[pywin32-checkins] pywin32/win32/Demos/service serviceEvents.py, 1.2, 1.3

[Mark H. <mha...@us...>]

Update of /cvsroot/pywin32/pywin32/win32/Demos/service
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv28146/win32/Demos/service

Modified Files:
	serviceEvents.py 
Log Message:
Support for RegisterDeviceNotification and related structures, including a
new demo and updates to serviceEvents demo.


Index: serviceEvents.py
===================================================================
RCS file: /cvsroot/pywin32/pywin32/win32/Demos/service/serviceEvents.py,v
retrieving revision 1.2
retrieving revision 1.3
diff -C2 -d -r1.2 -r1.3
*** serviceEvents.py	12 Feb 2008 12:53:07 -0000	1.2
--- serviceEvents.py	4 May 2008 10:45:54 -0000	1.3
***************
*** 1,8 ****
--- 1,21 ----
  # A Demo of a service that takes advantage of the additional notifications
  # available in later Windows versions.
+ 
+ # Note that all output is written as event log entries - so you must install
+ # and start the service, then look at the event log for messages as events
+ # are generated.
+ 
+ # Events are generated for USB device insertion and removal, power state
+ # changes and hardware profile events - so try putting your computer to
+ # sleep and waking it, inserting a memory stick, etc then check the event log
+ 
  import win32serviceutil, win32service
  import win32event
  import servicemanager
  
+ # Most event notification support lives around win32gui
+ import win32gui, win32gui_struct, win32con
+ GUID_DEVINTERFACE_USB_DEVICE = "{A5DCBF10-6530-11D2-901F-00C04FB951ED}"
+ 
  class EventDemoService(win32serviceutil.ServiceFramework):
      _svc_name_ = "PyServiceEventDemo"
***************
*** 13,16 ****
--- 26,35 ----
          win32serviceutil.ServiceFramework.__init__(self, args)
          self.hWaitStop = win32event.CreateEvent(None, 0, 0, None)
+         # register for a device notification - we pass our service handle
+         # instead of a window handle.
+         filter = win32gui_struct.PackDEV_BROADCAST_DEVICEINTERFACE(
+                                         GUID_DEVINTERFACE_USB_DEVICE)
+         self.hdn = win32gui.RegisterDeviceNotification(self.ssh, filter,
+                                     win32con.DEVICE_NOTIFY_SERVICE_HANDLE)
  
      # Override the base class so we can accept additional events.
***************
*** 20,23 ****
--- 39,43 ----
          rc |= win32service.SERVICE_ACCEPT_PARAMCHANGE \
                | win32service.SERVICE_ACCEPT_NETBINDCHANGE \
+               | win32service.SERVICE_CONTROL_DEVICEEVENT \
                | win32service.SERVICE_ACCEPT_HARDWAREPROFILECHANGE \
                | win32service.SERVICE_ACCEPT_POWEREVENT \
***************
*** 30,35 ****
          # This is only showing a few of the extra events - see the MSDN
          # docs for "HandlerEx callback" for more info.
!         # XXX can't do SERVICE_CONTROL_DEVICEEVENT until we wrap RegisterDeviceNotification.
!         if control == win32service.SERVICE_CONTROL_HARDWAREPROFILECHANGE:
              msg = "A hardware profile changed: type=%s, data=%s" % (event_type, data)
          elif control == win32service.SERVICE_CONTROL_POWEREVENT:
--- 50,57 ----
          # This is only showing a few of the extra events - see the MSDN
          # docs for "HandlerEx callback" for more info.
!         if control == win32service.SERVICE_CONTROL_DEVICEEVENT:
!             info = win32gui_struct.UnpackDEV_BROADCAST(data)
!             msg = "A device event occurred: %x - %s" % (event_type, info)
!         elif control == win32service.SERVICE_CONTROL_HARDWAREPROFILECHANGE:
              msg = "A hardware profile changed: type=%s, data=%s" % (event_type, data)
          elif control == win32service.SERVICE_CONTROL_POWEREVENT: