python 如何监听U盘插拔事件

Posted 2023-04-15

windows XP平台下, 当U盘插入系统或者从系统中拔出时,如何通过Python监听U盘插拔事件,谢谢!!

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 ()追问

您好,这个程序我在Pycharm中执行, 插入U盘后,弹出错误框.

追答

不可能

参考技术A watchdog 包

electron 监听U盘插拔事件,并获得U盘路径

思路，用electron监听窗口事件，在监听的回调里，运行C#代码，获取当前电脑的U盘路径，获取到就返回路径，获取不到就返回0

在这里卡了好久，分享出来让大家参考

 

(环境没必要和我的一样)

我的环境：node 10.2.0

　　　　　electron 　7.3.1

　依赖： "electron-edge-js": "^12.14.2"

 

代码 ：

hookWindowMessage electron 官方方法:链接https://www.electronjs.org/docs/api/browser-window#winhookwindowmessagemessage-callback-windows

mainWindow.hookWindowMessage(0x0219, (wParam, lParam) => {

//不要以为下面代码中的 /**/是注释。在edge中想要执行C#代码 就需要 /**/包括着
　　var edge = require("electron-edge-js");
　　const findUSB=edge.func(function () {/*
　　　　using System.IO;
　　　　async (input) => {
　　　　　　DriveInfo[] allDrives = DriveInfo.GetDrives();
　　　　　　foreach (DriveInfo d in allDrives)
　　　　　　{
　　　　　　　　if (d.DriveType == DriveType.Removable)
　　　　　　　　{
　　　　　　　　return d.Name;
　　　　　　　　}
　　　　　　}
　　　　　　return "0";
　　　　　　}
　　　　*/});

　
　　findUSB(‘0‘,function (error, result) {
　　　　if (error) throw error;
　　　　console.log(result);
　　　　if(result!=="0"){
　　　　　　console.log(fs.readdirSync(result))
　　　　}
　　});

})