Deleting registry keys recursively on windows.

main.go

package main

import (
	"golang.org/x/sys/windows/registry"
	"io"
	"log"
)

func main() {
	key, err := registry.OpenKey(registry.CURRENT_USER, "Test", registry.ALL_ACCESS)
	if err != nil {
		log.Fatalln(err)
	}

	err = deleteRegistryKey(key)
	if err != nil {
		log.Fatalln(err)
	}
}

func deleteRegistryKey(key registry.Key) error {
	// Find all the value names inside the key and delete them.
	valueNames, err := key.ReadValueNames(1000)
	if err != nil && err != io.EOF {
		return err
	}

	for _, valueName := range valueNames {
		err = key.DeleteValue(valueName)
		if err != nil && err != io.EOF {
			return err
		}
	}

	// Find the subkeys and delete those recursively.
	subkeyNames, err := key.ReadSubKeyNames(1000)
	if err != nil && err != io.EOF {
		return err
	}

	for _, subkeyName := range subkeyNames {
		subKey, err := registry.OpenKey(key, subkeyName, registry.ALL_ACCESS)
		if err != nil {
			return err
		}

		err = deleteRegistryKey(subKey)
		if err != nil {
			return err
		}
	}

	// Then delete itself.
	return registry.DeleteKey(key, "")
}