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1 | unit Device;
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2 |
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3 | interface
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4 |
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5 | uses
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6 | Classes, SysUtils, Int;
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7 |
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8 | type
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9 | { THandlers }
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10 |
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11 | THandlers = class
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12 | ReadHandlers: TReadEvents;
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13 | WriteHandlers: TWriteEvents;
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14 | constructor Create;
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15 | destructor Destroy; override;
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16 | end;
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17 |
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18 | { TDevice }
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19 |
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20 | TDevice = class
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21 | function GetHandlers: THandlers; virtual;
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22 | end;
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23 |
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24 |
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25 | implementation
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26 |
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27 | { THandlers }
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28 |
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29 | constructor THandlers.Create;
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30 | begin
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31 | ReadHandlers := TReadEvents.Create;
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32 | WriteHandlers := TWriteEvents.Create;
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33 | end;
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34 |
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35 | destructor THandlers.Destroy;
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36 | begin
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37 | FreeAndNil(ReadHandlers);
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38 | FreeAndNil(WriteHandlers);
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39 | inherited;
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40 | end;
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41 |
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42 | { TDevice }
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43 |
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44 | function TDevice.GetHandlers: THandlers;
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45 | begin
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46 | Result := nil;
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47 | end;
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48 |
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49 | end.
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50 |
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