def ReadFile(file, buffer, number_of_bytes_to_read, number_of_bytes_read, overlapped):
"""See: ReadFile function
https://msdn.microsoft.com/en-us/library/windows/desktop/aa365467(v=vs.85).aspx
"""
ReadFile_Fn = windll.kernel32.ReadFile
ReadFile_Fn.argtypes = [
wintypes.HANDLE, # _In_ HANDLE hFile,
LPVOID, # _Out_ LPVOID lpBuffer,
wintypes.DWORD, # _In_ DWORD nNumberOfBytesToRead,
LPDWORD, # _Out_opt_ LPDWORD lpNumberOfBytesRead,
LPOVERLAPPED # _Inout_opt_ LPOVERLAPPED lpOverlapped
]
ReadFile_Fn.restype = wintypes.BOOL
ret = wintypes.BOOL(ReadFile_Fn(
file,
buffer,
number_of_bytes_to_read,
number_of_bytes_read,
overlapped
))
python类LPVOID的实例源码
def send_ioctl(self, ioctl, inbuf, inbufsiz, outbuf, outbufsiz):
"""See: DeviceIoControl function
http://msdn.microsoft.com/en-us/library/aa363216(v=vs.85).aspx
"""
DeviceIoControl_Fn = windll.kernel32.DeviceIoControl
DeviceIoControl_Fn.argtypes = [
wintypes.HANDLE, # _In_ HANDLE hDevice
wintypes.DWORD, # _In_ DWORD dwIoControlCode
wintypes.LPVOID, # _In_opt_ LPVOID lpInBuffer
wintypes.DWORD, # _In_ DWORD nInBufferSize
wintypes.LPVOID, # _Out_opt_ LPVOID lpOutBuffer
wintypes.DWORD, # _In_ DWORD nOutBufferSize
LPDWORD, # _Out_opt_ LPDWORD lpBytesReturned
LPOVERLAPPED] # _Inout_opt_ LPOVERLAPPED lpOverlapped
DeviceIoControl_Fn.restype = wintypes.BOOL
print ioctl
# allocate a DWORD, and take its reference
dwBytesReturned = wintypes.DWORD(0)
lpBytesReturned = ctypes.byref(dwBytesReturned)
status = DeviceIoControl_Fn(self.handle,
ioctl,
inbuf,
inbufsiz,
outbuf,
outbufsiz,
lpBytesReturned,
None)
return status, dwBytesReturned
def _link(src, dst, linktype=LINK_HARD):
if linktype == LINK_HARD:
if on_win:
from ctypes import windll, wintypes
CreateHardLink = windll.kernel32.CreateHardLinkW
CreateHardLink.restype = wintypes.BOOL
CreateHardLink.argtypes = [wintypes.LPCWSTR, wintypes.LPCWSTR,
wintypes.LPVOID]
if not CreateHardLink(dst, src, None):
raise OSError('win32 hard link failed')
else:
os.link(src, dst)
elif linktype == LINK_COPY:
# copy relative symlinks as symlinks
if islink(src) and not os.readlink(src).startswith(os.path.sep):
os.symlink(os.readlink(src), dst)
else:
shutil.copy2(src, dst)
else:
raise Exception("Did not expect linktype=%r" % linktype)
def _set_internet_options(self, setting, on=True):
"""
Sets the internet options
"""
InternetSetOption = windll.wininet.InternetSetOptionW
InternetSetOption.argtypes = [LPVOID, DWORD, LPVOID, DWORD]
InternetSetOption.restype = BOOL
List = INTERNET_PER_CONN_OPTION_LIST()
Option = (INTERNET_PER_CONN_OPTION * 3)()
nSize = c_ulong(sizeof(INTERNET_PER_CONN_OPTION_LIST))
Option[0].dwOption = self.INTERNET_PER_CONN_FLAGS
Option[0].Value.dwValue = (2 if on else 1)
Option[1].dwOption = self.INTERNET_PER_CONN_PROXY_SERVER
Option[1].Value.pszValue = setting
Option[2].dwOption = self.INTERNET_PER_CONN_PROXY_BYPASS
Option[2].Value.pszValue = create_unicode_buffer('<-loopback>')
List.dwSize = sizeof(INTERNET_PER_CONN_OPTION_LIST)
List.pszConnection = None
List.dwOptionCount = 3
List.dwOptionError = 0
List.pOptions = Option
InternetSetOption(None, self.INTERNET_OPTION_PER_CONNECTION_OPTION, byref(List), nSize)
InternetSetOption(None, self.INTERNET_OPTION_SETTINGS_CHANGED, None, 0)
InternetSetOption(None, self.INTERNET_OPTION_REFRESH, None, 0)
# pylint: disable=too-few-public-methods
def send_ioctl(self, ioctl, inbuf, inbufsiz, outbuf, outbufsiz):
"""See: DeviceIoControl function
http://msdn.microsoft.com/en-us/library/aa363216(v=vs.85).aspx
"""
DeviceIoControl_Fn = windll.kernel32.DeviceIoControl
DeviceIoControl_Fn.argtypes = [
wintypes.HANDLE, # _In_ HANDLE hDevice
wintypes.DWORD, # _In_ DWORD dwIoControlCode
wintypes.LPVOID, # _In_opt_ LPVOID lpInBuffer
wintypes.DWORD, # _In_ DWORD nInBufferSize
wintypes.LPVOID, # _Out_opt_ LPVOID lpOutBuffer
wintypes.DWORD, # _In_ DWORD nOutBufferSize
LPDWORD, # _Out_opt_ LPDWORD lpBytesReturned
LPOVERLAPPED] # _Inout_opt_ LPOVERLAPPED lpOverlapped
DeviceIoControl_Fn.restype = wintypes.BOOL
# allocate a DWORD, and take its reference
dwBytesReturned = wintypes.DWORD(0)
lpBytesReturned = ctypes.byref(dwBytesReturned)
status = DeviceIoControl_Fn(self.handle,
ioctl,
inbuf,
inbufsiz,
outbuf,
outbufsiz,
lpBytesReturned,
None)
return status, dwBytesReturned
def __init__(self, folder):
self.folder = folder
# Check the best way to do atomic file replacement.
if sys.version_info >= (3, 3):
self.replace = os.replace
elif sys.platform == "win32":
import ctypes
from ctypes import wintypes
ReplaceFile = ctypes.windll.kernel32.ReplaceFileW
ReplaceFile.restype = wintypes.BOOL
ReplaceFile.argtypes = [
wintypes.LPWSTR,
wintypes.LPWSTR,
wintypes.LPWSTR,
wintypes.DWORD,
wintypes.LPVOID,
wintypes.LPVOID,
]
def replace_windows(src, dst):
if not ReplaceFile(dst, src, None, 0, 0, 0):
os.rename(src, dst)
self.replace = replace_windows
else:
# POSIX rename() is always atomic
self.replace = os.rename
