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Visual Basic / NT Samples / Event Log in NT

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Added: 2002-08-19

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Event Log in NT

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Declarations
Highlight AllOption Explicit Declare Function RegisterEventSource Lib "advapi32.dll" Alias _ "RegisterEventSourceA" (ByVal lpUNCServerName As String, _ ByVal lpSourceName As String) As Long Declare Function DeregisterEventSource Lib "advapi32.dll" ( _ ByVal hEventLog As Long) As Long Declare Function ReportEvent Lib "advapi32.dll" Alias _ "ReportEventA" (ByVal hEventLog As Long, ByVal wType As Integer, _ ByVal wCategory As Integer, ByVal dwEventID As Long, _ ByVal lpUserSid As Any, ByVal wNumStrings As Integer, _ ByVal dwDataSize As Long, plpStrings As Long, _ lpRawData As Any) As Boolean Declare Function GetLastError Lib "kernel32" () As Long Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" ( _ hpvDest As Any, hpvSource As Any, _ ByVal cbCopy As Long) Declare Function GlobalAlloc Lib "kernel32" ( _ ByVal wFlags As Long, _ ByVal dwBytes As Long) As Long Declare Function GlobalFree Lib "kernel32" ( _ ByVal hMem As Long) As Long Public Const EVENTLOG_SUCCESS = 0 Public Const EVENTLOG_ERROR_TYPE = 1 Public Const EVENTLOG_WARNING_TYPE = 2 Public Const EVENTLOG_INFORMATION_TYPE = 4 Public Const EVENTLOG_AUDIT_SUCCESS = 8 Public Const EVENTLOG_AUDIT_FAILURE = 10
Code
Highlight AllPublic Sub LogNTEvent(sString As String, iLogType As Integer, _ iEventID As Long) Dim bRC As Boolean Dim iNumStrings As Integer Dim hEventLog As Long Dim hMsgs As Long Dim cbStringSize As Long hEventLog = RegisterEventSource("", App.Title) cbStringSize = Len(sString) + 1 hMsgs = GlobalAlloc(&H40, cbStringSize) CopyMemory ByVal hMsgs, ByVal sString, cbStringSize iNumStrings = 1 If ReportEvent(hEventLog, _ iLogType, 0, _ iEventID, 0&, _ iNumStrings, cbStringSize, _ hMsgs, hMsgs) = 0 Then MsgBox GetLastError() End If Call GlobalFree(hMsgs) DeregisterEventSource (hEventLog) End Sub Sub Main() Call LogNTEvent("Information from " & App.EXEName, _ EVENTLOG_INFORMATION_TYPE, 1001) Call LogNTEvent("Warning from " & App.EXEName, _ EVENTLOG_WARNING_TYPE, 1002) Call LogNTEvent("Error from " & App.EXEName, _ EVENTLOG_ERROR_TYPE, 1003) MsgBox "Done" End Sub

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