frmlogin.frm

该系统是用VB开发的一个人事管理系统

VERSION 5.00
Begin VB.Form frmLogin 
   BackColor       =   &H00C0C0C0&
   BorderStyle     =   0  'None
   Caption         =   "登录"
   ClientHeight    =   2835
   ClientLeft      =   0
   ClientTop       =   30
   ClientWidth     =   5085
   Icon            =   "frmLogin.frx":0000
   LinkTopic       =   "Form1"
   MaxButton       =   0   'False
   MinButton       =   0   'False
   ScaleHeight     =   2835
   ScaleWidth      =   5085
   ShowInTaskbar   =   0   'False
   StartUpPosition =   2  '屏幕中心
   Begin VB.TextBox txtPassword 
      Height          =   270
      IMEMode         =   3  'DISABLE
      Left            =   1920
      PasswordChar    =   "*"
      TabIndex        =   1
      Top             =   1200
      Width           =   1695
   End
   Begin VB.TextBox txtUserName 
      Height          =   315
      Left            =   1920
      TabIndex        =   0
      Top             =   720
      Width           =   1695
   End
   Begin VB.CommandButton Command2 
      Cancel          =   -1  'True
      Caption         =   "取消(&C)"
      Height          =   375
      Left            =   2640
      TabIndex        =   3
      Top             =   2040
      Width           =   1455
   End
   Begin VB.CommandButton Command1 
      Caption         =   "确定(&O)"
      Default         =   -1  'True
      Height          =   375
      Left            =   840
      TabIndex        =   2
      Top             =   2040
      Width           =   1455
   End
   Begin VB.Label Label6 
      BackStyle       =   0  'Transparent
      Height          =   255
      Left            =   240
      TabIndex        =   7
      Top             =   2520
      Width           =   2895
   End
   Begin VB.Label Label5 
      BackStyle       =   0  'Transparent
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   10.5
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   375
      Left            =   3120
      TabIndex        =   6
      Top             =   1680
      Width           =   1095
   End
   Begin VB.Label Label3 
      BackStyle       =   0  'Transparent
      Caption         =   "密码:"
      Height          =   255
      Left            =   840
      TabIndex        =   5
      Top             =   1200
      Width           =   735
   End
   Begin VB.Label Label2 
      BackStyle       =   0  'Transparent
      Caption         =   "用户名:"
      Height          =   255
      Left            =   840
      TabIndex        =   4
      Top             =   720
      Width           =   735
   End
End
Attribute VB_Name = "frmLogin"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit
Public ok As Boolean
Dim MyValue
Dim LOGINNO As Byte '登录次数





Private Sub Command1_Click()
    Dim txtSQL As String
    Dim mrc As ADODB.Recordset
    Dim MsgText As String
    '变量定义 txtSQL是用来存放SQL语句，MsgText存放返回信息
    Me.MousePointer = 11
    UserName = ""
    If Trim(txtUserName.Text = "") Then
    '判断用户名输入是否为空
        MsgBox "没有这个用户，请重新输入用户名！", vbOKOnly + vbExclamation, "警告"
        LOGINNO = LOGINNO + 1
        txtUserName.SetFocus
    Else
        txtSQL = "select * from Manager where username = '" & txtUserName.Text & "'"
        '对所输入的用户名进行查询
        Set mrc = ExecuteSQL(txtSQL, MsgText)
        'MsgBox MsgText
        If mrc.EOF = True Then
            MsgBox "没有这个用户，请重新输入用户名!", vbOKOnly + vbExclamation, "警告"
            LOGINNO = LOGINNO + 1
            txtUserName.SetFocus
        Else
            If Trim(mrc.Fields(1)) = Trim(txtPassword.Text) Then
            '判断密码输入正确性
                ok = True
                Level = mrc.Fields(2)
                Me.Hide
               ' UserName = Trim(txtUserName.Text)
               ' PWD = Trim(txtPassword.Text)
                '记录用户名和密码到全局变量
                '获取用户的级别
                mrc.Close
            Else
                MsgBox "输入密码不正确，请重新输入！", vbOKOnly + vbExclamation, "警告"
                txtPassword.SetFocus
                txtPassword.Text = ""
                LOGINNO = LOGINNO + 1
            End If
        End If
    End If
    If LOGINNO > 3 Then
        MsgBox "对不起，您不能使用该系统！", 64, "登录失败"
        Me.Hide
        Exit Sub
    End If
    Me.MousePointer = 1
End Sub

Private Sub Command2_Click()
    ok = False
    Me.Hide
End Sub

Private Sub Form_Load()
    ok = True
    LOGINNO = 0
End Sub