Tcl Bundled Packages registry(1T)
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NAME
registry - Manipulate the Windows registry
SYNOPSIS
package require registry 1.1
registry option keyName ?arg arg ...?
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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 commandshould 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 thatexports 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 (\)
characters.Option indicates what to do with the registry key name. Any
unique abbreviation for option is acceptable. The valid options are: |registry broadcast keyName ?- |
timeout milliseconds? | | Sends a broadcast message to the system and running | programs to notify them of certain updates. This is |necessary to propagate changes to key registry keys |
like Environment. The timeout specifies the amount of | time, in milliseconds, to wait for applications to | respond to the broadcast message. It defaults to 3000. | The following example demonstrates how to add a path to | the global Environment and notify applications of the | change without requiring a logoff/logon step (assumes |registry Last change: 1.1 1
Tcl Bundled Packages registry(1T)
admin privileges): |set regPath {HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Environment}|
set curPath [registry get $regPath "Path"] |
registry set $regPath "Path" "$curPath;$addPath" |
registry broadcast "Environment" |
registry delete keyName ?valueName?
If the optional valueName argument is present, the specified value under keyName will be deleted from theregistry. If the optional valueName is omitted, the
specified key and any subkeys or values beneath it inthe registry hierarchy 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 moredetails on the format of the returned data, see SUP-
PORTED 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. Match-
ing 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 keyNameif it doesn't already exist. If valueName is speci-
fied, creates the key keyName and value valueName if necessary. The contents of valueName are set to datawith the type indicated by type. If type isn't speci-
fied, 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 key-
Name. 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. Match-
ing is determined using the same rules as for string match.registry Last change: 1.1 2
Tcl Bundled Packages registry(1T)
SUPPORTED TYPESEach 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 representa-
tion 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, theregistry command returns the data in a different form to
make it easier to manipulate. The following types arerecognized 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 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 embeddedregistry Last change: 1.1 3
Tcl Bundled Packages registry(1T)
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 ISSUESThe registry command is only available on Windows.
EXAMPLE
Print out how double-clicking on a Tcl script file will
invoke a Tcl interpreter:package require registry
set ext .tcl# Read the type name
set type [registry get HKEY_CLASSES_ROOT\\$ext {}]
# Work out where to look for the command
set path HKEY_CLASSES_ROOT\\$type\\Shell\\Open\\command
# Read the command!
set command [registry get $path {}]
puts "$ext opens with $command"
KEYWORDSregistry
ATTRIBUTES
See attributes(5) for descriptions of the following attri-
butes:_______________________________________
| ATTRIBUTE TYPE | ATTRIBUTE VALUE|
|____________________|__________________|_
| Availability | runtime/tcl-8 |
|____________________|__________________|_
| Interface Stability| Uncommitted ||____________________|_________________|
NOTES Source for Tcl is available on http://opensolaris.org.registry Last change: 1.1 4