4.2 AsyncUI Notification in Unidirectional Communication Mode
The following diagram illustrates the processing of an AsyncUI notification in unidirectional communication mode. In this example, the printer driver uses the notification type identifier value AsyncPrintNotificationType_AsyncUI (section 2.2.1) to request the client to display an informative message to the user without requesting any response to that message.
All text within the message box is identified by using references to a string resource contained within a client-resident resource file.

Figure 13: Processing an AsyncUI notification in unidirectional communication mode
The following is a sample notification.
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<?xml version="1.0" ?> <asyncPrintUIRequest xmlns= "http://schemas.microsoft.com/2003/print/asyncui/v1/request"> <v1> <requestOpen> <balloonUI iconID="1" resourceDll="IHV.dll"> <title stringID="1234" resourceDll="IHV.dll" /> <body stringID="100" resourceDll="IHV.dll" /> </balloonUI> </requestOpen> </v1> </asyncPrintUIRequest>