I'd like to force QuickEdit Mode in the console when running a python script and then disable it right before terminating. Is there a way to do that?

解決方案

ctypes definitions:

import msvcrt

import atexit

import ctypes

from ctypes import wintypes

kernel32 = ctypes.WinDLL('kernel32', use_last_error=True)

# input flags

ENABLE_PROCESSED_INPUT = 0x0001

ENABLE_LINE_INPUT = 0x0002

ENABLE_ECHO_INPUT = 0x0004

ENABLE_WINDOW_INPUT = 0x0008

ENABLE_MOUSE_INPUT = 0x0010

ENABLE_INSERT_MODE = 0x0020

ENABLE_QUICK_EDIT_MODE = 0x0040

ENABLE_EXTENDED_FLAGS = 0x0080

# output flags

ENABLE_PROCESSED_OUTPUT = 0x0001

ENABLE_WRAP_AT_EOL_OUTPUT = 0x0002

ENABLE_VIRTUAL_TERMINAL_PROCESSING = 0x0004 # VT100 (Win 10)

def check_zero(result, func, args):

if not result:

err = ctypes.get_last_error()

if err:

raise ctypes.WinError(err)

return args

if not hasattr(wintypes, 'LPDWORD'): # PY2

wintypes.LPDWORD = ctypes.POINTER(wintypes.DWORD)

kernel32.GetConsoleMode.errcheck= check_zero

kernel32.GetConsoleMode.argtypes = (

wintypes.HANDLE, # _In_ hConsoleHandle

wintypes.LPDWORD,) # _Out_ lpMode

kernel32.SetConsoleMode.errcheck= check_zero

kernel32.SetConsoleMode.argtypes = (

wintypes.HANDLE, # _In_ hConsoleHandle

wintypes.DWORD,) # _Out_ lpMode

The following wraps the underlying WinAPI functions as get_console_mode and set_console_mode. I've limited the wrappers to operating on just the console's active input buffer or active output buffer, i.e. \\.\CONIN$ and \\.\CONOUT$. I think this is simpler than having to worry about file descriptors and handles. Notably sys.stdin and sys.stdout may be redirected elsewhere, as may also be the case for the C runtime's standard I/O FILE streams, file descriptors, and the Windows standard handles that you can get from GetStdHandle. In these cases you can still open CONIN$ and CONOUT$, as long as the process is attached to a console.

def get_console_mode(output=False):

'''Get the mode of the active console input or output

buffer. Note that if the process isn't attached to a

console, this function raises an EBADF IOError.

'''

device = r'\\.\CONOUT$' if output else r'\\.\CONIN$'

with open(device, 'r+') as con:

mode = wintypes.DWORD()

hCon = msvcrt.get_osfhandle(con.fileno())

kernel32.GetConsoleMode(hCon, ctypes.byref(mode))

return mode.value

def set_console_mode(mode, output=False):

'''Set the mode of the active console input or output

buffer. Note that if the process isn't attached to a

console, this function raises an EBADF IOError.

'''

device = r'\\.\CONOUT$' if output else r'\\.\CONIN$'

with open(device, 'r+') as con:

hCon = msvcrt.get_osfhandle(con.fileno())

kernel32.SetConsoleMode(hCon, mode)

update_console_mode combines the latter functions to let you pass in the flags you want to set and the mask of flags to modify. This includes flags to clear. It also allows restoring the previous mode by registering an atexit function.

def update_console_mode(flags, mask, output=False, restore=False):

'''Update a masked subset of the current mode of the active

console input or output buffer. Note that if the process

isn't attached to a console, this function raises an

EBADF IOError.

'''

current_mode = get_console_mode(output)

if current_mode & mask != flags & mask:

mode = current_mode & ~mask | flags & mask

set_console_mode(mode, output)

else:

restore = False

if restore:

atexit.register(set_console_mode, current_mode, output)

Example:

if __name__ == '__main__':

import os

import sys

import time

if sys.stderr is None:

os.close(2)

sys.stderr = open('stderr.txt', 'w', buffering=1)

print("%#06x, %#06x" % (get_console_mode(),

get_console_mode(output=True)))

flags = mask = ENABLE_EXTENDED_FLAGS | ENABLE_QUICK_EDIT_MODE

update_console_mode(flags, mask, restore=True)

print("%#06x, %#06x" % (get_console_mode(),

get_console_mode(output=True)))

time.sleep(10) # check console properties

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