frm_login.frm

一套适用于超市

VERSION 5.00
Begin VB.Form Frm_Login 
   BackColor       =   &H00FF80FF&
   Caption         =   "系统登录"
   ClientHeight    =   2355
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   4125
   ControlBox      =   0   'False
   LinkTopic       =   "Form1"
   ScaleHeight     =   2355
   ScaleWidth      =   4125
   StartUpPosition =   2  '屏幕中心
   Begin VB.Frame Frame1 
      BackColor       =   &H00FF80FF&
      Height          =   1575
      Left            =   120
      TabIndex        =   4
      Top             =   120
      Width           =   3855
      Begin VB.TextBox txtUser 
         BeginProperty Font 
            Name            =   "宋体"
            Size            =   10.5
            Charset         =   134
            Weight          =   400
            Underline       =   0   'False
            Italic          =   0   'False
            Strikethrough   =   0   'False
         EndProperty
         Height          =   375
         Left            =   1320
         TabIndex        =   0
         Top             =   240
         Width           =   2055
      End
      Begin VB.TextBox txtPwd 
         BeginProperty Font 
            Name            =   "宋体"
            Size            =   10.5
            Charset         =   134
            Weight          =   400
            Underline       =   0   'False
            Italic          =   0   'False
            Strikethrough   =   0   'False
         EndProperty
         Height          =   375
         IMEMode         =   3  'DISABLE
         Left            =   1320
         PasswordChar    =   "*"
         TabIndex        =   1
         Top             =   840
         Width           =   2055
      End
      Begin VB.Label Label1 
         AutoSize        =   -1  'True
         BackStyle       =   0  'Transparent
         Caption         =   "用户名："
         BeginProperty Font 
            Name            =   "宋体"
            Size            =   10.5
            Charset         =   134
            Weight          =   400
            Underline       =   0   'False
            Italic          =   0   'False
            Strikethrough   =   0   'False
         EndProperty
         Height          =   210
         Left            =   360
         TabIndex        =   6
         Top             =   360
         Width           =   840
      End
      Begin VB.Label Label2 
         AutoSize        =   -1  'True
         BackStyle       =   0  'Transparent
         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          =   210
         Left            =   480
         TabIndex        =   5
         Top             =   960
         Width           =   630
      End
   End
   Begin VB.CommandButton CmdExit 
      Caption         =   "退出"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   10.5
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   375
      Left            =   2520
      TabIndex        =   3
      Top             =   1800
      Width           =   975
   End
   Begin VB.CommandButton CmdOk 
      Caption         =   "登录"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   10.5
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   375
      Left            =   600
      TabIndex        =   2
      Top             =   1800
      Width           =   975
   End
End
Attribute VB_Name = "Frm_Login"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Dim n As Integer
Private Sub CmdExit_Click()
End
End Sub

Private Sub CmdOk_Click()
n = n + 1
Set rpwd = New Recordset
rpwd.Open "select * from 用户表 where [user]='" & txtUser.Text & "' and pwd ='" & txtPwd & "'", cs, adOpenKeyset, adLockPessimistic
If rpwd.RecordCount = 0 Then
   GoTo ll
Else
   Unload Me
  If rpwd.Fields("power") = "超级管理员" Then
   MDIForm1.StatusBar1.Panels(1).Text = "当前用户:" & rpwd.Fields("user")
   MDIForm1.StatusBar1.Panels(2).Text = "描述:超级管理员"
   MDIForm1.A.Enabled = True
   MDIForm1.B.Enabled = True
   MDIForm1.C.Enabled = True
   MDIForm1.D.Enabled = True
   MDIForm1.E.Enabled = True
   MDIForm1.F.Enabled = True
   MDIForm1.H.Enabled = True
  ElseIf rpwd.Fields("power") = "出库管理员" Then
   MDIForm1.StatusBar1.Panels(1).Text = "当前用户:" & rpwd.Fields("user")
   MDIForm1.StatusBar1.Panels(2).Text = "描述:出库管理员"
   MDIForm1.A1.Enabled = False
   MDIForm1.B.Enabled = False
   MDIForm1.C.Enabled = True
   MDIForm1.D.Enabled = False
   MDIForm1.E.Enabled = True
   MDIForm1.F.Enabled = True
   MDIForm1.H.Enabled = True
   ElseIf rpwd.Fields("power") = "库存管理员" Then
   MDIForm1.StatusBar1.Panels(1).Text = "当前用户:" & rpwd.Fields("user")
   MDIForm1.StatusBar1.Panels(2).Text = "描述:库存管理员"
   MDIForm1.A.Enabled = False
   MDIForm1.B.Enabled = False
   MDIForm1.C.Enabled = False
   MDIForm1.D.Enabled = True
   MDIForm1.E.Enabled = True
   MDIForm1.F.Enabled = True
   MDIForm1.H.Enabled = True
  ElseIf rpwd.Fields("power") = "入库管理员" Then
   MDIForm1.StatusBar1.Panels(1).Text = "当前用户:" & rpwd.Fields("user")
   MDIForm1.StatusBar1.Panels(2).Text = "描述:入库管理员"
   MDIForm1.A.Enabled = False
   MDIForm1.B.Enabled = True
   MDIForm1.C.Enabled = False
   MDIForm1.D.Enabled = False
   MDIForm1.E.Enabled = False
   MDIForm1.F.Enabled = True
   MDIForm1.H.Enabled = True
  End If
End If
Exit Sub
ll:
  MsgBox "密码错误,请重新输入！", 16, "操作提示"
  txtPwd.SetFocus
  txtPwd.SelStart = 0
  txtPwd.SelLength = Len(txtPwd.Text)
  If n >= 3 Then
     MsgBox "对不起，您无权访问本系统！", 48, "操作提示"
     End
  End If
End Sub




Private Sub Form_Load()
  Call LoginAccess
End Sub
Private Sub txtPwd_KeyPress(KeyAscii As Integer)
If KeyAscii = 13 Then CmdOk_Click
End Sub


Private Sub txtUser_KeyPress(KeyAscii As Integer)
If KeyAscii = 13 Then txtPwd.SetFocus
End Sub