card.pas

一个基本的数据库开发示例

unit Card;

interface

uses
  SysUtils, WinTypes, WinProcs, Messages, Classes, Graphics, Controls,
  Forms, Dialogs, Menus, ExtCtrls, Buttons, DB, DBTables;

type
  TCardForm = class(TForm)
    CardMenu: TMainMenu;
    CardManage: TMenuItem;
    New: TMenuItem;
    Open: TMenuItem;
    Save: TMenuItem;
    SaveAs: TMenuItem;
    Separator1: TMenuItem;
    Print: TMenuItem;
    Separator2: TMenuItem;
    Exit: TMenuItem;
    Edit: TMenuItem;
    Insert: TMenuItem;
    Delete: TMenuItem;
    Separator3: TMenuItem;
    Find: TMenuItem;
    Help: TMenuItem;
    Content: TMenuItem;
    UseHelp: TMenuItem;
    Separator4: TMenuItem;
    About: TMenuItem;
    SpeedBarPanel: TPanel;
    SpeedBtnOpen: TSpeedButton;
    SpeedBtnSave: TSpeedButton;
    SpeedBtnPrint: TSpeedButton;
    SpeedBtnExit: TSpeedButton;
    SpeedBtnInsert: TSpeedButton;
    SpeedBtnDelete: TSpeedButton;
    SpeedBtnFind: TSpeedButton;
    SpeedBtnContent: TSpeedButton;
    SpeedBtnAbout: TSpeedButton;
    StatusBarPanel: TPanel;
    StatusBarTitle: TPanel;
    StatusBarTime: TPanel;
    CardTimer: TTimer;
    CardTable: TTable;
    CardDataSource: TDataSource;
    procedure FormCreate(Sender: TObject);
    procedure ExitClick(Sender: TObject);
    procedure NewClick(Sender: TObject);
    procedure OpenClick(Sender: TObject);
    procedure SaveClick(Sender: TObject);
    procedure SaveAsClick(Sender: TObject);
    procedure PrintClick(Sender: TObject);
    procedure InsertClick(Sender: TObject);
    procedure DeleteClick(Sender: TObject);
    procedure FindClick(Sender: TObject);
    procedure ContentClick(Sender: TObject);
    procedure UseHelpClick(Sender: TObject);
    procedure AboutClick(Sender: TObject);
    procedure CardTimerTimer(Sender: TObject);
    procedure FormShow(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
    Procedure DisplayHint(Sender: TObject);
  end;

var
  CardForm: TCardForm;

implementation

{$R *.DFM}
Procedure TCardForm.DisplayHint(Sender: TObject);
begin
     StatusBarTitle.Caption := Application.Hint;
end;

procedure TCardForm.FormCreate(Sender: TObject);
begin
     Application.OnHint := DisplayHint;
end;

procedure TCardForm.ExitClick(Sender: TObject);
begin
     Close;
end;

procedure TCardForm.NewClick(Sender: TObject);
begin
     Save.Enabled := False;
     SaveAs.Enabled := False;
     Print.Enabled := False;
     Delete.Enabled := False;
     Find.Enabled := False;

     SpeedBtnSave.Enabled := False;
     SpeedBtnPrint.Enabled := False;
     SpeedBtnDelete.Enabled := False;
     SpeedBtnFind.Enabled := False;
end;

procedure TCardForm.OpenClick(Sender: TObject);
begin
     {}
end;

procedure TCardForm.SaveClick(Sender: TObject);
begin
     {}
end;

procedure TCardForm.SaveAsClick(Sender: TObject);
begin
     {}
end;

procedure TCardForm.PrintClick(Sender: TObject);
begin
     {}
end;

procedure TCardForm.InsertClick(Sender: TObject);
begin
     {}
end;

procedure TCardForm.DeleteClick(Sender: TObject);
begin
     {}
end;

procedure TCardForm.FindClick(Sender: TObject);
begin
     {}
end;

procedure TCardForm.ContentClick(Sender: TObject);
begin
     {}
end;

procedure TCardForm.UseHelpClick(Sender: TObject);
begin
     {}
end;

procedure TCardForm.AboutClick(Sender: TObject);
begin
     {}
end;

procedure TCardForm.CardTimerTimer(Sender: TObject);
begin
     StatusBarTime.Caption := TimeToStr(Time);
end;

procedure TCardForm.FormShow(Sender: TObject);
begin
     try
        CardTable.DatabaseName := ExtractFilePath (Application.ExeName);
        CardTable.TableName := 'Demo.db';
        CardTable.Open;
     except
        if MessageDlg ('数据库路径或数据表文件错误！', mtError, [mbOk], 0) = mrOk then
           CardForm.Close;
     end;
end;

end.