Windows Registry API

Overview

The Windows Registry is a vast database of information about your computer. The Registry API provides tools to read, write, and manipulate this database.

Key Concepts

• **Key:** A unique identifier for a piece of information.
• **Value:** The data associated with a key.
• **Entries:** Collections of keys and values.
• **Sections:** Groups of entries, often organized by type (e.g., Windows, Security, Control Panel).

Common Operations

This page provides some basic examples of common Registry API operations:

• `RegCreateKey()`: Creates a new registry key.
• `RegQueryValue()`: Retrieves the value of a registry key.
• `RegDeleteValue()`: Deletes a registry key.
• `RegCreateEntry()`: Creates a new entry in the registry.
• `RegDeleteEntry()`: Deletes an entry from the registry.
• `RegSetValue()`: Writes a value to a registry key.
• `RegGetValue()`: Retrieves a value from a registry key.

Example (Read a Key)

Let's read the value of the 'HKEY_CURRENT_USER' key:

RegQueryValue("HKEY_CURRENT_USER")

This will return the value of the key.

Example (Create a Key)

Let's create a new key called 'MyKey':

RegCreateKey("MyKey")

This will create the key in the registry.

Example (Delete a Key)

Let's delete the 'MyKey' key:

RegDeleteValue("MyKey")

This removes the key from the registry.

Example (Get a Key's Value)

Let's retrieve the value of 'MyKey':

RegGetValue("MyKey")

This returns the value of the key.

Disclaimer

The Windows Registry API can be complex. Refer to Microsoft's documentation for more details.