Re: Multiple Monitors

[Oscar Lazzarino <oscar lazzarino i-m3d com>]

On 06/11/2010 06:12 PM, Talguy wrote:

> Sorry for this question still new at this windowing stuff.  When you say
> you can have multiple screens for one display that translates to that
> your single monitor will be partitioned into multiple sections.  Am I
> getting the right idea about that?

No.

A Gdk::Monitor is what represents a physical display.

A Gdk::Screen represents a virtual surface and that surface can span 
many monitors or one single monitor.

A Gdk::Display represents an instance of the X server, and that Display 
can manage more than one Screen.

Xinerama is a kind of setup where you have:

* one display (i.e one instance of X11 running)
* which manages one big "virtual" screen
* which overlaps the surface of your two (or more than two) monitors.

So if you have two 1920x1200 monitors, you will have a Screen with 
resolution 3840x1200.

In this setup, for example, you can drag a window across your monitors, 
because it will always be on the same Screen.

A "multi screen" setup, consists of

* one display (i.e one instance of X11 running)
* wich manages two distinct screens
* and each screen covers exactly one monitor

In this setup you will have two totally independent logical Screens, 
each with resolution 1920x1200 (and you cannot drag a window across 
monitors).

Hope that clarifies a bit.

O.