LogEntry Method (DEasyUAClientManagementEvents)

Raised for loggable entries originating in the OPC-UA client engine and the EasyUAClient component.

Syntax

Visual Basic
C#
C++/CLI

'Declaration
 
<DispIdAttribute(1001)>
Sub LogEntry( _
   ByVal sender0 As Object, _
   ByVal eventArgs As LogEntryEventArgs _
)

'Usage
 
Dim instance As DEasyUAClientManagementEvents
Dim sender0 As Object
Dim eventArgs As LogEntryEventArgs
 
instance.LogEntry(sender0, eventArgs)

[DispId(1001)]
void LogEntry( 
   object sender0,
   LogEntryEventArgs eventArgs
)

[DispId(1001)]
void LogEntry( 
   Object^ sender0,
   LogEntryEventArgs^ eventArgs
)

Parameters

sender0
eventArgs

Example

COM

C++
Free Pascal
Object Pascal
PHP
Visual Basic (VB 6.0)
VBScript

// This example demonstrates the loggable entries originating in the OPC-UA client engine and the EasyUAClient component.

#include "stdafx.h"    // Includes "QuickOpc.h", and other commonly used files
#include <atlcom.h>
#include "LogEntry.h"

namespace _EasyUAClientManagement
{
    // CEasyUAClientManagementEvents

    class CEasyUAClientManagementEvents : public IDispEventImpl<1, CEasyUAClientManagementEvents>
    {
    public:
    BEGIN_SINK_MAP(CEasyUAClientManagementEvents)
        // Event handlers must have the __stdcall calling convention
        SINK_ENTRY(1, 1 /*DISPID_EASYUACLIENTManagementEVENTS_LOGENTRY*/, &CEasyUAClientManagementEvents::LogEntry)
    END_SINK_MAP()

    public:
        // Event handler for the LogEntry event. It simply prints out the event.
        STDMETHOD(LogEntry)(VARIANT varSender, _LogEntryEventArgs* pEventArgs)
        {
            _tprintf(_T("%s\n"), (LPCTSTR)CW2CT(pEventArgs->ToString));
            return S_OK;
        }
    };



    void LogEntry::Main()
    {
        // Initialize the COM library
        CoInitializeEx(NULL, COINIT_MULTITHREADED);
        {
            // The management object allows access to static behavior - here, the shared LogEntry event.
            _EasyUAClientManagementPtr ClientManagementPtr(__uuidof(EasyUAClientManagement));

            // Hook events
            CEasyUAClientManagementEvents* pClientManagementEvents = new CEasyUAClientManagementEvents();
            AtlGetObjectSourceInterface(ClientManagementPtr, &pClientManagementEvents->m_libid, 
                &pClientManagementEvents->m_iid, 
                &pClientManagementEvents->m_wMajorVerNum, &pClientManagementEvents->m_wMinorVerNum);
            pClientManagementEvents->m_iid = _uuidof(DEasyUAClientManagementEvents);
            pClientManagementEvents->DispEventAdvise(ClientManagementPtr, &pClientManagementEvents->m_iid);

            // Do something - invoke an OPC read, to trigger some loggable entries.
            _EasyUAClientPtr ClientPtr(__uuidof(EasyUAClient));
            ClientPtr->ReadValue(
                //L"http://opcua.demo-this.com:51211/UA/SampleServer", 
                L"opc.tcp://opcua.demo-this.com:51210/UA/SampleServer",
                L"nsu=http://test.org/UA/Data/ ;i=10853");

            _tprintf(_T("Processing log entry events for 1 minute...\n"));
            Sleep(60*1000);

            // Unhook events
            pClientManagementEvents->DispEventUnadvise(ClientManagementPtr, &pClientManagementEvents->m_iid);
        }
         // Release all interface pointers BEFORE calling CoUninitialize()
        CoUninitialize();
    }
}

// This example demonstrates the loggable entries originating in the OPC-UA
// client engine and the EasyUAClient component.

type
  TClientManagementEventHandlers = class
    procedure OnLogEntry(
      Sender: TObject;
      sender0: OleVariant;
      eventArgs: _LogEntryEventArgs);
  end;

// Event handler for the LogEntry event. It simply prints out the event.
procedure TClientManagementEventHandlers.OnLogEntry(
  Sender: TObject;
  sender0: OleVariant;
  eventArgs: _LogEntryEventArgs);
begin
    WriteLn(eventArgs.ToString);
end;

class procedure LogEntry.Main;
var
  Client: EasyUAClient;
  EvsClientManagement: TEvsEasyUAClientManagement;
  ClientManagement: EasyUAClientManagement;
  ClientManagementEventHandlers: TClientManagementEventHandlers;
  Value: OleVariant;
begin
  // The Management object allows access to static behavior - here, the
  // shared LogEntry event.
  EvsClientManagement := TEvsEasyUAClientManagement.Create(nil);
  ClientManagement := EvsClientManagement.ComServer;
  ClientManagementEventHandlers := TClientManagementEventHandlers.Create;
  EvsClientManagement.OnLogEntry := @ClientManagementEventHandlers.OnLogEntry;

  // Do something - invoke an OPC read, to trigger some loggable entries.
  Client := CoEasyUAClient.Create;
  Value := Client.ReadValue(
    //'http://opcua.demo-this.com:51211/UA/SampleServer',
    'opc.tcp://opcua.demo-this.com:51210/UA/SampleServer',
    'nsu=http://test.org/UA/Data/ ;i=10853');

  WriteLn('Processing log entry events for 1 minute...');
  PumpSleep(60*1000);
end;

// This example demonstrates the loggable entries originating in the OPC-UA
// client engine and the EasyUAClient component.

type
  TClientManagementEventHandlers130 = class
    procedure OnLogEntry(
      ASender: TObject;
      sender: OleVariant;
      const eventArgs: _LogEntryEventArgs);
  end;

// Event handler for the LogEntry event. It simply prints out the event.
procedure TClientManagementEventHandlers130.OnLogEntry(
  ASender: TObject;
  sender: OleVariant;
  const eventArgs: _LogEntryEventArgs);
begin
    WriteLn(eventArgs.ToString);
end;

class procedure LogEntry.Main;
var
  Client: OpcLabs_EasyOpcUA_TLB._EasyUAClient;
  ClientManagement: TEasyUAClientManagement;
  ClientManagementEventHandlers: TClientManagementEventHandlers130;
  Value: OleVariant;
begin
  // The management object allows access to static behavior - here, the
  // shared LogEntry event.
  ClientManagement := TEasyUAClientManagement.Create(nil);
  ClientManagementEventHandlers := TClientManagementEventHandlers130.Create;
  ClientManagement.OnLogEntry := ClientManagementEventHandlers.OnLogEntry;
  ClientManagement.Connect;

  // Do something - invoke an OPC read, to trigger some loggable entries.
  Client := CoEasyUAClient.Create;
  try
    Value := Client.ReadValue(
      //'http://opcua.demo-this.com:51211/UA/SampleServer',
      //'https://opcua.demo-this.com:51212/UA/SampleServer/',
      'opc.tcp://opcua.demo-this.com:51210/UA/SampleServer',
      'nsu=http://test.org/UA/Data/ ;i=10853');
  except
    on E: EOleException do
    begin
      WriteLn(Format('*** Failure: %s', [E.GetBaseException.Message]));
      //Exit;
    end;
  end;

  WriteLn('Processing log entry events for 1 minute...');
  PumpSleep(60*1000);

  WriteLn('Finished.');
  FreeAndNil(ClientManagement);
  FreeAndNil(ClientManagementEventHandlers);
end;

// This example demonstrates the loggable entries originating in the OPC-UA client engine and the EasyUAClient component.

class ClientManagementEvents {
    // Event handler for the LogEntry event. It simply prints out the event.
    function LogEntry($Sender, $E)
    {
    printf("%s\n", $E);
    }
}



// The management object allows access to static behavior - here, the shared LogEntry event.
$ClientManagement = new COM("OpcLabs.EasyOpc.UA.EasyUAClientManagement");
$ClientManagementEvents = new ClientManagementEvents();
com_event_sink($ClientManagement, $ClientManagementEvents, "DEasyUAClientManagementEvents");

// Do something - invoke an OPC read, to trigger some loggable entries.
$Client = new COM("OpcLabs.EasyOpc.UA.EasyUAClient");
try
{
    $value = $Client->ReadValue(
        //"http://opcua.demo-this.com:51211/UA/SampleServer", 
        "opc.tcp://opcua.demo-this.com:51210/UA/SampleServer", 
        "nsu=http://test.org/UA/Data/ ;i=10853");
}
catch (com_exception $e)
{
    printf("*** Failure: %s\n", $e->getMessage());
    Exit();
}


printf("Processing log entry events for 1 minute...");
$startTime = time(); do { com_message_pump(1000); } while (time() < $startTime + 60);

Rem This example demonstrates the loggable entries originating in the OPC-UA client engine and the EasyUAClient component.

' The management object allows access to static behavior - here, the shared LogEntry event.
'Public WithEvents ClientManagement1 As EasyUAClientManagement

Private Sub LogEntry_Main_Command_Click()
    OutputText = ""
    
    Set ClientManagement1 = New EasyUAClientManagement
    
    ' Do something - invoke an OPC read, to trigger some loggable entries.
    Dim client As New EasyUAClient
    On Error Resume Next
    Dim value As Variant
    value = client.ReadValue("opc.tcp://opcua.demo-this.com:51210/UA/SampleServer", "nsu=http://test.org/UA/Data/ ;i=10853")
    If Err.Number <> 0 Then
        OutputText = OutputText & "*** Failure: " & Err.Source & ": " & Err.Description & vbCrLf
        Exit Sub
    End If
    On Error GoTo 0

    OutputText = OutputText & "Processing log entry events for 1 minute..." & vbCrLf
    Pause 60000
    
    Set ClientManagement1 = Nothing
    OutputText = OutputText & "Finished..." & vbCrLf
End Sub

' Event handler for the LogEntry event. It simply prints out the event.
Private Sub ClientManagement1_LogEntry(ByVal sender As Variant, ByVal eventArgs As OpcLabs_BaseLib.LogEntryEventArgs)
    OutputText = OutputText & eventArgs & vbCrLf
End Sub

Rem This example demonstrates the loggable entries originating in the OPC-UA client engine and the EasyUAClient component.

Option Explicit

' The management object allows access to static behavior - here, the shared LogEntry event.
Dim ClientManagement: Set ClientManagement = CreateObject("OpcLabs.EasyOpc.UA.EasyUAClientManagement")
WScript.ConnectObject ClientManagement, "ClientManagement_"

' Do something - invoke an OPC read, to trigger some loggable entries.
Dim Client: Set Client = CreateObject("OpcLabs.EasyOpc.UA.EasyUAClient")
On Error Resume Next
Dim value: value = Client.ReadValue("opc.tcp://opcua.demo-this.com:51210/UA/SampleServer", "nsu=http://test.org/UA/Data/ ;i=10853")
If Err.Number <> 0 Then
    WScript.Echo "*** Failure: " & Err.Source & ": " & Err.Description
    WScript.Quit
End If
On Error Goto 0

WScript.Echo "Processing log entry events for 1 minute..."
WScript.Sleep 60*1000



' Event handler for the LogEntry event. It simply prints out the event.
Sub ClientManagement_LogEntry(Sender, e)
    WScript.Echo e
End Sub

C++
Free Pascal
Object Pascal
PHP
Visual Basic (VB 6.0)
VBScript

// This example demonstrates the loggable entries originating in the OPC-UA client engine and the EasyUAClient component.

#include "stdafx.h"    // Includes "QuickOpc.h", and other commonly used files
#include <atlcom.h>
#include "LogEntry.h"

namespace _EasyUAClientManagement
{
    // CEasyUAClientManagementEvents

    class CEasyUAClientManagementEvents : public IDispEventImpl<1, CEasyUAClientManagementEvents>
    {
    public:
    BEGIN_SINK_MAP(CEasyUAClientManagementEvents)
        // Event handlers must have the __stdcall calling convention
        SINK_ENTRY(1, 1 /*DISPID_EASYUACLIENTManagementEVENTS_LOGENTRY*/, &CEasyUAClientManagementEvents::LogEntry)
    END_SINK_MAP()

    public:
        // Event handler for the LogEntry event. It simply prints out the event.
        STDMETHOD(LogEntry)(VARIANT varSender, _LogEntryEventArgs* pEventArgs)
        {
            _tprintf(_T("%s\n"), (LPCTSTR)CW2CT(pEventArgs->ToString));
            return S_OK;
        }
    };



    void LogEntry::Main()
    {
        // Initialize the COM library
        CoInitializeEx(NULL, COINIT_MULTITHREADED);
        {
            // The management object allows access to static behavior - here, the shared LogEntry event.
            _EasyUAClientManagementPtr ClientManagementPtr(__uuidof(EasyUAClientManagement));

            // Hook events
            CEasyUAClientManagementEvents* pClientManagementEvents = new CEasyUAClientManagementEvents();
            AtlGetObjectSourceInterface(ClientManagementPtr, &pClientManagementEvents->m_libid, 
                &pClientManagementEvents->m_iid, 
                &pClientManagementEvents->m_wMajorVerNum, &pClientManagementEvents->m_wMinorVerNum);
            pClientManagementEvents->m_iid = _uuidof(DEasyUAClientManagementEvents);
            pClientManagementEvents->DispEventAdvise(ClientManagementPtr, &pClientManagementEvents->m_iid);

            // Do something - invoke an OPC read, to trigger some loggable entries.
            _EasyUAClientPtr ClientPtr(__uuidof(EasyUAClient));
            ClientPtr->ReadValue(
                //L"http://opcua.demo-this.com:51211/UA/SampleServer", 
                L"opc.tcp://opcua.demo-this.com:51210/UA/SampleServer",
                L"nsu=http://test.org/UA/Data/ ;i=10853");

            _tprintf(_T("Processing log entry events for 1 minute...\n"));
            Sleep(60*1000);

            // Unhook events
            pClientManagementEvents->DispEventUnadvise(ClientManagementPtr, &pClientManagementEvents->m_iid);
        }
         // Release all interface pointers BEFORE calling CoUninitialize()
        CoUninitialize();
    }
}

// This example demonstrates the loggable entries originating in the OPC-UA
// client engine and the EasyUAClient component.

type
  TClientManagementEventHandlers = class
    procedure OnLogEntry(
      Sender: TObject;
      sender0: OleVariant;
      eventArgs: _LogEntryEventArgs);
  end;

// Event handler for the LogEntry event. It simply prints out the event.
procedure TClientManagementEventHandlers.OnLogEntry(
  Sender: TObject;
  sender0: OleVariant;
  eventArgs: _LogEntryEventArgs);
begin
    WriteLn(eventArgs.ToString);
end;

class procedure LogEntry.Main;
var
  Client: EasyUAClient;
  EvsClientManagement: TEvsEasyUAClientManagement;
  ClientManagement: EasyUAClientManagement;
  ClientManagementEventHandlers: TClientManagementEventHandlers;
  Value: OleVariant;
begin
  // The Management object allows access to static behavior - here, the
  // shared LogEntry event.
  EvsClientManagement := TEvsEasyUAClientManagement.Create(nil);
  ClientManagement := EvsClientManagement.ComServer;
  ClientManagementEventHandlers := TClientManagementEventHandlers.Create;
  EvsClientManagement.OnLogEntry := @ClientManagementEventHandlers.OnLogEntry;

  // Do something - invoke an OPC read, to trigger some loggable entries.
  Client := CoEasyUAClient.Create;
  Value := Client.ReadValue(
    //'http://opcua.demo-this.com:51211/UA/SampleServer',
    'opc.tcp://opcua.demo-this.com:51210/UA/SampleServer',
    'nsu=http://test.org/UA/Data/ ;i=10853');

  WriteLn('Processing log entry events for 1 minute...');
  PumpSleep(60*1000);
end;

// This example demonstrates the loggable entries originating in the OPC-UA
// client engine and the EasyUAClient component.

type
  TClientManagementEventHandlers130 = class
    procedure OnLogEntry(
      ASender: TObject;
      sender: OleVariant;
      const eventArgs: _LogEntryEventArgs);
  end;

// Event handler for the LogEntry event. It simply prints out the event.
procedure TClientManagementEventHandlers130.OnLogEntry(
  ASender: TObject;
  sender: OleVariant;
  const eventArgs: _LogEntryEventArgs);
begin
    WriteLn(eventArgs.ToString);
end;

class procedure LogEntry.Main;
var
  Client: OpcLabs_EasyOpcUA_TLB._EasyUAClient;
  ClientManagement: TEasyUAClientManagement;
  ClientManagementEventHandlers: TClientManagementEventHandlers130;
  Value: OleVariant;
begin
  // The management object allows access to static behavior - here, the
  // shared LogEntry event.
  ClientManagement := TEasyUAClientManagement.Create(nil);
  ClientManagementEventHandlers := TClientManagementEventHandlers130.Create;
  ClientManagement.OnLogEntry := ClientManagementEventHandlers.OnLogEntry;
  ClientManagement.Connect;

  // Do something - invoke an OPC read, to trigger some loggable entries.
  Client := CoEasyUAClient.Create;
  try
    Value := Client.ReadValue(
      //'http://opcua.demo-this.com:51211/UA/SampleServer',
      //'https://opcua.demo-this.com:51212/UA/SampleServer/',
      'opc.tcp://opcua.demo-this.com:51210/UA/SampleServer',
      'nsu=http://test.org/UA/Data/ ;i=10853');
  except
    on E: EOleException do
    begin
      WriteLn(Format('*** Failure: %s', [E.GetBaseException.Message]));
      //Exit;
    end;
  end;

  WriteLn('Processing log entry events for 1 minute...');
  PumpSleep(60*1000);

  WriteLn('Finished.');
  FreeAndNil(ClientManagement);
  FreeAndNil(ClientManagementEventHandlers);
end;

// This example demonstrates the loggable entries originating in the OPC-UA client engine and the EasyUAClient component.

class ClientManagementEvents {
    // Event handler for the LogEntry event. It simply prints out the event.
    function LogEntry($Sender, $E)
    {
    printf("%s\n", $E);
    }
}



// The management object allows access to static behavior - here, the shared LogEntry event.
$ClientManagement = new COM("OpcLabs.EasyOpc.UA.EasyUAClientManagement");
$ClientManagementEvents = new ClientManagementEvents();
com_event_sink($ClientManagement, $ClientManagementEvents, "DEasyUAClientManagementEvents");

// Do something - invoke an OPC read, to trigger some loggable entries.
$Client = new COM("OpcLabs.EasyOpc.UA.EasyUAClient");
try
{
    $value = $Client->ReadValue(
        //"http://opcua.demo-this.com:51211/UA/SampleServer", 
        "opc.tcp://opcua.demo-this.com:51210/UA/SampleServer", 
        "nsu=http://test.org/UA/Data/ ;i=10853");
}
catch (com_exception $e)
{
    printf("*** Failure: %s\n", $e->getMessage());
    Exit();
}


printf("Processing log entry events for 1 minute...");
$startTime = time(); do { com_message_pump(1000); } while (time() < $startTime + 60);

Rem This example demonstrates the loggable entries originating in the OPC-UA client engine and the EasyUAClient component.

' The management object allows access to static behavior - here, the shared LogEntry event.
'Public WithEvents ClientManagement1 As EasyUAClientManagement

Private Sub LogEntry_Main_Command_Click()
    OutputText = ""
    
    Set ClientManagement1 = New EasyUAClientManagement
    
    ' Do something - invoke an OPC read, to trigger some loggable entries.
    Dim client As New EasyUAClient
    On Error Resume Next
    Dim value As Variant
    value = client.ReadValue("opc.tcp://opcua.demo-this.com:51210/UA/SampleServer", "nsu=http://test.org/UA/Data/ ;i=10853")
    If Err.Number <> 0 Then
        OutputText = OutputText & "*** Failure: " & Err.Source & ": " & Err.Description & vbCrLf
        Exit Sub
    End If
    On Error GoTo 0

    OutputText = OutputText & "Processing log entry events for 1 minute..." & vbCrLf
    Pause 60000
    
    Set ClientManagement1 = Nothing
    OutputText = OutputText & "Finished..." & vbCrLf
End Sub

' Event handler for the LogEntry event. It simply prints out the event.
Private Sub ClientManagement1_LogEntry(ByVal sender As Variant, ByVal eventArgs As OpcLabs_BaseLib.LogEntryEventArgs)
    OutputText = OutputText & eventArgs & vbCrLf
End Sub

Rem This example demonstrates the loggable entries originating in the OPC-UA client engine and the EasyUAClient component.

Option Explicit

' The management object allows access to static behavior - here, the shared LogEntry event.
Dim ClientManagement: Set ClientManagement = CreateObject("OpcLabs.EasyOpc.UA.EasyUAClientManagement")
WScript.ConnectObject ClientManagement, "ClientManagement_"

' Do something - invoke an OPC read, to trigger some loggable entries.
Dim Client: Set Client = CreateObject("OpcLabs.EasyOpc.UA.EasyUAClient")
On Error Resume Next
Dim value: value = Client.ReadValue("opc.tcp://opcua.demo-this.com:51210/UA/SampleServer", "nsu=http://test.org/UA/Data/ ;i=10853")
If Err.Number <> 0 Then
    WScript.Echo "*** Failure: " & Err.Source & ": " & Err.Description
    WScript.Quit
End If
On Error Goto 0

WScript.Echo "Processing log entry events for 1 minute..."
WScript.Sleep 60*1000



' Event handler for the LogEntry event. It simply prints out the event.
Sub ClientManagement_LogEntry(Sender, e)
    WScript.Echo e
End Sub

Requirements

Target Platforms: .NET Framework: Windows 10 (selected versions), Windows 11 (selected versions), Windows Server 2016, Windows Server 2022; .NET: Linux, macOS, Microsoft Windows

Reference

DEasyUAClientManagementEvents Interface
DEasyUAClientManagementEvents Members

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