pass.frm

一个用VB编写的小型图书管理系统

VERSION 5.00
Begin VB.Form pass 
   Caption         =   "图书馆管理系统"
   ClientHeight    =   3735
   ClientLeft      =   60
   ClientTop       =   450
   ClientWidth     =   5910
   LinkTopic       =   "Form1"
   MaxButton       =   0   'False
   MinButton       =   0   'False
   ScaleHeight     =   3735
   ScaleWidth      =   5910
   StartUpPosition =   2  '屏幕中心
   Begin VB.Frame Frame1 
      Caption         =   "用户登陆"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   10.5
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   1695
      Left            =   840
      TabIndex        =   7
      Top             =   1080
      Width           =   4335
      Begin VB.TextBox Text1 
         BeginProperty Font 
            Name            =   "宋体"
            Size            =   9
            Charset         =   134
            Weight          =   700
            Underline       =   0   'False
            Italic          =   0   'False
            Strikethrough   =   0   'False
         EndProperty
         Height          =   375
         IMEMode         =   3  'DISABLE
         Index           =   1
         Left            =   2160
         PasswordChar    =   "*"
         TabIndex        =   4
         Top             =   840
         Width           =   1455
      End
      Begin VB.TextBox Text1 
         BeginProperty Font 
            Name            =   "宋体"
            Size            =   9
            Charset         =   134
            Weight          =   700
            Underline       =   0   'False
            Italic          =   0   'False
            Strikethrough   =   0   'False
         EndProperty
         Height          =   375
         Index           =   0
         Left            =   2160
         TabIndex        =   2
         Top             =   240
         Width           =   1455
      End
      Begin VB.Label Label3 
         Caption         =   "口  令"
         BeginProperty Font 
            Name            =   "宋体"
            Size            =   9
            Charset         =   134
            Weight          =   700
            Underline       =   0   'False
            Italic          =   0   'False
            Strikethrough   =   0   'False
         EndProperty
         Height          =   375
         Left            =   600
         TabIndex        =   3
         Top             =   960
         Width           =   975
      End
      Begin VB.Label Label2 
         Caption         =   "用户名"
         BeginProperty Font 
            Name            =   "宋体"
            Size            =   9
            Charset         =   134
            Weight          =   700
            Underline       =   0   'False
            Italic          =   0   'False
            Strikethrough   =   0   'False
         EndProperty
         Height          =   375
         Left            =   600
         TabIndex        =   1
         Top             =   360
         Width           =   1095
      End
   End
   Begin VB.CommandButton Command2 
      Caption         =   "取消"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   10.5
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   495
      Left            =   3480
      TabIndex        =   6
      Top             =   3000
      Width           =   1215
   End
   Begin VB.CommandButton Command1 
      Caption         =   "确定"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   10.5
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   495
      Left            =   1080
      TabIndex        =   5
      Top             =   2985
      Width           =   1215
   End
   Begin VB.Label Label1 
      Caption         =   "图书馆管理系统"
      BeginProperty Font 
         Name            =   "楷体_GB2312"
         Size            =   24
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   615
      Left            =   1080
      TabIndex        =   0
      Top             =   240
      Width           =   3495
   End
End
Attribute VB_Name = "pass"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Public n As Integer
Private Sub Command1_Click()
  Dim mrc As ADODB.Recordset
  txtsql = "select * from oper where 用户名= '" & Trim$(Text1(0).Text) & "'" & " and 口令= '" & Trim$(Text1(1).Text) + "'"
  Set mrc = exesql(txtsql)
  If mrc.RecordCount = 0 Then
    n = n + 1
    If n < 3 Then
      MsgBox "没有这个用户，继续登录", vbOKOnly + vbExclamation, "信息提示"
      Text1(0).Text = ""
      Text1(1).Text = ""
      Text1(0).SetFocus
    Else
      MsgBox "已登录失败三次，退出系统", vbOKOnly + vbExclamation, "信息提示"
      mrc.Close
      Unload Me
    End If
    Else
      userlever = Trim(mrc.Fields("级别"))
      mrc.Close
      Unload Me
      menu.Show
    End If
End Sub

Private Sub Command2_Click()
Unload Me
End Sub

Private Sub Form_Load()
n = 0
End Sub