unit1.pas

《Delphi 7应用编程150例》源码（全）

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Label1: TLabel;
    Edit1: TEdit;
    Button1: TButton;
    OpenDialog1: TOpenDialog;
    procedure FormCreate(Sender: TObject);
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.FormCreate(Sender: TObject);
begin
    if self.OpenDialog1.Execute then
    begin
        self.Edit1.Text:=ExtractFileExt(self.OpenDialog1.FileName);
    end
    else
    begin
        Application.Terminate;
    end;
end;

procedure TForm1.Button1Click(Sender: TObject);
var
    NewName:String;
begin
    NewName:=ChangeFileExt(self.OpenDialog1.FileName,self.Edit1.Text);
    RenameFile(self.OpenDialog1.FileName,NewName);
end;

end.