A multi-monitor setup brings the major benefit of more real estate, but it also lacks the Fitts' Law benefits
of hard edges and corners across displays. While itís extremely easy to trigger corner UI such as Start
, or recently used apps
on a single monitor, it isnít uncommon to overshoot the mouse pointer when the corner appears on a shared edge on a multi-monitor configuration.
With multiple monitors in fact, targeting the shared edge can be downright difficult. Move a few pixels too far and your pointer is suddenly on the wrong monitor. This has been a common challenge in previous versions of Windows as well, like when youíre trying to hit the close button or scroll bars on a maximized window on a shared edge. Many work around this by remembering to move the mouse slowly as it approaches a shared edge or by avoiding window layouts that bump up against those edges.
Windows 8 introduces an improved model for shared edges that makes it easier to target UI along a shared edge.
Since corners are even more important for Windows 8, real corners were created along the shared edges to mimic the Fittsí Law advantages of a single monitor. The red corners in the diagram below demonstrate how these corners can help guide your mouse.
The corners were designed to provide help when you need it and to get out of the way when you donít. The protruding corner target is 6 pixels in height, which means that it is only noticeable when youíre trying to target the corner of the screen. Also, weíve designed the corner to only work for the monitor your cursor is on. For example, leaving monitor 2 for monitor 1 in the diagram below, the bottom corner in monitor 1 will not interfere as you move your mouse across the shared edge.
Shared corner does not block cross monitor navigation
The shared corner isnít just an improvement for the new Windows 8 UI, but it also makes it easier to target controls on the desktop like Close
and Show desktop
. As a result, targeting shared corners is fast and fluid. First-hand experience is a must with this design, as you will notice this improvement right away when using Windows 8.
Source: Enhancing Windows 8 for multiple monitors - Building Windows 8 - Site Home - MSDN Blogs
While the sticky corners feature can be helpful to prevent overshooting into the next monitor when trying to use a corner UI, some people may find that the pointer gets stuck in the corners to easily while trying to move across monitors.
This tutorial will show you how to either disable or adjust sticky corners
in a multi-monitor
setup for only your user account in Windows 8