formlogin.frm

图书管理系统的登录界面、忘记密码、注册界面的文件包

VERSION 5.00
Begin VB.Form Formlogin 
   Caption         =   "用户登录"
   ClientHeight    =   3090
   ClientLeft      =   5460
   ClientTop       =   4350
   ClientWidth     =   4380
   ControlBox      =   0   'False
   LinkTopic       =   "Form1"
   MaxButton       =   0   'False
   MinButton       =   0   'False
   Moveable        =   0   'False
   ScaleHeight     =   3090
   ScaleWidth      =   4380
   StartUpPosition =   2  '屏幕中心
   Begin VB.CommandButton Command2 
      Caption         =   "忘记密码"
      Height          =   375
      Left            =   1680
      TabIndex        =   9
      Top             =   2280
      Width           =   1095
   End
   Begin VB.Timer Timer2 
      Enabled         =   0   'False
      Interval        =   1000
      Left            =   3840
      Top             =   120
   End
   Begin VB.Timer Timer1 
      Enabled         =   0   'False
      Interval        =   1000
      Left            =   120
      Top             =   120
   End
   Begin VB.CommandButton Command3 
      Caption         =   "退出"
      Height          =   375
      Left            =   3000
      TabIndex        =   5
      Top             =   2280
      Width           =   1095
   End
   Begin VB.CommandButton Command1 
      Caption         =   "注册/登录"
      Height          =   375
      Left            =   360
      TabIndex        =   4
      Top             =   2280
      Width           =   1095
   End
   Begin VB.TextBox Text2 
      BeginProperty Font 
         Name            =   "隶书"
         Size            =   18
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   480
      IMEMode         =   3  'DISABLE
      Left            =   2160
      PasswordChar    =   "*"
      TabIndex        =   2
      Top             =   1440
      Width           =   1965
   End
   Begin VB.TextBox Text1 
      BeginProperty Font 
         Name            =   "隶书"
         Size            =   18
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   480
      Left            =   2160
      TabIndex        =   1
      Top             =   840
      Width           =   1965
   End
   Begin VB.Label Label2 
      Caption         =   "Password"
      BeginProperty Font 
         Name            =   "隶书"
         Size            =   18
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   &H00FF0000&
      Height          =   375
      Left            =   360
      TabIndex        =   3
      Top             =   1440
      Width           =   1500
   End
   Begin VB.Label Label1 
      Caption         =   "Username"
      BeginProperty Font 
         Name            =   "隶书"
         Size            =   18
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   &H00FF0000&
      Height          =   375
      Left            =   360
      TabIndex        =   0
      Top             =   840
      Width           =   1500
   End
   Begin VB.Label Label4 
      BeginProperty Font 
         Name            =   "隶书"
         Size            =   21.75
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   &H000000C0&
      Height          =   375
      Left            =   1200
      TabIndex        =   7
      Top             =   1560
      Visible         =   0   'False
      Width           =   2655
   End
   Begin VB.Label Label3 
      BeginProperty Font 
         Name            =   "隶书"
         Size            =   21.75
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   &H000000C0&
      Height          =   375
      Left            =   1320
      TabIndex        =   6
      Top             =   960
      Visible         =   0   'False
      Width           =   1815
   End
   Begin VB.Label Label5 
      BeginProperty Font 
         Name            =   "隶书"
         Size            =   21.75
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   &H000000C0&
      Height          =   375
      Left            =   600
      TabIndex        =   8
      Top             =   1560
      Visible         =   0   'False
      Width           =   495
   End
End
Attribute VB_Name = "Formlogin"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Dim Chance As Integer
Dim SQL As String
Dim PwMD5 As String
Dim c1 As New Class1
Dim x As Integer

Private Sub Command1_Click()
If Text1.Text = "" Then
    Unload Me
    FormReg.Show
Else
  If Text2.Text = "" Then
    MsgBox "请输入密码"
    Text2.SetFocus
  Else
    PwMD5 = c1.DigestStrToHexStr(Text2.Text)
    DataEnvironment1.Commands(2).CommandType = adCmdText
    SQL = "select * from usr where name='" & Text1.Text & "'"
    DataEnvironment1.rsCommand2.Open SQL
    If DataEnvironment1.Recordsets(2).EOF Then
       MsgBox "用户名错误！", , "系统登录"
       DataEnvironment1.Recordsets(2).Close
       Text1.Text = ""
       Text2.Text = ""
    Else
      Chance = Chance + 1
      If PwMD5 = DataEnvironment1.Recordsets(2).Fields(2) Then
         QuanXian = DataEnvironment1.Recordsets(2).Fields(8)
         DataEnvironment1.Recordsets(2).Close
         Timer1.Enabled = True
      Else
       If Chance < 3 Then
         MsgBox "密码错误，你还有" & 3 - Chance & "次机会", , "系统登录"
         DataEnvironment1.Recordsets(2).Close
         Text2.Text = ""
         Text2.SetFocus
       Else
         MsgBox "密码错误，登录失败！", , "系统登录"
         DataEnvironment1.Recordsets(2).Close
         Timer2.Enabled = True
       End If
      End If
    End If
  End If
End If
End Sub

Private Sub Command2_Click()
Unload Me
FormForget.Show
End Sub

Private Sub Command3_Click()
Unload Me
End Sub

Private Sub Text1_KeyPress(KeyAscii As Integer)
If KeyAscii = 13 Then Text2.SetFocus
End Sub

Private Sub Text2_KeyPress(KeyAscii As Integer)
If KeyAscii = 13 Then Call Command1_Click
End Sub

Private Sub Timer2_Timer()
Label1.Visible = False
Label2.Visible = False
Text1.Visible = False
Text2.Visible = False
Command1.Visible = False
Command2.Visible = False
Label3.Visible = True
Label4.Visible = True
Label5.Visible = True
Label5.Caption = 3 - x
Label3.Caption = "登录失败"
Label4.Caption = "秒后退出登录"
If x = 3 Then
  Unload Me
End If
x = x + 1
End Sub

Private Sub Timer1_Timer()
Label1.Visible = False
Label2.Visible = False
Text1.Visible = False
Text2.Visible = False
Command1.Visible = False
Command2.Visible = False
Label3.Visible = True
Label4.Visible = True
Label5.Visible = True
Label5.Caption = 3 - x
Label3.Caption = "登录成功"
Label4.Caption = "秒后进入系统"
If x = 3 Then
  UserName = Text1.Text
  Unload Me
  FormIndex.Show
End If
x = x + 1
End Sub