def EnumValue(key, index):
"""tuple = EnumValue(key, index) - Enumerates values of an open registry key.
key is an already open key, or any one of the predefined HKEY_* constants.
index is an integer that identifies the index of the value to retrieve.
The function retrieves the name of one subkey each time it is called.
It is typically called repeatedly, until an EnvironmentError exception
is raised, indicating no more values.
The result is a tuple of 3 items:
value_name is a string that identifies the value.
value_data is an object that holds the value data, and whose type depends
on the underlying registry type.
data_type is an integer that identifies the type of the value data.
"""
from cygwinreg3.w32api import RegQueryInfoKeyW, RegEnumValueW, reg_to_py
hkey = PyHKEY.make(key)
name_size = DWORD()
data_size = DWORD()
wincall(
RegQueryInfoKeyW(hkey, None, None, None, None, None, None, None,
byref(name_size), byref(data_size), None, None))
name_size.value += 1 # Include null terminators
data_size.value += 1
name_buf = create_unicode_buffer(name_size.value)
data_buf = create_string_buffer(data_size.value)
typ = DWORD()
wincall(
RegEnumValueW(hkey, index, name_buf, byref(name_size), None,
byref(typ), cast(data_buf, LPBYTE), byref(data_size)))
return (name_buf[:name_size.value], reg_to_py(data_buf, data_size,
typ), typ.value)
def SetValue(key, sub_key, value_type, value):
"""SetValue(key, sub_key, value_type, value) - Associates a value with a specified key.
key is an already open key, or any one of the predefined HKEY_* constants.
sub_key is a string that names the subkey with which the value is associated.
value_type is an integer that specifies the type of the data. Currently this
must be REG_SZ, meaning only strings are supported.
value is a string that specifies the new value.
If the key specified by the sub_key parameter does not exist, the SetValue
function creates it.
Value lengths are limited by available memory. Long values (more than
2048 bytes) should be stored as files with the filenames stored in
the configuration registry. This helps the registry perform efficiently.
The key identified by the key parameter must have been opened with
KEY_SET_VALUE access.
"""
from cygwinreg3.w32api import RegSetValueW
if value_type != REG_SZ:
raise TypeError("Type must be cygwinreg3.REG_SZ")
value_buf = create_unicode_buffer(value)
wincall(
RegSetValueW(PyHKEY.make(key), sub_key, REG_SZ, value_buf,
sizeof(value_buf)))
def DeleteValue(key, value):
"""DeleteValue(key, value) - Removes a named value from a registry key.
key is an already open key, or any one of the predefined HKEY_* constants.
value is a string that identifies the value to remove.
"""
from cygwinreg3.w32api import RegDeleteValueW
wincall(RegDeleteValueW(PyHKEY.make(key), value))
def Close(self):
"""key.Close() - Closes the underlying Windows handle.
If the handle is already closed, no error is raised.
"""
from cygwinreg3.w32api import RegCloseKey
wincall(RegCloseKey(self.hkey))
self.hkey = 0
def DeleteKey(key, sub_key):
"""DeleteKey(key, sub_key) - Deletes the specified key.
key is an already open key, or any one of the predefined HKEY_* constants.
sub_key is a string that must be a subkey of the key identified by the key parameter.
This value must not be None, and the key may not have subkeys.
This method can not delete keys with subkeys.
If the method succeeds, the entire key, including all of its values,
is removed. If the method fails, an EnvironmentError exception is raised.
"""
from cygwinreg3.w32api import RegDeleteKeyW
wincall(RegDeleteKeyW(PyHKEY.make(key), sub_key))
def FlushKey(key):
"""FlushKey(key) - Writes all the attributes of a key to the registry.
key is an already open key, or any one of the predefined HKEY_* constants.
It is not necessary to call RegFlushKey to change a key.
Registry changes are flushed to disk by the registry using its lazy flusher.
Registry changes are also flushed to disk at system shutdown.
Unlike CloseKey(), the FlushKey() method returns only when all the data has
been written to the registry.
An application should only call FlushKey() if it requires absolute certainty that registry changes are on disk.
If you don't know whether a FlushKey() call is required, it probably isn't.
"""
from cygwinreg3.w32api import RegFlushKey
wincall(RegFlushKey(PyHKEY.make(key)))
def ConnectRegistry(computer_name, key):
"""key = ConnectRegistry(computer_name, key) - Establishes a connection to a predefined registry handle on another computer.
computer_name is the name of the remote computer, of the form \\computername.
If None, the local computer is used.
key is the predefined handle to connect to.
The return value is the handle of the opened key.
If the function fails, an EnvironmentError exception is raised.
"""
from cygwinreg3.w32api import RegConnectRegistryW
result = HKEY()
wincall(RegConnectRegistryW(computer_name, PyHKEY.make(key),
byref(result)))
return PyHKEY(result.value)
def SaveKey(key, file_name):
"""SaveKey(key, file_name) - Saves the specified key, and all its subkeys to the specified file.
key is an already open key, or any one of the predefined HKEY_* constants.
file_name is the name of the file to save registry data to.
This file cannot already exist. If this filename includes an extension,
it cannot be used on file allocation table (FAT) file systems by the
LoadKey(), ReplaceKey() or RestoreKey() methods.
If key represents a key on a remote computer, the path described by
file_name is relative to the remote computer.
The caller of this method must possess the SeBackupPrivilege security privilege.
This function passes NULL for security_attributes to the API.
"""
from cygwinreg3.w32api import RegSaveKeyW
wincall(RegSaveKeyW(PyHKEY.make(key), file_name, None))
def OpenKey(key, sub_key, res=0, sam=KEY_READ):
"""key = OpenKey(key, sub_key, res = 0, sam = KEY_READ) - Opens the specified key.
key is an already open key, or any one of the predefined HKEY_* constants.
sub_key is a string that identifies the sub_key to open
res is a reserved integer, and must be zero. Default is zero.
sam is an integer that specifies an access mask that describes the desired
security access for the key. Default is KEY_READ
The result is a new handle to the specified key
If the function fails, an EnvironmentError exception is raised.
"""
from cygwinreg3.w32api import RegOpenKeyExW
result = HKEY()
wincall(RegOpenKeyExW(PyHKEY.make(key), sub_key, res, sam, byref(result)))
return PyHKEY.make(result.value)
def EnumKey(key, index):
"""string = EnumKey(key, index) - Enumerates subkeys of an open registry key.
key is an already open key, or any one of the predefined HKEY_* constants.
index is an integer that identifies the index of the key to retrieve.
The function retrieves the name of one subkey each time it is called.
It is typically called repeatedly until an EnvironmentError exception is
raised, indicating no more values are available.
"""
from cygwinreg3.w32api import RegEnumKeyExW
buf = create_unicode_buffer(256) # max key name length is 255
length = DWORD(sizeof(buf))
wincall(
RegEnumKeyExW(PyHKEY.make(key), index, buf, byref(length), None, None,
None, None))
return buf[:length.value]
def CreateKey(key, sub_key):
"""key = CreateKey(key, sub_key) - Creates or opens the specified key.
key is an already open key, or one of the predefined HKEY_* constants
sub_key is a string that names the key this method opens or creates.
If key is one of the predefined keys, sub_key may be None. In that case,
the handle returned is the same key handle passed in to the function.
If the key already exists, this function opens the existing key
The return value is the handle of the opened key.
If the function fails, an exception is raised.
"""
from cygwinreg3.w32api import RegCreateKeyW
result = HKEY()
wincall(RegCreateKeyW(PyHKEY.make(key), sub_key, byref(result)))
return PyHKEY(result.value)
def QueryValueEx(key, value_name):
"""value,type_id = QueryValueEx(key, value_name) - Retrieves the type and data for a specified value name associated with an open registry key.
key is an already open key, or any one of the predefined HKEY_* constants.
value_name is a string indicating the value to query
"""
from cygwinreg3.w32api import RegQueryValueExW, reg_to_py
hkey = PyHKEY.make(key)
buf_size = DWORD()
wincall(
RegQueryValueExW(hkey, value_name, None, None, None, byref(buf_size)))
# buf is a byte array
buf = create_string_buffer(buf_size.value)
typ = DWORD()
wincall(
RegQueryValueExW(hkey, value_name, None, byref(typ), cast(buf, LPBYTE),
byref(buf_size)))
return (reg_to_py(buf, buf_size, typ), typ.value)
def QueryValue(key, sub_key):
"""string = QueryValue(key, sub_key) - retrieves the unnamed value for a key.
key is an already open key, or any one of the predefined HKEY_* constants.
sub_key is a string that holds the name of the subkey with which the value
is associated. If this parameter is None or empty, the function retrieves
the value set by the SetValue() method for the key identified by key."
Values in the registry have name, type, and data components. This method
retrieves the data for a key's first value that has a NULL name.
But the underlying API call doesn't return the type, Lame Lame Lame, DONT USE THIS!!!
"""
from cygwinreg3.w32api import RegQueryValueW
hkey = PyHKEY.make(key)
buf_size = LONG()
wincall(RegQueryValueW(hkey, sub_key, None, byref(buf_size)))
buf = create_unicode_buffer(buf_size.value)
wincall(RegQueryValueW(hkey, sub_key, buf, byref(buf_size)))
return buf.value
def LoadKey(key, sub_key, file_name):
"""LoadKey(key, sub_key, file_name) - Creates a subkey under the specified key
and stores registration information from a specified file into that subkey.
key is an already open key, or any one of the predefined HKEY_* constants.
sub_key is a string that identifies the sub_key to load
file_name is the name of the file to load registry data from.
This file must have been created with the SaveKey() function.
Under the file allocation table (FAT) file system, the filename may not
have an extension.
A call to LoadKey() fails if the calling process does not have the
SE_RESTORE_PRIVILEGE privilege.
If key is a handle returned by ConnectRegistry(), then the path specified
in fileName is relative to the remote computer.
The docs imply key must be in the HKEY_USER or HKEY_LOCAL_MACHINE tree
"""
from cygwinreg3.w32api import RegLoadKeyW
wincall(RegLoadKeyW(PyHKEY.make(key), sub_key, file_name))
def QueryInfoKey(key):
"""tuple = QueryInfoKey(key) - Returns information about a key.
key is an already open key, or any one of the predefined HKEY_* constants.
The result is a tuple of 3 items:"
An integer that identifies the number of sub keys this key has.
An integer that identifies the number of values this key has.
A long integer that identifies when the key was last modified (if available)
as 100's of nanoseconds since Jan 1, 1600.
"""
from cygwinreg3.w32api import RegQueryInfoKeyW
num_sub_keys = DWORD()
num_values = DWORD()
last_write_time = FILETIME()
wincall(
RegQueryInfoKeyW(PyHKEY.make(key), None, None,
None, byref(num_sub_keys), None, None,
byref(num_values), None, None, None,
byref(last_write_time)))
last_write_time = (last_write_time.dwHighDateTime << 32
| last_write_time.dwLowDateTime)
return (num_sub_keys.value, num_values.value, last_write_time)
def SetValueEx(key, value_name, reserved, value_type, value):
"""SetValueEx(key, value_name, reserved, value_type, value) - Stores data in the value field of an open registry key.
key is an already open key, or any one of the predefined HKEY_* constants.
value_name is a string containing the name of the value to set, or None
value_type is an integer that specifies the type of the data. This should be one of:
REG_BINARY -- Binary data in any form.
REG_DWORD -- A 32-bit number.
REG_DWORD_LITTLE_ENDIAN -- A 32-bit number in little-endian format.
REG_DWORD_BIG_ENDIAN -- A 32-bit number in big-endian format.
REG_EXPAND_SZ -- A null-terminated string that contains unexpanded references
to environment variables (for example, %PATH%).
REG_LINK -- A Unicode symbolic link.
REG_MULTI_SZ -- An sequence of null-terminated strings, terminated by
two null characters. Note that Python handles this
termination automatically.
REG_NONE -- No defined value type.
REG_RESOURCE_LIST -- A device-driver resource list.
REG_SZ -- A null-terminated string.
reserved can be anything - zero is always passed to the API.
value is a string that specifies the new value.
This method can also set additional value and type information for the
specified key. The key identified by the key parameter must have been
opened with KEY_SET_VALUE access.
To open the key, use the CreateKeyEx() or OpenKeyEx() methods.
Value lengths are limited by available memory. Long values (more than
2048 bytes) should be stored as files with the filenames stored in
the configuration registry. This helps the registry perform efficiently.
"""
from cygwinreg3.w32api import RegSetValueExW, py_to_reg
buf = py_to_reg(value, value_type)
wincall(
RegSetValueExW(PyHKEY.make(key), value_name, 0, value_type,
cast(buf, LPBYTE), len(memoryview(buf))))
