84 lines
1.7 KiB
C++
84 lines
1.7 KiB
C++
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/*
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* pcy17Dec92 Added Validate()
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* cad10Jun93: fixed GetState()
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*
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*/
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#include "cdefine.h"
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#define INCL_BASE
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#define INCL_DOS
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#define INCL_NOPM
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extern "C" {
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#if (C_OS & C_OS2)
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#include <os2.h>
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#endif
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#include <stdlib.h>
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#include <stdio.h>
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#include <malloc.h>
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#include <string.h>
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}
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#include "event.h"
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#include "apc.h"
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#include "chgsensr.h"
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#include "utils.h"
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#include "device.h"
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//Constructor
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ChangeSensor :: ChangeSensor(PDevice aParent,
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PCommController aCommController,
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INT aSensorCode,
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INT anUpperEventCode,
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INT aLowerEventCode,
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ACCESSTYPE anACCESSTYPE)
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: StateSensor(aParent,aCommController, aSensorCode, anACCESSTYPE)
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{
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theUpperEventCode = anUpperEventCode;
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theLowerEventCode = aLowerEventCode;
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// Disable validation checking until the sensor value
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// is initialized
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theValidationCheckingEnabled = 0;
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}
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INT ChangeSensor::Validate(INT aCode, const PCHAR aValue)
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{
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INT err = StateSensor::Validate(aCode, aValue);
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if (theValidationCheckingEnabled)
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{
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if (err != ErrNO_STATE_CHANGE )
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{
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PEvent change_event;
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// Check for a positive change
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if (strcmp(aValue, theValue) > 0)
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{
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change_event = new Event(theUpperEventCode, "");
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}
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// Otherwise the change must be negative
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else
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{
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change_event = new Event(theLowerEventCode, "");
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}
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theDevice->Update(change_event);
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delete change_event;
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change_event = NULL;
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}
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}
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else
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{
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// Enable validation checking once the sensor value
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// has been initialized
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theValidationCheckingEnabled = 1;
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}
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return err;
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}
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