Intermec 6200 Reference Guide

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These codes are defined and described in the Intel/Microsoft APM Specification,

versions 1.0 and 1.1.  Remember that the codes have a prefix of 

PWR_

" or 

APM_,

"

depending on their usage.  Additional clarification of NORAPM.DLL's use of

these events is given in the following paragraphs.

A suspend timeout is pending.  Drivers and applications should fail the event if

they are busy.  If the event is failed, NORAPM.DLL restarts the suspend timeout

suspend request but does not suspend the system.

The system has returned from a suspend timeout or a user suspend.  Drivers and

applications should respond to system changes at this time.

Power status has changed.  The optional parameter of this event message

contains the first four bytes of the current 

tagPOWER_STATUS

 (see NORAPM.H,

in the toolkit).  Use the message to determine whether the system is running on

battery power or line power without having to poll NORAPM.DLL.

The system battery is running low.  The optional parameter of this event

message contains the last four bytes of the current 

tagPOWER_STATUS

.  Use the

message to determine the current battery status without having to poll

NORAPM.DLL.

The user has pressed the suspend/resume switch and wants to suspend the

system.  Drivers or applications that attempt to fail this request annoy the user

unless they put up some sort of polite explanation why the system does not turn

off when the switch is pressed.  In any case, the driver or application must

prepare for an impending suspend because the APM driver is allowed to override

the fail request and suspend the system.

This event is issued whenever the time has been updated to correct for

timeĆwarp" that is not due to a suspend.  Applications that perform processing

tied to real time should check the time whenever they see this event, in addition

to checking the time whenever they see any of the resume events.