DelphiはIPアドレス入力コントロールを実現する

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

uses
ComCtrls, CommCtrl;

{$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.