frmlogin.frm

很好用的通用库存管理程序

VERSION 5.00
Begin VB.Form frmLogin 
   BorderStyle     =   1  'Fixed Single
   Caption         =   "登录"
   ClientHeight    =   1740
   ClientLeft      =   2835
   ClientTop       =   3480
   ClientWidth     =   3330
   ControlBox      =   0   'False
   LinkTopic       =   "Form1"
   MaxButton       =   0   'False
   MinButton       =   0   'False
   ScaleHeight     =   1028.049
   ScaleMode       =   0  'User
   ScaleWidth      =   3126.69
   Begin VB.ComboBox Combo1 
      Height          =   300
      Left            =   1080
      TabIndex        =   4
      Top             =   120
      Width           =   1935
   End
   Begin VB.CommandButton cmdOK 
      Caption         =   "确定"
      Default         =   -1  'True
      Height          =   390
      Left            =   480
      TabIndex        =   2
      Top             =   1200
      Width           =   900
   End
   Begin VB.CommandButton cmdCancel 
      Cancel          =   -1  'True
      Caption         =   "取消"
      Height          =   390
      Left            =   1920
      TabIndex        =   3
      Top             =   1200
      Width           =   900
   End
   Begin VB.TextBox txtPassword 
      Height          =   270
      IMEMode         =   3  'DISABLE
      Left            =   1080
      MaxLength       =   8
      PasswordChar    =   "*"
      TabIndex        =   1
      Top             =   675
      Width           =   1935
   End
   Begin VB.Label lblLabels 
      Caption         =   "用户:"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   10.5
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   255
      Index           =   0
      Left            =   240
      TabIndex        =   5
      Top             =   240
      Width           =   720
   End
   Begin VB.Label lblLabels 
      Caption         =   "密码:"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   10.5
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   255
      Index           =   1
      Left            =   240
      TabIndex        =   0
      Top             =   720
      Width           =   720
   End
End
Attribute VB_Name = "frmLogin"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit
Private Sub cmdCancel_Click()
  End
End Sub

Private Sub cmdOK_Click()
    '检查正确的密码
    If Combo1.Text = "" Then
     MsgBox "请输入用户名", , "警告"
     Exit Sub
    End If
    If txtPassword.Text = "" Then
     MsgBox "请输入密码", , "警告"
     Exit Sub
    End If
    
      sSql = "SELECT 姓名,密码 FROM 员工表 where 姓名 ='" & Combo1.Text & "'"
      Rs.Open sSql, db, adOpenKeyset, adLockOptimistic, adCmdText
     If Rs.EOF Then
      MsgBox "对不起，没有此用户", , "警告"
      Rs.Close
      Exit Sub
     End If
     If Trim(txtPassword.Text) <> Trim(Rs!密码) Then
        MsgBox "对不起，密码错误 ！", , "警告"
      Rs.Close
      Exit Sub
     End If
     Rs.Close
     Unload Me
 
'    If Combo1.Text = "管理员" Then
'
'    Static num As Integer
'    If txtPassword = "lhystar" Then
'          Unload Me
'    Else
'        num = num + 1
'        MsgBox "无效的密码，请重试!", , "登录"
'        txtPassword.SetFocus
'        SendKeys "{Home}+{End}"
'    End If
'    If num = 3 Then Unload Me
'  Else
'            Unload Me
'End If
End Sub

Private Sub Combo1_Click()
If Combo1.Text = "管理员" Then
  txtPassword.Enabled = True
  txtPassword.SetFocus
 Else
  txtPassword.Enabled = False
  End If
  
End Sub
Private Sub Form_Load()
'Combo1.AddItem "用户"
'Combo1.AddItem "管理员"
Me.Top = MDIFrmMain.Height / 2 - Me.Height / 2 - 1000
Me.Left = MDIFrmMain.Width / 2 - Me.Width / 2
Combo1.Text = "管理员"
Set Rs = New Recordset
Set_Init
Combo1.Text = "管理员"
End Sub
Private Sub Set_Init()
Dim i As Integer
 On Error GoTo DataErr
  
  sSql = "SELECT 姓名,密码 FROM 员工表"
 Rs.Open sSql, db, adOpenKeyset, adLockOptimistic, adCmdText
 Combo1.Clear
Do While Not Rs.EOF
 Combo1.AddItem Rs.Fields(0)
 Rs.MoveNext
 Loop
Rs.Close

  Exit Sub
DataErr:
     MsgBox Err.Description
End Sub