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Python Programming On Win32 by Mark Hammond, Andy Robinson

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User Interface

Services typically have no user interface associated with them. It’s important to remember that services may be running while no user is logged into the system, so often there is no user with which to interact.

In some cases, it’s possible for the service to display simple dialog boxes, such as a MessageBox. However, this is fraught with danger and best avoided. Communication with the user is typically done via the Windows NT Event Log.

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