)