function connects the main thread of a service process to the service control
manager, which causes the thread to be the service control dispatcher thread
for the calling process.
| LPSERVICE_TABLE_ENTRY lpServiceStartTable
||// address of service table
Points to an array of SERVICE_TABLE_ENTRY
structures containing one entry for each service that can execute in the
calling process. The members of the last entry in the table must have NULL values
to designate the end of the table.
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
The following error code can be set by the service control manager. Other
error codes can be set by the registry functions that are called by the service
||The specified dispatch table contains entries that are not in the proper
When the service control manager starts a service process, it waits for the
process to call the StartServiceCtrlDispatcher
function. The main thread of a service process should make this call as soon
as possible after it starts up. If StartServiceCtrlDispatcher
succeeds, it connects the calling thread to the service control manager and
does not return until all running services in the process have terminated. The
service control manager uses this connection to send control and service start
requests to the main thread of the service process. The main thread acts as a
dispatcher by invoking the appropriate Handler
function to handle control requests, or by creating a new thread to execute
the appropriate ServiceMain
function when a new service is started.
parameter contains an entry for each service that can run in the calling
process. Each entry specifies the ServiceMain
function for that service. For SERVICE_WIN32_SHARE_PROCESS services, each
entry must contain the name of a service. This name is the service name that was
specified by the CreateService
function when the service was installed. For SERVICE_WIN32_OWN_PROCESS
services, the service name in the table entry is ignored.
If a service runs in its own process, the main thread of the service process
should immediately call StartServiceCtrlDispatcher
. All initialization tasks are done in the service's ServiceMain
function when the service is started.
If multiple services share a process and some common process-wide
initialization needs to be done before any ServiceMain
function is called, the main thread can do the work before calling StartServiceCtrlDispatcher
, as long as it takes less than 30 seconds. Otherwise, another thread must be
created to do the process-wide initialization, while the main thread calls StartServiceCtrlDispatcher
and becomes the service control dispatcher. Any service-specific
initialization should still be done in the individual service main functions.
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