Split Screen left-right

[wxl]

You mean so you can have two apps side by side? If so, the best solution is replacing OpenBox with a tiling window manager like i3. Otherwise, OpenBox has the option for something like this, but we don’t have it configured. More here:

How to snap windows?

It’s not necessarily the lack of Compiz (a window manager), but the fact that the window manager (Openbox) is somewhat limited in its abilities, primarily because the author long ago considered it a finished product. It hasn’t seen changes in a long time. Though I’ve seen few bugs in it, it certainly hasn’t kept up with the times. Snapping is a relatively new thing. That said, there is sort of a way to get at it. Change ~./config/openbox/lxqt-rc.xml so that something like the following is inclu…