unit1.pas

本光盘是《Delphi 7应用教程》一书的配套光盘

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    PageControl1: TPageControl;
    TabSheet1: TTabSheet;
    TabSheet2: TTabSheet;
    Memo1: TMemo;
    Button1: TButton;
    Image1: TImage;
    Button2: TButton;
    OpenDialog1: TOpenDialog;
    OpenPictureDialog1: TOpenPictureDialog;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;
  TxtFName,PicFName:String;//存放打开的文本文件名和图片文件名的变量

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
begin
  OpenDialog1.Filter :='文本文件(*.txt)|*.txt';
  if(OpenDialog1.Execute) then
    begin
       TxtFName:=OpenDialog1.FileName ; //弹出打开文件对话框，供用户选择文件
       Memo1.Lines.LoadFromFile(TxtFName); //把选中的文件内容装入Memo组件中
    end;
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
  OpenPictureDialog1.Filter  :='图片文件(*.BMP;*.JPG;*.GIF)|*.BMP;*.JPG;*.GIF';
  if(OpenPictureDialog1.Execute) then
    begin
       PicFName:=OpenPictureDialog1.FileName ; //弹出打开图片对话框，供用户选择图片文件
       Image1.Picture.LoadFromFile (PicFName); //把选中的图片文件显示在Image组件中
    end;
end;

end.