How does the application detect that PDA's power is off?

[supeiwang]

Hi every one:

what I use operating system is wince and what I use develop tool is EVC4

when user turn off the power or when the system suspends. May the application get notification message? and what is the notification message?


ThankX in advance

[.grammer(pro)]

Look with internet search engines the docs with e.x. "PDA system API" or so