frmlogin.frm

关于工业设备型号数量库存价格等信息的管理系统的课程设计

VERSION 5.00
Begin VB.Form frmLogin 
   BorderStyle     =   3  'Fixed Dialog
   Caption         =   "登录"
   ClientHeight    =   2910
   ClientLeft      =   2835
   ClientTop       =   3480
   ClientWidth     =   5925
   LinkTopic       =   "Form1"
   MaxButton       =   0   'False
   MinButton       =   0   'False
   ScaleHeight     =   1719.324
   ScaleMode       =   0  'User
   ScaleWidth      =   5563.254
   ShowInTaskbar   =   0   'False
   StartUpPosition =   2  '屏幕中心
   Begin VB.TextBox txtUserName 
      Height          =   345
      Left            =   2370
      TabIndex        =   1
      Top             =   1215
      Width           =   2325
   End
   Begin VB.CommandButton cmdOK 
      Caption         =   "确定"
      Default         =   -1  'True
      Height          =   390
      Left            =   1200
      TabIndex        =   4
      Top             =   2220
      Width           =   1140
   End
   Begin VB.CommandButton cmdCancel 
      Cancel          =   -1  'True
      Caption         =   "取消"
      Height          =   390
      Left            =   3720
      TabIndex        =   5
      Top             =   2160
      Width           =   1140
   End
   Begin VB.TextBox txtPassword 
      Height          =   345
      IMEMode         =   3  'DISABLE
      Left            =   2370
      PasswordChar    =   "*"
      TabIndex        =   3
      Top             =   1605
      Width           =   2325
   End
   Begin VB.Label Label1 
      AutoSize        =   -1  'True
      Caption         =   "设备管理信息系统"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   15.75
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   315
      Left            =   1560
      TabIndex        =   6
      Top             =   300
      Width           =   2640
   End
   Begin VB.Label lblLabels 
      Caption         =   "用户名称(&U):"
      Height          =   270
      Index           =   0
      Left            =   1080
      TabIndex        =   0
      Top             =   1230
      Width           =   1170
   End
   Begin VB.Label lblLabels 
      Caption         =   "密码(&P):"
      Height          =   270
      Index           =   1
      Left            =   1020
      TabIndex        =   2
      Top             =   1620
      Width           =   1080
   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 LoginSucceeded As Boolean

'Private Sub cmdCancel_Click()
    '设置全局变量为 false
    '不提示失败的登录
   ' LoginSucceeded = False
   ' Me.Hide
'End Sub

Private Sub cmdOK_Click()
    
    Dim strPwd As String
    Dim rsPwd As ADODB.Recordset
    Dim strLogin As String
    
    strLogin = Trim(txtUserName.Text)
    strPwd = Trim(txtPassword.Text)
    
    If Len(strLogin) = 0 Then
        MsgBox "用户名不能为空,请输入用户名"
        txtUserName.SetFocus
        Exit Sub
    End If
    
    If Len(strPwd) = 0 Then
        MsgBox "密码不能为空,请输入正确的密码"
        txtPassword.SetFocus
        Exit Sub
    End If
    
    Set rsPwd = gConn.Execute("SELECT pwd FROM tblUser WHERE login='" & Replace(strLogin, "'", "''") & "'")
    
    If rsPwd.EOF Then
        MsgBox "用户名不正确,请重新输入!"
    ElseIf strPwd = rsPwd("pwd").value Then
        '将代码放在这里传递
        '成功到 calling 函数
        '设置全局变量时最容易的
        LoginSucceeded = True
        Me.Hide
    Else
        MsgBox "无效的密码，请重试!", , "登录"
        txtPassword.SetFocus
        SendKeys "{Home}+{End}"
    End If
    
    rsPwd.Close
    Set rsPwd = Nothing
        
End Sub