Can't set integer values.

Not certain if createRegistryKey() works recursively.

Fixed

createRegistryKey() returns NULL if the key already exists.

It should return the key. And does.

Delete a key - recursively.

Works if we use RegDeleteValue, but not with RegDeleteKey. Where is SHDeleteKey located for recursive deletes? shlwapi.dll

Does this work correctly for nested keys?

Make this work recursively.

Default values

Key objects returned so don't have to keep opening them, etc.

At least return the full path. - Done.

Create key folders

createRegistryKey does this.