bmpform.pas

外国人写的各种类型的源代码,有兴趣的朋友看看吧！是学习的好东西哟

unit BmpForm;

interface

uses
  Windows, Classes, Graphics, Forms, Controls, Menus,
  Dialogs, StdCtrls, ExtCtrls, SysUtils, ComCtrls, Buttons;

type
  TBitmapForm = class(TForm)
    MainMenu1: TMainMenu;
    File1: TMenuItem;
    Open1: TMenuItem;
    N1: TMenuItem;
    Exit1: TMenuItem;
    Help1: TMenuItem;
    AboutImageViewer1: TMenuItem;
    OpenDialog1: TOpenDialog;
    Options1: TMenuItem;
    Image1: TImage;
    ColorDepth1: TMenuItem;
    GenerateSlow1: TMenuItem;
    GenerateFast1: TMenuItem;
    ScrollPanel1: TMenuItem;
    PanelScroll: TPanel;
    TrackBar1: TTrackBar;
    BtnCancel: TBitBtn;
    BtnGo: TBitBtn;
    Label1: TLabel;
    procedure Open1Click(Sender: TObject);
    procedure Exit1Click(Sender: TObject);
    procedure AboutImageViewer1Click(Sender: TObject);
    procedure ColorDepth1Click(Sender: TObject);
    procedure GenerateSlow1Click(Sender: TObject);
    procedure GenerateFast1Click(Sender: TObject);
    procedure ScrollPanel1Click(Sender: TObject);
    procedure TrackBar1Change(Sender: TObject);
    procedure BtnGoClick(Sender: TObject);
    procedure BtnCancelClick(Sender: TObject);
    procedure FormCreate(Sender: TObject);
  private
    nLines: Integer;
    fCancel: Boolean;
  public
    { Public declarations }
  end;

var
  BitmapForm: TBitmapForm;

implementation
              
{$R *.DFM}

procedure TBitmapForm.Open1Click(Sender: TObject);
begin
  if OpenDialog1.Execute then
  begin
    Image1.Picture.LoadFromFile (OpenDialog1.FileName);
    Caption := 'Image Viewer - ' + OpenDialog1.FileName;
  end;
end;

procedure TBitmapForm.Exit1Click(Sender: TObject);
begin
  Close;
end;

procedure TBitmapForm.AboutImageViewer1Click(Sender: TObject);
begin
  MessageDlg ('Image Viewer is an example'
    + #13'of the book "Mastering Delphi"'
    + #13'written by Marco Cant