How to make your computer automatically replace desktop background

　　Windows 7 supports multiple desktop background switches to make our desktop more gorgeous, but for users who like to store pictures in folders, when you set up a desktop background, if you specify a folder that contains subdirectories , such as "wallpaper", but it also has "landscape , "Animal" and so on several subdirectories, when displays the desktop background only then can display the picture under the wallpaper folder, "The scenery" and so on subdirectory's picture is unable to show, really is some fools ...

　　Limitations of the System solution

For a different desktop background issue, Windows 7 offers two distinct solutions that open the Select Desktop Background window, which you can choose from the picture position Drop-down list:

One is to choose "Windows desktop Background", its actual storage path is "C:windowswebwallpaper", where all the subfolders of the picture, can be displayed in the desktop background;

The second is to select "Picture Library", where you can display all the Pictures folder added to the library, but you need to manually add the relevant picture folder to the "Picture library."

Obviously, regardless of what kind of ready-made solution to choose, you need to add the picture folder to the appropriate location, especially the "Picture library" operation, relatively cumbersome.

　　Perfect solution

In fact, we can expand more content for "Windows desktop Background", do not need to copy the relevant folders past, through the registry can solve this problem. Open Registry Editor with Administrator privileges, and then navigate to

"Hkey_local_machinesoftwaremicrosoftwindowscurrentversionexplorerwallpapersknownfolderswindows Wallpapersmergefolders ",

This is the folder information for Windows 7 wallpapers, right click to add an expandable string value (Figure 1), the string name is the name of the picture folder, such as "E: Wallpaper", and then close the Registry Editor after refreshing.

Now, close the personalization window that you have open. Right-click the desktop, select personalized → desktop background, open the Select Desktop Background window, set the picture position to "Windows desktop Background" (Figure 3 below), where you can find that the picture folder you just added has entered the and contains all levels of subfolders, although the classification is not together, but has been able to choose, is not very convenient?

These actions do not have any effect on your Windows7 system and are applicable to all users who log on to this computer.