Didn't the Win7 mouse move to the "show desktop"?

Why does the mouse move to “display the desktop Nothing happens?
Win7“Show desktop" Description: The rightmost part of the Win7 taskbar has a small rectangle. By default, just move the mouse to Win7 desktop at the bottom right of the "display desktop" where there is no movement, waiting for about 0.5 seconds, you can temporarily display the desktop (Figure 1), move the mouse to restore the original look.

Figure 1 “Show the effect of the desktop



































There is no reflection for 1 minute, I hope to find out.
Disambiguation: The reason why the "Show Desktop" preview function is disabled is because the "Use the Aero Peek Preview Desktop" function in the taskbar and start menu properties “Settings window (Figure 2) .

Figure 2 Using Aero Peek to preview the desktop
Workaround: Open the Win7 Control Panel, then find the “Taskbar and Start Menu” (Figure 3), and finally in the pop-up menu ““ Use the Aero Peek Preview Desktop & rdquo; in front of the optional box with “hook”.

Figure 3 Win7 Control Panel
As long as you take the time to toss, the use of Win7 can be solved. I hope to help you better use the most user-friendly Windows7 system.