login_frm.frm

一个完整的图书管理系统

VERSION 5.00
Begin VB.Form login 
   BorderStyle     =   0  'None
   Caption         =   "Form1"
   ClientHeight    =   4500
   ClientLeft      =   0
   ClientTop       =   0
   ClientWidth     =   6000
   KeyPreview      =   -1  'True
   LinkTopic       =   "Form1"
   MaxButton       =   0   'False
   MinButton       =   0   'False
   Picture         =   "login_frm.frx":0000
   ScaleHeight     =   4500
   ScaleWidth      =   6000
   ShowInTaskbar   =   0   'False
   StartUpPosition =   2  '屏幕中心
   Begin VB.TextBox txtServer 
      BackColor       =   &H00FFFF00&
      BorderStyle     =   0  'None
      Enabled         =   0   'False
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   15.75
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   &H80000001&
      Height          =   435
      Left            =   2880
      TabIndex        =   0
      Text            =   "lab2"
      Top             =   2450
      Width           =   2025
   End
   Begin VB.TextBox txtPassword 
      BackColor       =   &H00FFFF00&
      BorderStyle     =   0  'None
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   15.75
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   &H80000001&
      Height          =   435
      IMEMode         =   3  'DISABLE
      Left            =   2880
      PasswordChar    =   "*"
      TabIndex        =   2
      Top             =   3700
      Width           =   2025
   End
   Begin VB.TextBox txtOperID 
      BackColor       =   &H00FFFF00&
      BorderStyle     =   0  'None
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   15.75
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   &H80000001&
      Height          =   435
      Left            =   2900
      TabIndex        =   1
      Text            =   "admin"
      Top             =   3090
      Width           =   2025
   End
   Begin VB.Label Label1 
      BackStyle       =   0  'Transparent
      Height          =   255
      Left            =   0
      TabIndex        =   5
      Top             =   0
      Width           =   5535
   End
   Begin VB.Label lblClose 
      BackStyle       =   0  'Transparent
      Height          =   225
      Left            =   5760
      MouseIcon       =   "login_frm.frx":4732
      MousePointer    =   99  'Custom
      TabIndex        =   4
      ToolTipText     =   "关闭"
      Top             =   0
      Width           =   225
   End
   Begin VB.Label lblOK 
      Alignment       =   2  'Center
      BackStyle       =   0  'Transparent
      Caption         =   "OK"
      BeginProperty Font 
         Name            =   "Century Gothic"
         Size            =   14.25
         Charset         =   0
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   &H00FFFF00&
      Height          =   480
      Left            =   5055
      MouseIcon       =   "login_frm.frx":4B74
      MousePointer    =   99  'Custom
      TabIndex        =   3
      Top             =   3750
      Width           =   510
   End
End
Attribute VB_Name = "login"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit
Public rsUser As ADODB.Recordset

Private Sub Form_KeyPress(KeyAscii As Integer)
    If KeyAscii = 27 Then Unload Me '按ESC键退出
End Sub

Private Sub lblClose_Click()
    Unload Me
End Sub

Private Sub lblOK_Click()
On Error GoTo err1:
    '初始化并打开公共连接
   Set cnn = New clsCon
    cnn.connect txtServer.Text
    
    '初始化并打开操作员记录集
    Set rsUser = New ADODB.Recordset
    rsUser.Open "select * from operator", cnn.c, adOpenKeyset, adLockOptimistic
    
    '操作员身份验证
    While Not rsUser.EOF
        If rsUser.Fields("OperID") = txtOperID.Text And rsUser.Fields("PassWord") = passEncrypt_Decrypt(txtPassword.Text) Then
            right = rsUser.Fields("rights") ' 记录操作员权限
            operatorid = rsUser.Fields("OperID") '记录操作员ID
            main.Show
            Unload login
            Exit Sub
        End If
        rsUser.MoveNext
    Wend
        MsgBox "用户名和密码不匹配，请检查！", vbExclamation
        txtOperID.SetFocus
err1:
End Sub

Private Sub lblOK_MouseDown(Button As Integer, Shift As Integer, X As Single, Y As Single)
    lblOK.ForeColor = &H80000001
End Sub

Private Sub lblOK_MouseUp(Button As Integer, Shift As Integer, X As Single, Y As Single)
    lblOK.ForeColor = &HFFFF00
End Sub