unit1.pas

图书管理系统

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, DB, DBTables,Unit2,Unit3;

type
  TForm1 = class(TForm)
    Label1: TLabel;
    Table1: TTable;
    Edit1: TEdit;
    Edit2: TEdit;
    Label2: TLabel;
    Label3: TLabel;
    Label4: TLabel;
    Label5: TLabel;
    Label6: TLabel;
    Label7: TLabel;
    Label8: TLabel;
    procedure Button1Click(Sender: TObject);
    procedure FormCreate(Sender: TObject);
    procedure Label6Click(Sender: TObject);
    procedure Label7Click(Sender: TObject);
    procedure Label8Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
begin
table1.Active:=true;
table1.FindKey([edit1.Text]);
if (table1.FieldByName('用户名').AsString=edit1.Text)
and (table1.FieldByName('密码').AsString=edit2.Text)  then
begin
form2:=tform2.Create(self);
form2.Show;
form1.Edit1.Text:='';
form1.Edit2.Text:='';
end
else
begin
showmessage('密码输入错误!');
form1.Edit2.Text:='';
end;
end;
procedure TForm1.FormCreate(Sender: TObject);
begin
form1.Color:=clteal;
end;

procedure TForm1.Label6Click(Sender: TObject);
begin
form3:=tform3.Create(self);
form3.Show;
form3.Table1.Last;
form3.Table1.Append;
form3.DBEdit1.Text:='';
form3.DBEdit2.Text:='';
end;

procedure TForm1.Label7Click(Sender: TObject);
begin
close;
end;

procedure TForm1.Label8Click(Sender: TObject);
begin
table1.Active:=true;
table1.FindKey([edit1.Text]);
if (table1.FieldByName('用户名').AsString=edit1.Text)
and (table1.FieldByName('密码').AsString=edit2.Text)  then
begin
form2:=tform2.Create(self);
form2.Show;
form1.Edit1.Text:='';
form1.Edit2.Text:='';
end
else
begin
showmessage('密码输入错误!');
form1.Edit2.Text:='';
end;
end;

end.