CeRunAppAtEvent

  • Article

This function starts running an application or launches a named event when a specified event occurs.

BOOL CeRunAppAtEvent(
  TCHAR* pwszAppName, 
  LONG lWhichEvent 
);

Parameters

  • pwszAppName
    [in] Pointer to a null-terminated string that specifies the name of the application to be started.

    You can also use this string to support a named event instead of launching an application. The following code example shows the format that you should use for the string pointed to by pwszAppName.

    "\\\\.\\Notifications\\NamedEvents\\Event Name"

    Event Name represents the application-defined name of the event to signal. When you use this format for pwszAppName, the event is opened and signaled. Named events are supported in Microsoft® Windows® CE .NET 4.0 and later.

  • lWhichEvent
    [in] Long integer that specifies the event at which the application is to be started. It is one of the following values.

    Value Description
    NOTIFICATION_EVENT_DEVICE_CHANGE A PC Card device changed.
    NOTIFICATION_EVENT_IR_DISCOVERED The device discovered a server by using infrared communications.
    NOTIFICATION_EVENT_NET_CONNECT The device connected to a network.
    NOTIFICATION_EVENT_NET_DISCONNECT The device disconnected from a network.
    NOTIFICATION_EVENT_NONE No events occurred. Remove all event registrations for this application.
    NOTIFICATION_EVENT_OFF_AC_POWER The user turned the alternating current (AC) power off.
    NOTIFICATION_EVENT_ON_AC_POWER The user turned the AC power on.
    NOTIFICATION_EVENT_RESTORE_END A full device data restore completed.
    NOTIFICATION_EVENT_RS232_DETECTED An RS232 connection was made.
    NOTIFICATION_EVENT_SYNC_END Data synchronization finished.
    NOTIFICATION_EVENT_TIME_CHANGE The system time changed.
    NOTIFICATION_EVENT_TZ_CHANGE The time zone changed.
    NOTIFICATION_EVENT_WAKEUP The device woke up.

Return Values

TRUE indicates success. FALSE indicates failure.

Remarks

The application is started with a system-defined command line. If there was already an instance of the application running, the new instance must send a private message to the existing instance and then shut down. The command line, which corresponds to the registered event, can be one of the following string constants.

Constant Value
APP_RUN_AFTER_EXTENDED_EVENT "AppRunAfterExtendedEvent"
APP_RUN_AFTER_SYNC "AppRunAfterSync"
APP_RUN_AFTER_TZ_CHANGE "AppRunAfterTzChange"
APP_RUN_AFTER_WAKEUP "AppRunAfterWakeup"
APP_RUN_AT_AC_POWER_ON "AppRunAtAcPowerOn"
APP_RUN_AT_AC_POWER_OFF "AppRunAtAcPowerOff"
APP_RUN_AT_NET_CONNECT "AppRunAtNetConnect"
APP_RUN_AT_NET_DISCONNECT "AppRunAtNetDisconnect"
APP_RUN_AT_DEVICE_CHANGE "AppRunDeviceChange"
APP_RUN_AT_IR_DISCOVERY "AppRunAtIrDiscovery"
APP_RUN_AT_RS232_DETECT "AppRunAtRs232Detect"
APP_RUN_AFTER_RESTORE "AppRunAfterRestore"

The string values in this table are processed as command line commands. In some cases, the part of the command line that follows the string is treated as a parameter.

Use the CeRunAppAtEvent function sparingly, because automatically starting an application can confuse the user and cause low-memory conditions on a machine with restricted memory. Ideally, the application should be small and non-intrusive.

Requirements

OS Versions: Windows CE 1.01 and later.
Header: Notify.h.
Link Library: Coredll.lib.

See Also

CeRunAppAtTime | Notify Functions

Last updated on Wednesday, April 13, 2005

© 2005 Microsoft Corporation. All rights reserved.