pass.frm

很好的图书管理系统

VERSION 5.00
Begin VB.Form pass 
   Caption         =   "图书管理系统"
   ClientHeight    =   3825
   ClientLeft      =   60
   ClientTop       =   435
   ClientWidth     =   4680
   LinkTopic       =   "form1"
   MaxButton       =   0   'False
   MinButton       =   0   'False
   ScaleHeight     =   3825
   ScaleWidth      =   4680
   StartUpPosition =   2  '屏幕中心
   Begin VB.CommandButton cmd_cancel 
      Caption         =   "取消"
      Height          =   375
      Left            =   2520
      TabIndex        =   5
      Top             =   3000
      Width           =   855
   End
   Begin VB.CommandButton cmd_ok 
      Caption         =   "确定"
      Height          =   375
      Left            =   1200
      TabIndex        =   4
      Top             =   3000
      Width           =   855
   End
   Begin VB.Frame Frame1 
      Caption         =   "用户登录"
      Height          =   1335
      Left            =   600
      TabIndex        =   1
      Top             =   1200
      Width           =   3615
      Begin VB.TextBox txtpwd 
         Height          =   375
         IMEMode         =   3  'DISABLE
         Left            =   1440
         PasswordChar    =   "*"
         TabIndex        =   3
         Top             =   840
         Width           =   1935
      End
      Begin VB.TextBox txtname 
         Height          =   375
         Left            =   1440
         TabIndex        =   2
         Top             =   360
         Width           =   1935
      End
      Begin VB.Label Label3 
         Caption         =   " 口  令"
         BeginProperty Font 
            Name            =   "宋体"
            Size            =   12
            Charset         =   134
            Weight          =   400
            Underline       =   0   'False
            Italic          =   0   'False
            Strikethrough   =   0   'False
         EndProperty
         Height          =   375
         Left            =   360
         TabIndex        =   7
         Top             =   840
         Width           =   855
      End
      Begin VB.Label Label2 
         Caption         =   "  用户名"
         BeginProperty Font 
            Name            =   "宋体"
            Size            =   12
            Charset         =   134
            Weight          =   400
            Underline       =   0   'False
            Italic          =   0   'False
            Strikethrough   =   0   'False
         EndProperty
         Height          =   375
         Left            =   240
         TabIndex        =   6
         Top             =   360
         Width           =   975
      End
   End
   Begin VB.Label label1 
      BackColor       =   &H80000014&
      Caption         =   "   图书管理系统"
      BeginProperty Font 
         Name            =   "微软雅黑"
         Size            =   14.25
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   495
      Left            =   960
      TabIndex        =   0
      Top             =   360
      Width           =   2415
   End
End
Attribute VB_Name = "pass"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Private n As Integer

Private Sub Form_Load()
n = 0
End Sub
Private Sub cmd_ok_click()
Dim rstpass As ADODB.Recordset
txtsql = "select * from oper where 用户名='" & Trim$(txtname.Text) & "'" & "and 口令 = '" & Trim$(txtpwd.Text) + "'"
Set rstpass = exesql(txtsql)
If rstpass.EOF = True Then
n = n + 1
If n < 3 Then
MsgBox "用户名或口令错户，继续登录", vbOKOnly + vbExclamation, "信息提示"
rstpass.Close
txtname.Text = ""
txtpwd.Text = ""
txtname.SetFocus
Else
MsgBox "已登录失败三次，退出系统", vbOKOnly + vbExclamation, "信息提示"
rstpass.Close
Unload Me
End If
Else
userlevel = Trim(rstpass.Fields("级别"))
rstpass.Close
Unload Me
menu.Show
End If
End Sub

Private Sub cmd_cancel_click()
Unload Me
End Sub

Private Sub txtname_keypress(keyascii As Integer)
Call endata(keyascii)
End Sub

Private Sub txtpwd_keypress(keyascii As Integer)
Call endata(keyascii)
End Sub