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<title>Win32Service Service Control Message Constants</title>
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<table class="doctable table">
<caption><strong>Win32Service Service Control Message Constants</strong></caption>
<thead>
<tr>
<th>Constant</th>
<th>Value</th>
<th>Description</th>
</tr>
</thead>
<tbody class="tbody">
<tr id="constant.win32-service-control-continue">
<td><strong><code>WIN32_SERVICE_CONTROL_CONTINUE</code></strong></td>
<td>0x00000003</td>
<td>
Notifies a paused service that it should resume.
</td>
</tr>
<tr id="constant.win32-service-control-interrogate">
<td><strong><code>WIN32_SERVICE_CONTROL_INTERROGATE</code></strong></td>
<td>0x00000004</td>
<td>
Notifies a service that it should report its current status information
to the service control manager.
</td>
</tr>
<tr id="constant.win32-service-control-pause">
<td><strong><code>WIN32_SERVICE_CONTROL_PAUSE</code></strong></td>
<td>0x00000002</td>
<td>
Notifies a service that it should pause.
</td>
</tr>
<tr id="constant.win32-service-control-preshutdown">
<td><strong><code>WIN32_SERVICE_CONTROL_PRESHUTDOWN</code></strong></td>
<td>0x0000000F</td>
<td>
Notifies a service that the system will be shutting down. A service that
handles this notification blocks system shutdown until the service stops
or the preshutdown time-out interval expires. This value is not supported
by Windows Server 2003 and Windows XP/2000.
</td>
</tr>
<tr id="constant.win32-service-control-shutdown">
<td><strong><code>WIN32_SERVICE_CONTROL_SHUTDOWN</code></strong></td>
<td>0x00000005</td>
<td>
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. After the SCM sends this
control code, it will not send other control codes to the service.
</td>
</tr>
<tr id="constant.win32-service-control-stop">
<td><strong><code>WIN32_SERVICE_CONTROL_STOP</code></strong></td>
<td>0x00000001</td>
<td>
Notifies a service that it should stop.
</td>
</tr>
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