How to reveal that screen is locked?

Question

In my application I need to know when device is locked (on HTC\'s it looks like short press on \"power\" button). So the question is: which event is triggered when device is

Answer 1

There is a better way:

KeyguardManager myKM = (KeyguardManager) context.getSystemService(Context.KEYGUARD_SERVICE);
if( myKM.inKeyguardRestrictedInputMode()) {
 //it is locked
} else {
 //it is not locked
}