registry (n)
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 implements the
registry Tcl command. This command is only supported 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:
\e\ehostname\erootname\ekeypath
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_PERFORMANCE_DATA, or
HKEY_DYN_DATA. The keypath can be one or more
registry key names separated by backslash (\e) characters.
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 omitted, 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 valueName under the key
keyName. If either the key or the value does not exist, then an
error is generated. 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 specified, only those
names matching pattern are returned. Matching is determined
using the same rules as for string match. If the
specified keyName does not exist, then an error is generated.
registry set keyName ?valueName data ?type??
If valueName isn't specified, creates the key keyName if
it doesn't already exist. If valueName is specified, creates
the key keyName and value valueName 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 specified, 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 representation 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 different 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.
Tcl
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
represented in Tcl as a string.
expand_sz
The registry value contains a null-terminated 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
represented 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 represented 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 interfaces. 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
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