zoukankan      html  css  js  c++  java
  • 类方法调用

    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.
    
  • 相关阅读:
    BSP与HAL关系(转)
    [Advanced Algorithm]
    [Advanced Algorithm]
    [Advanced Algorithm]
    [Intermediate Algorithm]
    [Intermediate Algorithm]
    [Intermediate Algorithm]
    [Intermediate Algorithm]
    [Intermediate Algorithm]
    [Advanced Algorithm]
  • 原文地址:https://www.cnblogs.com/del/p/983580.html
Copyright © 2011-2022 走看看