How to automatically change the desktop background by automatically changing the desktop of the computer

Windows 7 supports multiple desktop background switching functions to make our desktop more beautiful, but for users who like to save images according to folders, if you specify a folder containing subdirectories when setting the desktop background, such as "wallpaper", but there are several sub-directories such as "landscape" and "animal". When displaying the desktop background, only the pictures under the wallpaper folder can be displayed, and the pictures in sub-directories such as "landscape" cannot be displayed. It’s really a stupid hat...

◎ Limitations of the system solution

With regard to the alternative desktop background, Windows 7 offers two different solutions, open "Select desktop background" "Window, you can choose from the "Image Location" drop-down list:

First, select "Windows Desktop Background", its actual storage path is "C:\\windows\\web\\wallpaper", all subfiles here The pictures in the folder can be displayed in the background of the desktop;

The second is to select "picture library", here you can display all the pictures folder added to the library, but need To manually add related image folders to the "picture gallery".

Obviously, no matter which off-the-shelf solution you choose, you need to add the image folder to the corresponding location, especially the operation of the "picture library", which is relatively cumbersome.

◎ Perfect Solution

In fact, we can expand more content for the "Windows Desktop Background", without having to copy the relevant folder, you can solve this through the registry. problem. Open the Registry Editor with administrator privileges and navigate to

"HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Explorer\\Wallpapers\\knownfolders\\0\\Windows Wallpapers\\MergeFolders",

The content here is the folder information of Windows 7 comes with wallpaper, right click to add an expandable string value (as shown in Figure 1), the string name is the name of the image folder, such as "e:\\wallpaper", close after refreshing Registry Editor.
Now, please close the opened "Personalization" window, right click on the desktop and select "Personalization → Desktop Background", open the "Select Desktop Background" window, and set the picture position to "Windows Desktop Background" (see below) Figure 3), here you can find that the picture folder you just added has entered it, and it contains sub-folders of various levels. Although the classification is not together, it is already selectable. Is it convenient? The above operation will not work for your Windows7. The system has any impact and is suitable for all users who log in to the machine.