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Your IP : 216.73.216.33
#
# (C) Copyright 2014 Enthought, Inc., Austin, TX
# All right reserved.
#
# This file is open source software distributed according to the terms in
# LICENSE.txt
#
""" A module, encapsulating the Windows Win32 API. """
from win32ctypes.core import (
_common, _dll, _resource, _system_information, _backend, _time)
from win32ctypes.pywin32.pywintypes import pywin32error as _pywin32error
LOAD_LIBRARY_AS_DATAFILE = 0x2
LANG_NEUTRAL = 0x00
def LoadLibraryEx(fileName, handle, flags):
""" Loads the specified DLL, and returns the handle.
Parameters
----------
fileName : unicode
The filename of the module to load.
handle : int
Reserved, always zero.
flags : int
The action to be taken when loading the module.
Returns
-------
handle : hModule
The handle of the loaded module
"""
if not handle == 0:
raise ValueError("handle != 0 not supported")
with _pywin32error():
return _dll._LoadLibraryEx(fileName, 0, flags)
def EnumResourceTypes(hModule):
""" Enumerates resource types within a module.
Parameters
----------
hModule : handle
The handle to the module.
Returns
-------
resource_types : list
The list of resource types in the module.
"""
resource_types = []
def callback(hModule, type_, param):
resource_types.append(type_)
return True
with _pywin32error():
_resource._EnumResourceTypes(
hModule, _resource.ENUMRESTYPEPROC(callback), 0)
return resource_types
def EnumResourceNames(hModule, resType):
""" Enumerates all the resources of the specified type within a module.
Parameters
----------
hModule : handle
The handle to the module.
resType : str : int
The type or id of resource to enumerate.
Returns
-------
resource_names : list
The list of resource names (unicode strings) of the specific
resource type in the module.
"""
resource_names = []
def callback(hModule, type_, type_name, param):
resource_names.append(type_name)
return True
with _pywin32error():
_resource._EnumResourceNames(
hModule, resType, _resource.ENUMRESNAMEPROC(callback), 0)
return resource_names
def EnumResourceLanguages(hModule, lpType, lpName):
""" List languages of a resource module.
Parameters
----------
hModule : handle
Handle to the resource module.
lpType : str : int
The type or id of resource to enumerate.
lpName : str : int
The type or id of resource to enumerate.
Returns
-------
resource_languages : list
List of the resource language ids.
"""
resource_languages = []
def callback(hModule, type_name, res_name, language_id, param):
resource_languages.append(language_id)
return True
with _pywin32error():
_resource._EnumResourceLanguages(
hModule, lpType, lpName, _resource.ENUMRESLANGPROC(callback), 0)
return resource_languages
def LoadResource(hModule, type, name, language=LANG_NEUTRAL):
""" Find and Load a resource component.
Parameters
----------
handle : hModule
The handle of the module containing the resource.
Use None for current process executable.
type : str : int
The type of resource to load.
name : str : int
The name or Id of the resource to load.
language : int
Language to use, default is LANG_NEUTRAL.
Returns
-------
resource : bytes
The byte string blob of the resource
"""
with _pywin32error():
hrsrc = _resource._FindResourceEx(hModule, type, name, language)
size = _resource._SizeofResource(hModule, hrsrc)
hglob = _resource._LoadResource(hModule, hrsrc)
if _backend == 'ctypes':
pointer = _common.cast(
_resource._LockResource(hglob), _common.c_char_p)
else:
pointer = _resource._LockResource(hglob)
return _common._PyBytes_FromStringAndSize(pointer, size)
def FreeLibrary(hModule):
""" Free the loaded dynamic-link library (DLL) module.
If necessary, decrements its reference count.
Parameters
----------
handle : hModule
The handle to the library as returned by the LoadLibrary function.
"""
with _pywin32error():
return _dll._FreeLibrary(hModule)
def GetTickCount():
""" The number of milliseconds that have elapsed since startup
Returns
-------
counts : int
The millisecond counts since system startup.
"""
return _time._GetTickCount()
def BeginUpdateResource(filename, delete):
""" Get a handle that can be used by the :func:`UpdateResource`.
Parameters
----------
fileName : unicode
The filename of the module to load.
delete : bool
When true all existing resources are deleted
Returns
-------
result : hModule
Handle of the resource.
"""
with _pywin32error():
return _resource._BeginUpdateResource(filename, delete)
def EndUpdateResource(handle, discard):
""" End the update resource of the handle.
Parameters
----------
handle : hModule
The handle of the resource as it is returned
by :func:`BeginUpdateResource`
discard : bool
When True all writes are discarded.
"""
with _pywin32error():
_resource._EndUpdateResource(handle, discard)
def UpdateResource(handle, type, name, data, language=LANG_NEUTRAL):
""" Update a resource.
Parameters
----------
handle : hModule
The handle of the resource file as returned by
:func:`BeginUpdateResource`.
type : str : int
The type of resource to update.
name : str : int
The name or Id of the resource to update.
data : bytes
A bytes like object is expected.
.. note::
PyWin32 version 219, on Python 2.7, can handle unicode inputs.
However, the data are stored as bytes and it is not really
possible to convert the information back into the original
unicode string. To be consistent with the Python 3 behaviour
of PyWin32, we raise an error if the input cannot be
converted to `bytes`.
language : int
Language to use, default is LANG_NEUTRAL.
"""
with _pywin32error():
try:
lp_data = bytes(data)
except UnicodeEncodeError:
raise TypeError(
"a bytes-like object is required, not a 'unicode'")
_resource._UpdateResource(
handle, type, name, language, lp_data, len(lp_data))
def GetWindowsDirectory():
""" Get the ``Windows`` directory.
Returns
-------
result : str
The path to the ``Windows`` directory.
"""
with _pywin32error():
# Note: pywin32 returns str on py27, unicode (which is str) on py3
return str(_system_information._GetWindowsDirectory())
def GetSystemDirectory():
""" Get the ``System`` directory.
Returns
-------
result : str
The path to the ``System`` directory.
"""
with _pywin32error():
# Note: pywin32 returns str on py27, unicode (which is str) on py3
return str(_system_information._GetSystemDirectory())