Code
unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs;
type
TForm1 = class(TForm)
procedure FormCreate(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
//类声明
TMyClass = class
public
class procedure MyProc; //类方式
constructor Create; //Create 也是类方法
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
{ TMyClass }
constructor TMyClass.Create;
begin
inherited;
MyProc; //内部调用类方法
end;
class procedure TMyClass.MyProc;
begin
ShowMessage('ok'); //类方法实现
end;
procedure TForm1.FormCreate(Sender: TObject);
var
MyClass1: TMyClass;
begin
TMyClass.MyProc; //用类名调用类方法,显示:ok
MyClass1 := TMyClass.Create; //内部调用类方法,显示:ok
MyClass1.MyProc; //对象调用类方法,显示:ok
MyClass1.Free;
end;
end.
unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs;
type
TForm1 = class(TForm)
procedure FormCreate(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
//类声明
TMyClass = class
public
class procedure MyProc; //类方式
constructor Create; //Create 也是类方法
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
{ TMyClass }
constructor TMyClass.Create;
begin
inherited;
MyProc; //内部调用类方法
end;
class procedure TMyClass.MyProc;
begin
ShowMessage('ok'); //类方法实现
end;
procedure TForm1.FormCreate(Sender: TObject);
var
MyClass1: TMyClass;
begin
TMyClass.MyProc; //用类名调用类方法,显示:ok
MyClass1 := TMyClass.Create; //内部调用类方法,显示:ok
MyClass1.MyProc; //对象调用类方法,显示:ok
MyClass1.Free;
end;
end.