问题描述
我编写了一些 powershell，它允许我利用键盘媒体键的功能来控制当前正在运行的任何音乐.
I've written some powershell which allows me to harness the power of the keyboard media keys to control any music that's currently running.
我想要做的是在计算机被锁定的情况下运行脚本.所以我可以暂停/停止音乐.然后一旦机器解锁，恢复音乐.很酷吧?！
What I want to be able to do is run the script on the event of the computer being locked. So I can pause/stop the music. Then once the machine is unlocked, resume the music. Cool huh?!
我的前 2 次尝试是:
My first 2 attempts have been:
Register-wmievent –query "Select * from __instancecreationevent within 1 where TargetInstance isa 'Win32_NTLogEvent' And TargetInstance.EventCode = 4800" -Action {write-host "Pausing`r`n"; set-playpausetrack}
这是解锁事件
Register-wmievent –query "Select * from __instancecreationevent within 1 where TargetInstance isa 'Win32_NTLogEvent' And TargetInstance.EventCode = 4801" -Action {write-host "Resuming`r`n"; set-playpausetrack}
不幸的是，我认为锁定事件触发得太晚了，此时操作系统出于安全原因停止了后台交互.当我解锁计算机时，它会同时触发锁定和解锁事件.
Unfortunately, I think the lock event fires too late, at which point background interaction is halted by the OS for security reasons. When I unlock the computer it fires both the locked and unlocked events.
与上述问题类似，但它也在不同的上下文中运行，因此无法正常工作.
Similar issue to above, but it also runs in a different context so doesn't work properly.
有谁知道如何在系统实际锁定之前运行脚本?IE.有没有我可以监视之前触发的事件?
Does anyone know how to get a script to run before the system actually locks? I.e. is there an event I can watch for which triggers before?
推荐答案
这似乎有效
PS> $sysevent = [microsoft.win32.systemevents]
PS> $sysevent
IsPublic IsSerial Name BaseType
-------- -------- ---- --------
True False SystemEvents System.Object
PS> Register-ObjectEvent -InputObject $sysevent -EventName "SessionSwitch" -Action {[console]::Beep()}
Id Name State HasMoreData Location Command
-- ---- ----- ----------- -------- -------
1 fa48b95f-299... NotStarted False [console]::Beep()
您可以找到 Microsoft 文档中的 SytemEvent 列表.
DisplaySettingsChanged Occurs when the user changes the display settings.
DisplaySettingsChanging Occurs when the display settings are changing.
EventsThreadShutdown Occurs before the thread that listens for system events is terminated.
InstalledFontsChanged Occurs when the user adds fonts to or removes fonts from the system.
LowMemory Occurs when the system is running out of available RAM.
PaletteChanged Occurs when the user switches to an application that uses a different palette.
PowerModeChanged Occurs when the user suspends or resumes the system.
SessionEnded Occurs when the user is logging off or shutting down the system.
SessionEnding Occurs when the user is trying to log off or shut down the system.
SessionSwitch Occurs when the currently logged-in user has changed.
TimeChanged Occurs when the user changes the time on the system clock.
TimerElapsed Occurs when a windows timer interval has expired.
UserPreferenceChanged Occurs when a user preference has changed.
UserPreferenceChanging Occurs when a user preference is changing.
取消注册事件
PS> Unregister-Event -SubscriptionId 1
如果要能够区分Lock和Unlock，SessionSwitchEventHandler接收两个参数
If you want to be able to distinguish Lock and Unlock the SessionSwitchEventHandler receives two parameters
- 事件的来源.
- SessionSwitchEventArgs 指示会话更改事件的类型.
SessionSwitchEventArgs 拥有一个属性 Reason，它是一个枚举 SessionSwitchReason 值是:
The SessionSwitchEventArgs own one propertie Reason which is an enum SessionSwitchReason values are :
ConsoleConnect A session has been connected from the console.
ConsoleDisconnect A session has been disconnected from the console.
RemoteConnect A session has been connected from a remote connection.
RemoteDisconnect A session has been disconnected from a remote connection.
SessionLogon A user has logged on to a session.
SessionLogoff A user has logged off from a session.
SessionLock A session has been locked.
SessionUnlock A session has been unlocked.
SessionRemoteControl A session has changed its status to or from remote controlled mode.
示例:
PS> Register-ObjectEvent -InputObject $sysevent -EventName "SessionSwitch" -Action {[console]::Beep();Write-Host ($args[1]).Reason}
Id Name State HasMoreData Location Command
-- ---- ----- ----------- -------- -------
9 20e6ecd4-fc0... NotStarted False [console]::Beep();fore...
PS >
SessionLock
SessionUnlock
如果你想订阅一个事件列表，你可以使用 Get-EventSubscriber :
If you want a list of events suscribed you can use Get-EventSubscriber :
SubscriptionId : 5
SourceObject : Microsoft.Win32.SystemEvents
EventName : SessionSwitch
SourceIdentifier : 96fbabe4-518a-47b5-8a3f-bb89c68f7f39
Action : System.Management.Automation.PSEventJob
HandlerDelegate :
SupportEvent : False
ForwardEvent : False
这篇关于在 Windows 上锁定计算机之前运行脚本的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！