




The function delete-registry-key deletes the registry key named subkey under the parent key root.
subkey and root are interpreted as described for create-registry-key. The default value of root is :user.
The value t is returned if the key is deleted successfully.
If an error occurs and errorp is true then an error is signaled. Otherwise, the return values are nil and the Windows error-code. The default value of errorp is t.
LispWorks User Guide and Reference Manual - 20 Sep 2017