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program project1;
{$mode objfpc}
type
TSomeEvent = procedure(Sender: TObject; X, Y, Line: integer; mark: Integer) of object;
type
TSubObject = class(TObject)
public
SomeEvent: TSomeEvent;
end;
TMyObject = class(TObject)
private
fSub : TSubObject;
protected
procedure DoSomeEvent(Sender: TObject; X, Y, Line: integer; mark: Integer);
public
constructor Create;
destructor Destroy; override;
function GetSomeEvent: TSomeEvent;
end;
constructor TMyObject.Create;
begin
fSub := TSubObject.Create;
fSub.SomeEvent := @Self.DoSomeEvent;
end;
destructor TMyObject.Destroy;
begin
fSub.Free;
end;
function TMyObject.GetSomeEvent: TSomeEvent;
begin
Result := fSub.SomeEvent;
end;
procedure TMyObject.DoSomeEvent(Sender: TObject; X, Y, Line: integer; mark: Integer);
begin
writeln('do some event');
end;
var
my : TMyObject;
mtd : TMethod;
type
TGetProc = function (): TMethod of object;
begin
my := TMyObject.Create;
mtd := TGetProc(@my.GetSomeEvent)();
writeln('mtd.Data = ', PtrInt(mtd.Data));
writeln('mtd.Code = ', PtrInt(mtd.Code));
if Assigned(TSomeEvent(mtd)) then
TSomeEvent(mtd)(nil,0,0,0,0);
my.Free;
end.
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