Windows CE: Enumerating User Notifications

November 28, 2008 · 4 min read

<< Windows CE: Soft Reset | Home | Platform Builder:Building Multiple Folders >>

I put together the following OutputNotifications() function to show how to enumerate User Notifications.

#include <Notify.h>

void OutputNotifications()

{

                HANDLE *hNotifications = NULL;

                DWORD NumNotifications;

                DWORD Count;

                DWORD BytesNeeded;

                CE_NOTIFICATION_INFO_HEADER *NIHeader;

                CE_NOTIFICATION_TRIGGER* Trigger;

                CE_USER_NOTIFICATION* UserNotification;

                void *pBuffer;

                // First call CeGetUserNotifications to find out how many notifications are available

                // by passing in zero as the second argument

                CeGetUserNotificationHandles( hNotifications, 0, &NumNotifications );

                RETAILMSG( 1, (TEXT("Num Notifications available %d\n"), NumNotifications ));

                hNotifications = (HANDLE *)malloc( NumNotifications * sizeof( HANDLE *) );

                // Now get the notifications

                CeGetUserNotificationHandles( hNotifications, NumNotifications, &NumNotifications );

                for( Count = 0; Count < NumNotifications; Count++ )

                {

                                // Now with a valid handle to a notification find out how many bytes are needed

                                // to get the data

                                CeGetUserNotification( hNotifications[Count], 0, &BytesNeeded, NULL );

                                RETAILMSG( 1, (TEXT("%d Bytes needed %d\n"), Count, BytesNeeded ));

                                pBuffer = malloc( BytesNeeded );

                                // Error checking left for  you, but now we can get the data

                                CeGetUserNotification( hNotifications[Count], BytesNeeded, &BytesNeeded, (BYTE *)pBuffer );

                                NIHeader = (CE_NOTIFICATION_INFO_HEADER *)pBuffer;

                                Trigger = NIHeader->pcent;

                                UserNotification = NIHeader->pceun;

                                RETAILMSG( 1, (TEXT("\tStatus %d\n"), NIHeader->dwStatus ));

                                RETAILMSG( 1, (TEXT("\tTrigger Type %d"), Trigger->dwType ));

                                switch( Trigger->dwType )

                                {

                                case CNT_EVENT:

                                                RETAILMSG( 1, (TEXT(" Event\n")));

                                                break;

                                case CNT_TIME:

                                                RETAILMSG( 1, (TEXT(" Time\n")));

                                                break;

                                case CNT_PERIOD:

                                                RETAILMSG( 1, (TEXT(" Period\n")));

                                                break;

                                case CNT_CLASSICTIME:

                                                RETAILMSG( 1, (TEXT(" Classic Time\n")));

                                                break;

                                }

                                RETAILMSG( 1, (TEXT("\tTrigger Event %d"), Trigger->dwEvent ));

                                switch( Trigger->dwEvent )

                                {

                                case NOTIFICATION_EVENT_NONE                     :

                                                RETAILMSG( 1, (TEXT(" None\n")));

                                                break;

                                case NOTIFICATION_EVENT_TIME_CHANGE              :

                                                RETAILMSG( 1, (TEXT(" Time Change\n")));

                                                break;

                                case NOTIFICATION_EVENT_SYNC_END                 :

                                                RETAILMSG( 1, (TEXT(" Sync End\n")));

                                                break;

                                case NOTIFICATION_EVENT_ON_AC_POWER              :

                                                RETAILMSG( 1, (TEXT(" On AC Power\n")));

                                                break;

                                case NOTIFICATION_EVENT_OFF_AC_POWER             :

                                                RETAILMSG( 1, (TEXT(" Off AC Power\n")));

                                                break;

                                case NOTIFICATION_EVENT_NET_CONNECT              :

                                                RETAILMSG( 1, (TEXT(" Net Connect\n")));

                                                break;

                                case NOTIFICATION_EVENT_NET_DISCONNECT           :

                                                RETAILMSG( 1, (TEXT(" Net Disconnect\n")));

                                                break;

                                case NOTIFICATION_EVENT_DEVICE_CHANGE            :

                                                RETAILMSG( 1, (TEXT(" Device Change\n")));

                                                break;

                                case NOTIFICATION_EVENT_IR_DISCOVERED            :

                                                RETAILMSG( 1, (TEXT(" IR Discovered\n")));

                                                break;

                                case NOTIFICATION_EVENT_RS232_DETECTED           :

                                                RETAILMSG( 1, (TEXT(" RS232 Detected\n")));

                                                break;

                                case NOTIFICATION_EVENT_RESTORE_END             :

                                                RETAILMSG( 1, (TEXT(" Restore End\n")));

                                                break;

                                case NOTIFICATION_EVENT_WAKEUP                  :

                                                RETAILMSG( 1, (TEXT(" Wakeup\n")));

                                                break;

                                case NOTIFICATION_EVENT_TZ_CHANGE               :

                                                RETAILMSG( 1, (TEXT(" Timezone Change\n")));

                                                break;

                                case NOTIFICATION_EVENT_MACHINE_NAME_CHANGE     :

                                                RETAILMSG( 1, (TEXT(" Machine Name Change\n")));

                                                break;

                                }

                                RETAILMSG( 1, (TEXT("\tTrigger Application %s\n"),

                                                Trigger->lpszApplication ));

                                RETAILMSG( 1, (TEXT("\tTrigger Arguments %s\n"),

                                                Trigger->lpszArguments ));

                                RETAILMSG( 1, (TEXT("\tTrigger EndTime %d/%d/%d %d:%02d\n"),

                                                Trigger->stEndTime.wMonth,

                                                Trigger->stEndTime.wDay,

                                                Trigger->stEndTime.wYear,

                                                Trigger->stEndTime.wHour,

                                                Trigger->stEndTime.wMinute ));

                                RETAILMSG( 1, (TEXT("\tTrigger StartTime %d/%d/%d %d:%02d\n"),

                                                Trigger->stStartTime.wMonth,

                                                Trigger->stStartTime.wDay,

                                                Trigger->stStartTime.wYear,

                                                Trigger->stStartTime.wHour,

                                                Trigger->stStartTime.wMinute ));

                                if( UserNotification != NULL )

                                {

                                                RETAILMSG( 1, (TEXT("\tUser Action %d "), UserNotification->ActionFlags));

                                                if( UserNotification->ActionFlags & PUN_LED)

                                                                RETAILMSG( 1, (TEXT("LED ")));

                                                if( UserNotification->ActionFlags & PUN_VIBRATE)

                                                                RETAILMSG( 1, (TEXT("Vibrate ")));

                                                if( UserNotification->ActionFlags & PUN_DIALOG)

                                                                RETAILMSG( 1, (TEXT("Dialog ")));

                                                if( UserNotification->ActionFlags & PUN_SOUND)

                                                                RETAILMSG( 1, (TEXT("Sound ")));

                                                if( UserNotification->ActionFlags & PUN_REPEAT)

                                                                RETAILMSG( 1, (TEXT("Repeat ")));

                                                RETAILMSG(1, (TEXT("\n")));

                                                if( UserNotification->pwszDialogText != NULL )

                                                {

                                                                RETAILMSG( 1, (TEXT("\tUser Dialog Title %s\n"),

                                                                                UserNotification->pwszDialogTitle));

                                                                RETAILMSG( 1, (TEXT("\tUser Dialog Text %s\n"),

                                                                                UserNotification->pwszDialogText));

                                                }

                                                if( UserNotification->ActionFlags & PUN_SOUND)

                                                                RETAILMSG( 1, (TEXT("\tUser Sound %s\n"),

                                                                                UserNotification->pwszSound));

                                }

                                free( pBuffer );

                }

                free( hNotifications );

}

The output on a PocketPC is:

Num Notifications available 11

0 Bytes needed 232

       Status 0

       Trigger Type 4 Classic Time

       Trigger Event 0 None

       Trigger Application Windows\clock.exe

       Trigger Arguments (NULL)

       Trigger EndTime 0/0/0 0:00

       Trigger StartTime 12/1/2008 5:00

       User Action 31 LED Vibrate Dialog Sound Repeat

       User Dialog Title Daily Alarm

       User Dialog Text 6:00 AM 12/1/08

No description

       User Sound Alarm1

1 Bytes needed 232

       Status 0

       Trigger Type 4 Classic Time

       Trigger Event 0 None

       Trigger Application Windows\clock.exe

       Trigger Arguments (NULL)

       Trigger EndTime 0/0/0 0:00

       Trigger StartTime 12/2/2008 8:00

       User Action 31 LED Vibrate Dialog Sound Repeat

       User Dialog Title Daily Alarm

       User Dialog Text 9:00 AM 12/2/08

No description

       User Sound Alarm1

2 Bytes needed 120

       Status 0

       Trigger Type 2 Time

       Trigger Event 0 None

       Trigger Application clocknot.exe

       Trigger Arguments AppRunAtTime

       Trigger EndTime 0/0/0 0:00

       Trigger StartTime 12/4/2008 23:00

3 Bytes needed 198

       Status 0

       Trigger Type 1 Event

       Trigger Event 1 Time Change

       Trigger Application \\.\Notifications\NamedEvents\SSTimeChange

       Trigger Arguments AppRunAfterTimeChange

       Trigger EndTime 0/0/0 0:00

       Trigger StartTime 0/0/0 0:00

4 Bytes needed 134

       Status 0

       Trigger Type 1 Event

       Trigger Event 1 Time Change

       Trigger Application calnot.exe

       Trigger Arguments AppRunAfterTimeChange

       Trigger EndTime 0/0/0 0:00

       Trigger StartTime 0/0/0 0:00

5 Bytes needed 128

       Status 0

       Trigger Type 1 Event

       Trigger Event 10 Restore End

       Trigger Application calnot.exe

       Trigger Arguments AppRunAfterRestore

       Trigger EndTime 0/0/0 0:00

       Trigger StartTime 0/0/0 0:00

6 Bytes needed 132

       Status 0

       Trigger Type 1 Event

       Trigger Event 10 Restore End

       Trigger Application clocknot.exe

       Trigger Arguments AppRunAfterRestore

       Trigger EndTime 0/0/0 0:00

       Trigger StartTime 0/0/0 0:00

7 Bytes needed 138

       Status 0

       Trigger Type 1 Event

       Trigger Event 1 Time Change

       Trigger Application clocknot.exe

       Trigger Arguments AppRunAfterTimeChange

       Trigger EndTime 0/0/0 0:00

       Trigger StartTime 0/0/0 0:00

8 Bytes needed 136

       Status 0

       Trigger Type 1 Event

       Trigger Event 1 Time Change

       Trigger Application connmgr.exe

       Trigger Arguments AppRunAfterTimeChange

       Trigger EndTime 0/0/0 0:00

       Trigger StartTime 0/0/0 0:00

9 Bytes needed 132

       Status 0

       Trigger Type 1 Event

       Trigger Event 9 RS232 Detected

       Trigger Application connmgr.exe

       Trigger Arguments AppRunAtRs232Detect

       Trigger EndTime 0/0/0 0:00

       Trigger StartTime 0/0/0 0:00

10 Bytes needed 132

       Status 0

       Trigger Type 1 Event

       Trigger Event 9 RS232 Detected

       Trigger Application repllog.exe

       Trigger Arguments AppRunAtRs232Detect

       Trigger EndTime 0/0/0 0:00

       Trigger StartTime 0/0/0 0:00

Copyright © 2008 – Bruce Eitman

All Rights Reserved

Friday, November 28, 2008 10:20 PM

This article is part of the GWB Archives. Original Author: Bruce Eitman

New on Geeks with Blogs

  • We Won The One Award I Actually Care About

    Full Scale made the Inc. 5000 for the fifth year straight, the 12th listing across my three companies. Here is why the one award you cannot buy is worth stopping for.

  • Your Customers Build the Features Now

    I let a tool I liked sit dead for a year rather than build the features I wanted. An MCP server meant I never had to, and your customers can do the same to your product.

  • Get the Size of a Directory in Linux the Easy Way

    du -sh for the quick answer, ncdu for the cleanup, df for the disk itself: every command for checking directory size in Linux, plus why du and df never agree.

  • Vim Search and Replace: The Ultimate Guide

    One :%s command replaces every match in a file before a find dialog would even open. The Vim substitute patterns worth the muscle memory: flags, ranges, capture groups, and multi-file edits.