OnShutdown
This event method is called when the operating system shuts down. This could be used by DCOM clients to release the connection.
HRESULTOnShutdown([in] VARIANT
shutdownParm);
Parameters
shutdownParm
[in] A variant that describes the shutdown reason (in our case always REASON_SYSSHUTDOWN).
The items of the array are explained in the following table.
Requirements
index | TcEventHeader item | Description |
|---|---|---|
0 | REASON_INVALID | Invalid |
1 | REASON_TCSTOP | The TwinCAT system shuts down |
2 | REASON_SYSSHUTDOWN | The operating systems shuts down |
S_OK
Function was successfully called
Visual Basic sample code
Option Explicit
Dim WithEvents evtLogger As TCEVENTLOGGERLib.TcEventLog
' form load
Private Sub Form_Load()
' get the one and only event logger
Set evtLogger = New TcEventLog
End Sub
' event method
Private Sub evtLogger_OnShutdown(ByVal shutdownParm As Variant)
Debug.Print shutdownParm
End Sub