ProtForm.pas
资源名称:delphi.rar [点击查看]
上传用户:fh681027
上传日期:2022-07-23
资源大小:1959k
文件大小:1k
源码类别:
Delphi控件源码
开发平台:
Delphi
- unit ProtForm;
- interface
- uses
- Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
- StdCtrls;
- type
- TForm1 = class(TForm)
- Button1: TButton;
- Button2: TButton;
- procedure Button1Click(Sender: TObject);
- procedure Button2Click(Sender: TObject);
- private
- { Private declarations }
- public
- { Public declarations }
- end;
- var
- Form1: TForm1;
- implementation
- {$R *.DFM}
- uses
- TestClass;
- procedure TForm1.Button1Click(Sender: TObject);
- var
- Obj: TTest;
- begin
- Obj := TTest.Create;
- Obj.PublicData := 10;
- // Obj.ProtectedData := 20; //won't compile
- ShowMessage (Obj.GetValue);
- Obj.Free;
- end;
- type
- TFake = class (TTest);
- procedure TForm1.Button2Click(Sender: TObject);
- var
- Obj: TTest;
- begin
- Obj := TTest.Create;
- Obj.PublicData := 10;
- TFake (Obj).ProtectedData := 20; // compiles!
- ShowMessage (Obj.GetValue);
- Obj.Free;
- end;
- end.