Question

我想在我的Windows窗体.NET应用程序中监听以下系统范围事件中的事件：

注销锁定Windows Hibernate开始了睡眠开始系统已恢复

这些可能吗？

由于

Answer 1

您需要查看WMI（Windows媒体工具）。您需要为上述事件创建事件监视器。

http://msdn.microsoft.com/en-us/library/ms257340%28VS.80%29.aspx

有用的链接：

Get Log off event from system

如何为用户注销事件创建WMI事件监视器？

http://social.msdn.microsoft.com/Forums/en-US/netfxbcl/thread/0c1bded8-0cce-4260-bd28-4b4ffce0d27d

http://www.aspfree.com/c/a/VB.NET/WMI-Programming-with-Visual-BasicNET-Trapping-System-Events/1/

Answer 2

如上所述，您可以使用WMI捕获事件我正在添加一些我几年前写的代码示例（希望它仍然有效，因为它是在VS2010上用.Net3.5编写的）

这是一个收集所有活动的课程

Imports Microsoft.Win32
Imports System.Windows.Forms

Public Class PowerMessageFilter
    Implements IMessageFilter
    Const WM_POWERBROADCAST As Integer = &H218
    Const PBT_APMSUSPEND As Integer = &H4
    Const PBT_APMSTANDBY As Integer = &H5
    Const PBT_APMRESUMESUSPEND As Integer = &H7
    Const PBT_APMRESUMESTANDBY As Integer = &H8

   Protected Sub reportpowerchange(ByVal reason As Integer)
       Dim report As String = String.Empty
       Select Case (reason)
           Case PBT_APMSUSPEND
               report = "system is suspending operation "
               suspend_service()
               Exit Select
           Case PBT_APMSTANDBY
               report = "system is standing by "
               suspend_service()
               Exit Select
           Case PBT_APMRESUMESUSPEND
               report = "operation resuming after suspension."
               suspend_service()
               Exit Select
           Case PBT_APMRESUMESTANDBY
               report = "operation resuming after stand by."
               suspend_service()
           Exit Select
       End Select
   End Sub

   Public Function PreFilterMessage(ByRef m As Message) As Boolean Implements IMessageFilter.PreFilterMessage
       If WM_POWERBROADCAST = m.Msg Then
           Console.Out.WriteLine("Power Broadcast recieved.")
           Dim reason As Integer = m.WParam.ToInt32()
           reportpowerchange(reason)
       End If
       Return False
   End Function

   Private Sub suspend_service()
      ' Your suspend code
   End Sub
End Class

现在，对于监听器，我有一个在后台运行的Win32服务并完成了监听工作

Dim Filter As New PowerMessageFilter 'The Standby/Hibernation Filter catch;
Application.AddMessageFilter(Filter)

对不起，我没有参考我从中获取示例的网站，我想这可能来自上面的MSDN链接。

希望它可以提供帮助，
Liron

.NET WinForms - 如何监听系统LogOff，用户锁定，Hibernate启动和系统恢复的事件？

2 个答案: