I will teach you how to use the registry subkey

After learning about the root key, let's take a look at the main child keys under the Windows XP Root Key. Here, we mainly introduce the impact on the system appearance, interface, user functions, and application software, that is, the main modification items that users want to customize, clean up, and set the registry.

Located under the root key HKEY_CURRENT_USER:

(Note: The following subkeys are in HKEY_USERS /. the two functions are the same Under default, but the settings under HKEY_CURRENT_USER are used for the current login user, that is, the user is mostly the Computer Administrator on the personal computer, while the user is HKEY_USERS /. the settings under default are used by other users .)

Appevent subkey:

Saves time tags, descriptions, and sounds of different system functions. The following two subkeys are eventlabels and schemes. The eventlabels subkey lists various application events alphabetically. Schemes subkeys classify events by apps and names. Now open hkey_local_user \ appevents \ schemes \ apps \. default: open [start] | [Control Panel] | [sound and audio devices], compare the content of the sound tab and registry subkey in the pop-up "audio and audio device properties" dialog box. Do you find"ProgramWhat exactly does the content in the event list correspond to the Registry content next to it? :)

Yes, they are exactly the same thing. All Program Event sound schemes are stored here. You can modify them through the control panel or in the registry. The effects are consistent.

Console subkey:

This mainly involves some DOS window settings. You can change the key value on the right of the registry editor window to modify parameters such as the DOS window size, foreground color, background color, and cursor size.

Control Panel subkey:

The content is related to settings such as desktop, cursor, keyboard, and mouse. Similarly, many of the subkeys correspond to the content in the control panel. The following primary subkeys are:

Accessibility subkeys: these subkeys correspond to "Auxiliary Function options" in "Control Panel. Some subkeys have an "on" in their key names. If their key value is 0, this setting is disabled. If its value is 1, this setting is enabled. For example, for the showsounds sub-key under it, the "on" Key value on the right is 0, the "use voice display" check box under "sound" in the corresponding "Auxiliary Function options" is not selected. If you change the key value to 1, refresh the page, this check box is selected. The same is true for other sub-keys. They record the settings of the "Auxiliary Function" and the system will directly read the information from the sub-keys when they are started.

• Appearance sub-key: corresponds to "display" in "Control Panel. The scheme subkey under it is used to set the color scheme. These patterns are represented by hexadecimal values.

• Cursors subkey: corresponds to the "Pointer" tab in the "Mouse" in the "control panel" and displayed dialog box.

• Desktop sub-keys: their key values list various components in the desktop and window, such as the window border, title, icon, menu scroll bar, message box length, width, and font. Some of the data is on the "display" | "appearance" tab under "Control Panel.
• Colors subkeys: used to set the colors of various items (labels, menus, etc.) on the desktop. The corresponding position in the "control panel" is as above.
• Input Method subkey: corresponds to "details" under the "language" tab in the "region and language options" dialog box in "Control Panel ".
• International subkey: The data here can be modified by date and time under control panel.
• Keyboard subkey: corresponding to the "keyboard" under "Control Panel ". Keyboarddelay indicates the speed at which duplicate characters are input on the keyboard. Keyboardspeed indicates the repeated character input speed of the keyboard.
• Mouse subkey: corresponds to the mouse under the control panel ". Mousethreshold1 is used to set the double-click speed. Mousethreshold2 is used to set the moving speed of the mouse pointer trajectory.
• Powercfg subkey: corresponds to "power usage plan" in the "power options" dialog box under "Control Panel ".

Keyboard layout subkey:

Used to set the keyboard layout, such as the loading sequence of the keyboard language. It includes three subkeys:

• Preload sub-key: used to set the loading sequence of the keyboard language. Each sub-key under it represents a keyboard language installed in the system.

• Substitutes subkey: used to set the replaceable keyboard language layout, which is usually null.
• Toggle subkey: used to select the keyboard language.

Located under the root key HKEY_LOCAL_MACHINE:

Software subkey:

Contains system software, currently installed applications, and user-related information. The sub-key contains different content depending on the software installed by the individual. Uninstalling many installation programs. If they cannot be completely deleted, they should be cleared here.

System subkey:

Here, you can save the information used when the system is started and the information used to fix the system when the system fails. Including the description and configuration information of each driver, so the content on the computer is different. One of the most important branches is CurrentControlSet, which stores information about the current driver control set. Below it, there are two most important branches:

(1)Control subkey:The settings of various icon programs in the control panel are saved. You can modify the settings in the control panel. We do not recommend that you directly modify the settings in the registry because of its complexity and importance, may cause a crash. The main subkeys are:

• Fontassoc subkey: stores the font settings.

• NLS subkey: Set windows language features.
• Session Manager subkey: used to manage system sessions, which is the data required by the system dialog manager.
• Mediaresources subkey: Used to set media resources.
• Mediaproperties subkey: Set multimedia attributes.

• Filesystem sub-key: Set windows NTFs and other file systems.

• Shutdown subkey: used for shutdown settings, including quick shutdown.
• Keyboard layouts sub-key: Mainly used to set the keyboard layout or language for Windows. The subkey contains multiple subkeys about the keyboard language, which are expressed in numbers.
• Update subkey: used to determine whether the window of the control panel is refreshed.
• Timezoneinformation subkey: set the time zone information.
• Idconfigdb sub-key: used to display configuration data, configuration name, and other information of the hardware configuration file.
• Computername subkey: Set the computer name.
• Securityproviders subkey: sets the security function of the network supplier.

Services subkey:The sub-keys under Windows Store the configuration and description of the services.

• RemoteAccess sub-key: stores information related to Windows dialing. authentication is used to set the authentication information for the dial-up network, and networkprovider is used to set the driver for the dial-up network.

• Winsock subkey: stores Winsock information used when the system is connected to the Internet. The autodial subkey is used to set automatic dialing, and the parameters subkey is used to set the Winsock parameter.
• Protectedstorage sub-key: stores system-protected system storage information.