python 如何监听U盘插拔事件

可以这么做，参考：
import win32api, win32con, win32gui
from ctypes import *

#
# Device change events (WM_DEVICECHANGE wParam)
#
DBT_DEVICEARRIVAL = 0x8000
DBT_DEVICEQUERYREMOVE = 0x8001
DBT_DEVICEQUERYREMOVEFAILED = 0x8002
DBT_DEVICEMOVEPENDING = 0x8003
DBT_DEVICEREMOVECOMPLETE = 0x8004
DBT_DEVICETYPESSPECIFIC = 0x8005
DBT_CONFIGCHANGED = 0x0018

#
# type of device in DEV_BROADCAST_HDR
#
DBT_DEVTYP_OEM = 0x00000000
DBT_DEVTYP_DEVNODE = 0x00000001
DBT_DEVTYP_VOLUME = 0x00000002
DBT_DEVTYPE_PORT = 0x00000003
DBT_DEVTYPE_NET = 0x00000004

#
# media types in DBT_DEVTYP_VOLUME
#
DBTF_MEDIA = 0x0001
DBTF_NET = 0x0002

WORD = c_ushort
DWORD = c_ulong

class DEV_BROADCAST_HDR (Structure):
_fields_ = [
("dbch_size", DWORD),
("dbch_devicetype", DWORD),
("dbch_reserved", DWORD)
]

class DEV_BROADCAST_VOLUME (Structure):
_fields_ = [
("dbcv_size", DWORD),
("dbcv_devicetype", DWORD),
("dbcv_reserved", DWORD),
("dbcv_unitmask", DWORD),
("dbcv_flags", WORD)
]

def drive_from_mask (mask):
n_drive = 0
while 1:
if (mask & (2 ** n_drive)): return n_drive
else: n_drive += 1

class Notification:

def __init__(self):
message_map = {
win32con.WM_DEVICECHANGE : self.onDeviceChange
}

wc = win32gui.WNDCLASS ()
hinst = wc.hInstance = win32api.GetModuleHandle (None)
wc.lpszClassName = "DeviceChangeDemo"
wc.style = win32con.CS_VREDRAW | win32con.CS_HREDRAW;
wc.hCursor = win32gui.LoadCursor (0, win32con.IDC_ARROW)
wc.hbrBackground = win32con.COLOR_WINDOW
wc.lpfnWndProc = message_map
classAtom = win32gui.RegisterClass (wc)
style = win32con.WS_OVERLAPPED | win32con.WS_SYSMENU
self.hwnd = win32gui.CreateWindow (
classAtom,
"Device Change Demo",
style,
0, 0,
win32con.CW_USEDEFAULT, win32con.CW_USEDEFAULT,
0, 0,
hinst, None
)

def onDeviceChange (self, hwnd, msg, wparam, lparam):
#
# WM_DEVICECHANGE:
# wParam - type of change: arrival, removal etc.
# lParam - what's changed?
# if it's a volume then...
# lParam - what's changed more exactly
#
dev_broadcast_hdr = DEV_BROADCAST_HDR.from_address (lparam)

if wparam == DBT_DEVICEARRIVAL:
print "Something's arrived"

if dev_broadcast_hdr.dbch_devicetype == DBT_DEVTYP_VOLUME:
print "It's a volume!"

dev_broadcast_volume = DEV_BROADCAST_VOLUME.from_address (lparam)
if dev_broadcast_volume.dbcv_flags &; DBTF_MEDIA:
print "with some media"
drive_letter = drive_from_mask (dev_broadcast_volume.dbcv_unitmask)
print "in drive", chr (ord ("A") + drive_letter)

return 1
if __name__=='__main__':
w = Notification ()
win32gui.PumpMessages ()

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