user_wei.~pas

品质管理系统：delphi+sql实现了制造企业在生产过程中对产品质量的控制

unit user_wei;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, DBTables, DB, ExtCtrls, DBCtrls, StdCtrls, Mask, Grids, DBGrids,
  Buttons;

type
  Tuser_we = class(TForm)
    Label1: TLabel;
    Label2: TLabel;
    Label4: TLabel;
    SpeedButton1: TSpeedButton;
    SpeedButton2: TSpeedButton;
    SpeedButton3: TSpeedButton;
    SpeedButton4: TSpeedButton;
    DBGrid1: TDBGrid;
    DBEdit1: TDBEdit;
    DBEdit2: TDBEdit;
    DBEdit3: TDBEdit;
    DBNavigator1: TDBNavigator;
    Table1: TTable;
    DataSource1: TDataSource;
    Query1: TQuery;
    procedure FormClose(Sender: TObject; var Action: TCloseAction);
    procedure SpeedButton1Click(Sender: TObject);
    procedure DBEdit1KeyPress(Sender: TObject; var Key: Char);
    procedure DBEdit2KeyPress(Sender: TObject; var Key: Char);
    procedure DBEdit3KeyPress(Sender: TObject; var Key: Char);
    procedure SpeedButton2Click(Sender: TObject);
    procedure SpeedButton3Click(Sender: TObject);
    procedure SpeedButton4Click(Sender: TObject);
    procedure Table1AfterScroll(DataSet: TDataSet);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  user_we: Tuser_we;

implementation

{$R *.dfm}

procedure Tuser_we.FormClose(Sender: TObject; var Action: TCloseAction);
begin
action:=cafree;
end;

procedure Tuser_we.SpeedButton1Click(Sender: TObject);
begin
close;
end;

procedure Tuser_we.DBEdit1KeyPress(Sender: TObject; var Key: Char);
begin
if key=chr(13) then
begin
query1.Active:=false;
query1.SQL.Clear;
query1.SQL.Add('select username from us where username=:kk');
query1.ParamByName('kk').AsString:=dbedit1.Text;
query1.Prepare;
query1.Active:=true;
if query1.FieldByName('username').AsString=dbedit1.Text then
 begin
showmessage('ノめ絪腹ぃ