Package com.sun.jna.platform.win32

Interface Winsvc.Handler

All Superinterfaces:

AltCallingConvention, Callback, StdCall, StdCallLibrary.StdCallCallback

Enclosing interface:

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This function has been superseded by the Winsvc.HandlerEx control handler function used with the Advapi32.RegisterServiceCtrlHandlerEx(java.lang.String,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.

Nested Class Summary

Nested classes/interfaces inherited from interface com.sun.jna.Callback

Callback.UncaughtExceptionHandler

Field Summary

Fields inherited from interface com.sun.jna.Callback

FORBIDDEN_NAMES, METHOD_NAME

Method Summary

Modifier and Type	Method	Description
void	callback(int fdwControl)

Method Detail

callback

void callback(int fdwControl)

Parameters:

fdwControl - [in] The control code. This parameter can be one of the following values.

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