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unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls;
type
TMyClass = class
private
FGetStrProc:TGetStrProc;
public
property GetStrProc:TGetStrProc read FGetStrProc write FGetStrProc;
procedure OnGetStrProc;
end;
TForm1 = class(TForm)
btn1: TButton;
procedure FormCreate(Sender: TObject);
procedure btn1Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
MyObject:TMyClass;
implementation
{$R *.dfm}
{ TMyClass }
procedure TMyClass.OnGetStrProc;
begin
if Assigned(FGetStrProc) then FGetStrProc('Hello, World');
end;
procedure ReceiveMsg(const S: string);
begin
ShowMessage(s); //此处得到的是乱码
end;
procedure TForm1.FormCreate(Sender: TObject);
var
TmpEvent:TGetStrProc;
begin
MyObject := TMyClass.Create;
TMethod(TmpEvent).Code := @ReceiveMsg;
TMethod(TmpEvent).Data := MyObject;
MyObject.GetStrProc := TmpEvent;
end;
procedure TForm1.btn1Click(Sender: TObject);
begin
MyObject.OnGetStrProc;
end;
end.
procedure ReceiveMsg1(Address:Integer;const S: string);
begin
ShowMessage(s); //此处得到的正确的值
end;