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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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