Package com.sun.jna.platform.win32

Schnittstelle Winsvc.Handler

Alle Superschnittstellen:
AltCallingConvention, Callback, StdCall, StdCallLibrary.StdCallCallback
Umschließende Schnittstelle:
Winsvc
public static interface Winsvc.Handler extends StdCallLibrary.StdCallCallback
An application-defined callback function used with the RegisterServiceCtrlHandler function. A service program can use it as the control handler function of a particular service.

This function has been superseded by the Winsvc.HandlerEx control handler function used with the Advapi32.RegisterServiceCtrlHandlerEx(java.lang.String, com.sun.jna.platform.win32.Winsvc.HandlerEx, com.sun.jna.Pointer) function. A service can use either control handler, but the new control handler supports user-defined context data and additional extended control codes.

  • Methodendetails

    • callback

      void callback(int fdwControl)
      Parameter:
      fdwControl - [in] The control code. This parameter can be one of the following values.
      Control codeMeaning
      SERVICE_CONTROL_CONTINUE
      0x00000003      		Notifies a paused service that it should resume.
      SERVICE_CONTROL_INTERROGATE
      0x00000004      		Notifies a service that it should report its current status information to the service control manager.
      The handler should simply return NO_ERROR; the SCM is aware of the current state of the service.
      SERVICE_CONTROL_NETBINDADD
      0x00000007      		Notifies a network service that there is a new component for binding. The service should bind to the new component.
      Applications should use Plug and Play functionality instead.
      SERVICE_CONTROL_NETBINDDISABLE
      0x0000000A      		Notifies a network service that one of its bindings has been disabled. The service should reread its binding information and remove the binding.
      Applications should use Plug and Play functionality instead.
      SERVICE_CONTROL_NETBINDENABLE
      0x00000009      		Notifies a network service that a disabled binding has been enabled. The service should reread its binding information and add the new binding.
      Applications should use Plug and Play functionality instead.
      SERVICE_CONTROL_NETBINDREMOVE
      0x00000008      		Notifies a network service that a component for binding has been removed. The service should reread its binding information and unbind from the removed component.
      Applications should use Plug and Play functionality instead.
      SERVICE_CONTROL_PARAMCHANGE
      0x00000006      		Notifies a service that its startup parameters have changed. The service should reread its startup parameters.
      SERVICE_CONTROL_PAUSE
      0x00000002      		Notifies a service that it should pause.
      SERVICE_CONTROL_SHUTDOWN
      0x00000005      		Notifies a service that the system is shutting down so the service can perform cleanup tasks.
      If a service accepts this control code, it must stop after it performs its cleanup tasks and return NO_ERROR. After the SCM sends this control code, it will not send other control codes to the service.
      SERVICE_CONTROL_STOP
      0x00000001      		Notifies a service that it should stop.
      If a service accepts this control code, it must stop upon receipt and return NO_ERROR. After the SCM sends this control code, it does not send other control codes.
      Windows XP: If the service returns NO_ERROR and continues to run, it continues to receive control codes. This behavior changed starting with Windows Server 2003 and Windows XP with SP2.

      This parameter can also be a user-defined control code, as described in the following table.

      Control codeMeaning
      Range 128 to 255.The service defines the action associated with the control code.