动态创建一个IPEdit控件

最新推荐文章于 2023-03-27 14:10:58 发布

转载最新推荐文章于 2023-03-27 14:10:58 发布 · 108 阅读

CC 4.0 BY-SA版权

原文链接：http://www.cnblogs.com/lzj1981/archive/2013/04/28/3049017.html

本文介绍如何在Delphi中创建一个自定义的IP地址编辑控件。通过继承标准的TEdit控件并利用Windows提供的Internet控件类，实现了一个能够正确显示和编辑IP地址的TIpEdit组件。该组件可以方便地集成到Delphi应用程序中，为用户提供直观的IP地址输入界面。

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unit Unit1;

interface

uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, ComCtrls, CommCtrl, StdCtrls;

type
TIpEdit = class(TEdit)
procedure CreateParams(var Params: TCreateParams); override;
end;

TForm1 = class(TForm)
    Edit1: TEdit;
    Button1: TButton;
    procedure FormCreate(Sender: TObject);
    procedure Button1Click(Sender: TObject);
private
    IpEdit: TIpEdit;
    { Private declarations }
public
    { Public declarations }
end;

var
Form1: TForm1;

implementation

{$R *.dfm}

procedure TIpEdit.CreateParams(var Params: TCreateParams);
begin
inherited CreateParams(Params);
InitCommonControl(ICC_INTERNET_CLASSES);
CreateSubClass(Params, WC_IPADDRESS);
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
IpEdit := TIpEdit.Create(self);
IpEdit.Parent := Self;
IpEdit.SetBounds(10,10,121,22);
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
edit1.Text := IpEdit.Text;
end;

end.

uses
ComCtrls, CommCtrl;

TIpEdit = class(TEdit)
procedure CreateParams(var Params: TCreateParams); override;
end;

{ TIpEdit }

procedure TIpEdit.CreateParams(var Params: TCreateParams);
begin
inherited CreateParams(Params);
InitCommonControl(ICC_INTERNET_CLASSES);
CreateSubClass(Params, WC_IPADDRESS);
end;

转载于:https://www.cnblogs.com/lzj1981/archive/2013/04/28/3049017.html