CeRunAppAtEvent

A version of this page is also available for

Windows Embedded CE 6.0 R3

4/8/2010

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

Syntax

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 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_INTERNET_PROXY_CHANGE	The Internet Proxy used by the device has 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_RNDIS_FN_DETECTED	RNDISFN interface is instantiated.
  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 Value

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.

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.

After you receive a notification that you have previously set, call the CeRunAppAtEvent function with your event name and the NOTIFICATION_EVENT_NONE value to clear the notification from the notification database. If you do not clear the notification, on the next call to the same event a duplicate notification may occur.

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

See Also

Reference

CeRunAppAtTime
Notify Functions