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type
IObjetTest = interface(IInterface)
['{A43D3494-B25A-41C2-88BA-BD6F6246BD8D}']
function GetA: integer;
procedure SetA(const value: integer);
function GetB: integer;
procedure SetB(const value: integer);
procedure Change;
property A : integer read GetA write SetA;
property B : integer read GetB write SetB;
end;
type
TObjetTest = class(TInterfacedObject, IObjetTest)
private
fA : integer;
fB : integer;
fOnChange : TNotifyEvent;
function GetA: integer;
procedure SetA(const value: integer);
function GetB: integer;
procedure SetB(const value: integer);
protected
procedure Change; virtual;
published
property A : integer read GetA write SetA;
property B : integer read GetB write SetB;
property OnChange: TNotifyEvent read fOnChange write fOnChange;
public
constructor Create; reintroduce; overload;
constructor Create(const aA, aB: integer); reintroduce; overload;
destructor Destroy; override;
end;
{ TObjetTest }
procedure TObjetTest.Change;
begin
if assigned(fOnChange) then
fOnChange(Self);
end;
constructor TObjetTest.Create(const aA, aB: integer);
begin
inherited Create;
fA := aA;
fB := aB;
end;
constructor TObjetTest.Create;
begin
inherited Create;
fA := 0;
fB := 0;
end;
destructor TObjetTest.Destroy;
begin
inherited;
end;
function TObjetTest.GetA: integer;
begin
result := fA;
end;
function TObjetTest.GetB: integer;
begin
result := fB;
end;
procedure TObjetTest.SetA(const value: integer);
begin
if fA <> value then
begin
fA := value;
change;
end;
end;
procedure TObjetTest.SetB(const value: integer);
begin
if fB <> value then
begin
fB := value;
change;
end;
end; |
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