key

A string whose value names the key in
the system registry whose value you want to set.

To uniquely identify a key, specify the list of parent keys
above it in the hierarchy, starting with the root key. The keys
in the list are separated by backslashes.

If key does not exist in the registry, RegistrySet creates
a new key. To create a key without a named
value, specify an empty string for valuename.

valuename

A string containing the name of a value
in the registry. Each key may have several named values. To specify
the unnamed value, specify an empty string.

If valuename does not exist in the registry, RegistrySet causes
a new name to be created for key.

valuetype

A value of the RegistryValueType enumerated
datatype identifying the datatype of a value in the registry. Values
are:

• RegString! – A null-terminated
  string

• RegExpandString! – A null-terminated string
  that contains unexpanded references to environment variables

• RegBinary! – Binary data

• ReguLong! – A 32-bit number

• ReguLongBigEndian! – A 32-bit number

• RegLink! – A Unicode symbolic link

• RegMultiString! – An unbounded array of
  strings

value

A variable corresponding to the datatype
of valuetype containing a value to be set in
the registry.

Key

An element in the registry. A key is
part of a tree of keys, descending from one of the predefined root
keys. Each key is a subkey or child of the parent key above it in
the hierarchy.

There are four root strings:

• HKEY_CLASSES_ROOT

• HKEY_LOCAL_MACHINE

• HKEY_USERS

• HKEY_CURRENT_USER

A key is uniquely identified by the list of parent keys above it.
The keys in the list are separated by slashes, as shown in these
examples:

Value name

The name of a value belonging to the
key. A key can have one unnamed value and one or more named values.

Value type

A value identifying the datatype of a
value in the registry.

Value

A value associated with a value name
or an unnamed value. Several string, numeric, and binary datatypes
are supported by the registry.