This function starts running an application when a specified event occurs.
At a Glance
| Header file: | Notify.h |
| Windows CE versions: | 1.01 and later |
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.
lWhichEvent
[in] Event at which the application is to be started. It is one of the following values:
| Value | Description |
| NOTIFICATION_EVENT_NONE | No events—remove all event registrations for this application. |
| NOTIFICATION_EVENT_SYNC_END | When data synchronization finishes. |
| NOTIFICATION_EVENT_DEVICE_CHANGE | When a PC Card device is changed. |
| NOTIFICATION_EVENT_RS232_DETECTED | When an RS232 connection is made. |
| NOTIFICATION_EVENT_TIME_CHANGE | When the system time is changed. |
| NOTIFICATION_EVENT_RESTORE_END | When a full device data restore completes. |
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_SYNC | “AppRunAfterSync” |
| 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.
The following constants are defined in the header file, but they are not supported:
| NOTIFICATION_EVENT_IR_DISCOVERED |
| NOTIFICATION_EVENT_NET_CONNECT |
| NOTIFICATION_EVENT_NET_DISCONNECT |
| NOTIFICATION_EVENT_OFF_AC_POWER |
| NOTIFICATION_EVENT_ON_AC_POWER |
See Also