Recently, I saw a video by Jim Wilson on running applications at specific events. He used CeRunAppAtEvent() native api, from managed code, to register an application to run when the device wakes up. Lets look at the API,
BOOL CeRunAppAtEvent(TCHAR *pwszAppName, LONG lWhichEvent);
pwszAppName: string which specifies the name of the application to be started. This string can also specify a named event. In case of a named event, the event will be opened and signaled. The named event should be of the format:
"\\\\.\\Notofications\\NamedEvents\\Event Name"
"Event Name" is the application defined event name
lWhichEvent: Specifies the event at which the application has to be started, it can take the following values,
|
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.
|
NOTIFICATION_EVENT_NONE unregisters all the events associated with that application.
I have the following two functions,
void RegisterApp()
{
BOOL ret;
ret = CeRunAppAtEvent(TEXT("\\Windows\\BubbleBreaker.exe"), NOTIFICATION_EVENT_WAKEUP);
if(!ret)
{
printf("RegisterApp:CeRunAppAtEvent failed, err:0x%x\r\n", GetLastError());
}
}
void UnRegisterApp()
{
BOOL ret;
ret = CeRunAppAtEvent(TEXT("\\Windows\\BubbleBreaker.exe"), NOTIFICATION_EVENT_NONE);
if(!ret)
{
printf("UnRegisterApp:CeRunAppAtEvent failed, err:0x%x\r\n", GetLastError());
}
}
So, whenever the device wakes up from sleep, the BubbleBreaker game will start. To simulate a device sleep and wake up on the emulator, select File -> Save State and Exit from the Emulator menu. To wake the device up, select Tools -> Connect to Device... from Visual Studio (2005).
Here's a video for you folks,