NAME
       registry - Manipulate the Windows registry

SYNOPSIS
       package require registry 1.0

       registry option keyName ?arg arg ...?


DESCRIPTION
       The  registry package provides a general set of operations
       for manipulating the Windows registry.  The package imple-
       ments the registry Tcl command.  This command is only sup-
       ported on the Windows  platform.   Warning:  this  command
       should  be  used  with caution as a corrupted registry can
       leave your system in an unusable state.

       KeyName is the name of a registry key.  Registry keys must
       be one of the following forms:

              \\hostname\rootname\keypath

              rootname\keypath

              rootname

       Hostname specifies the name of any valid Windows host that
       exports its registry.  The rootname component must be  one
       of   HKEY_LOCAL_MACHINE,   HKEY_USERS,  HKEY_CLASSES_ROOT,
       HKEY_CURRENT_USER,    HKEY_CURRENT_CONFIG,    HKEY_PERFOR-
       MANCE_DATA,  or  HKEY_DYN_DATA.  The keypath can be one or
       more registry key names separated by backslash (\) charac-
       ters.

       Option  indicates  what  to do with the registry key name.
       Any unique abbreviation for  option  is  acceptable.   The
       valid options are:

       registry delete keyName ?valueName?
              If  the optional valueName argument is present, the
              specified value under keyName will be deleted  from
              the  registry.   If the optional valueName is omit-
              ted, the specified key and any  subkeys  or  values
              beneath  it  in  the  registry  heirarchy  will  be
              deleted.  If the key could not be deleted  then  an
              error  is generated.  If the key did not exist, the
              command has no effect.

       registry get keyName valueName
              Returns the data associated with the  value  value-
              Name  under  the key keyName.  If either the key or
              the value does not exist, then an error  is  gener-
              ated.   For  more  details  on  the  format  of the
              returned data, see SUPPORTED TYPES, below.
       registry keys keyName ?pattern?
              If pattern isn't specified, returns a list of names
              of all the subkeys of keyName.  If pattern is spec-
              ified,  only  those  names  matching  pattern   are
              returned.   Matching  is  determined using the same
              rules as for string match.  If the  specified  key-
              Name does not exist, then an error is generated.

       registry set keyName ?valueName data ?type??
              If  valueName isn't specified, creates the key key-
              Name if it doesn't already exist.  If valueName  is
              specified, creates the key keyName and value value-
              Name if necessary.  The contents of  valueName  are
              set  to  data  with the type indicated by type.  If
              type isn't specified, the type sz is assumed.   For
              more  details  on  the data and type arguments, see
              SUPPORTED TYPES below.

       registry type keyName valueName
              Returns the type of the value valueName in the  key
              keyName.   For  more  information  on  the possible
              types, see SUPPORTED TYPES, below.

       registry values keyName ?pattern?
              If pattern isn't specified, returns a list of names
              of all the values of keyName.  If pattern is speci-
              fied,  only  those  names  matching   pattern   are
              returned.   Matching  is  determined using the same
              rules as for string match.


SUPPORTED TYPES
       Each value under a key in the registry contains some  data
       of  a  particular  type in a type-specific representation.
       The registry command converts between this internal repre-
       sentation  and one that can be manipulated by Tcl scripts.
       In most cases, the  data  is  simply  returned  as  a  Tcl
       string.  The type indicates the intended use for the data,
       but does not actually change the representation.  For some
       types,  the registry command returns the data in a differ-
       ent form to make it easier to manipulate.   The  following
       types are recognized by the registry command:

       binary           The  registry  value  contains  arbitrary
                        binary data.   The  data  is  represented
                        exactly  in  Tcl,  including any embedded
                        nulls.

       none             The  registry  value  contains  arbitrary
                        binary  data  with  no defined type.  The
                        data  is  represented  exactly  in   Tcl,
                        including any embedded nulls.

       sz               The   registry  value  contains  a  null-
                        terminated string.  The  data  is  repre-
                        sented in Tcl as a string.

       expand_sz        The registry value contains a null-termi-
                        nated  string  that  contains  unexpanded
                        references  to  environment  variables in
                        the normal Windows  style  (for  example,
                        "%PATH%").   The  data  is represented in
                        Tcl as a string.

       dword            The registry  value  contains  a  little-
                        endian 32-bit number.  The data is repre-
                        sented in Tcl as a decimal string.

       dword_big_endian The registry value contains a  big-endian
                        32-bit  number.   The data is represented
                        in Tcl as a decimal string.

       link             The registry value  contains  a  symbolic
                        link.  The data is represented exactly in
                        Tcl, including any embedded nulls.

       multi_sz         The registry value contains an  array  of
                        null-terminated  strings.   The  data  is
                        represented in Tcl as a list of  strings.

       resource_list    The  registry  value  contains  a device-
                        driver resource list.  The data is repre-
                        sented  exactly  in  Tcl,  including  any
                        embedded nulls.

       In addition to the symbolically named types listed  above,
       unknown  types  are identified using a 32-bit integer that
       corresponds to the type code returned by the system inter-
       faces.   In  this case, the data is represented exactly in
       Tcl, including any embedded nulls.


PORTABILITY ISSUES
       The registry command is only available on Windows.


KEYWORDS
       registry
