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Overview |
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Group |
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Quick Info
Windows NT
| Yes
| Win95
| No
| Win32s
| No
| Import Library
| advapi32.lib
| Header File
| winsvc.h
| Unicode
| No
| Platform Notes
| None
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SetServiceStatus
The SetServiceStatus function updates the service control manager's status information for the
calling service.
BOOL SetServiceStatus(
SERVICE_STATUS_HANDLE hServiceStatus~,
| // service status handle
| LPSERVICE_STATUS lpServiceStatus
| // address of status structure
| );
|
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Parameters
hServiceStatus~
Specifies a handle to the service control manager's status information
structure for the current service. This handle is returned by the RegisterServiceCtrlHandler function.
lpServiceStatus
Points to the SERVICE_STATUS structure the contains the latest status information for the calling service.
Return Values
If the function succeeds, the return value is nonzero.
If the function fails, the return value is zero. To get extended error
information, call GetLastError.
Errors
The following error codes may be set by the service control manager. Other
error codes may be set by the registry functions that are called by the service
control manager.
Value
| Meaning
| ERROR_INVALID_HANDLE
| The specified handle is invalid.
| ERROR_INVALID_DATA
| The specified service status structure is invalid.
|
Remarks
A Win32 service's ServiceMain function first calls the RegisterServiceCtrlHandler function to get the service's SERVICE_STATUS_HANDLE. Then it immediately
calls the SetServiceStatus function to notify the service control manager of its SERVICE_START_PENDING
status.
When a Win32 service receives a control request, the service's Handler function must call this function, even if the service's status did not
change. A service can also use this function at any time and by any thread of the
service to notify the service control manager of status changes. Examples of such
unsolicited status updates include:
- Checkpoint updates that occur when the service is in transition from one state
to another (that is, SERVICE_START_PENDING).
- An update made necessary by the expected occurrence of a fatal error that
causes the service to stop.
A service can call this function only after it has called RegisterServiceCtrlHandler to get a service status handle.
See Also
Handler, RegisterServiceCtrlHandler, SERVICE_STATUS, ServiceMain, SetServiceBits
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