frmlogin.frm

商业企业进销存管理系统

VERSION 5.00
Begin VB.Form frmLogin 
   BorderStyle     =   3  'Fixed Dialog
   Caption         =   "登录"
   ClientHeight    =   4335
   ClientLeft      =   30
   ClientTop       =   330
   ClientWidth     =   8985
   LinkTopic       =   "Form1"
   MaxButton       =   0   'False
   MinButton       =   0   'False
   Picture         =   "frmLogin.frx":0000
   ScaleHeight     =   4335
   ScaleWidth      =   8985
   ShowInTaskbar   =   0   'False
   StartUpPosition =   2  '屏幕中心
   Tag             =   "Login"
   Begin VB.CommandButton cmdCancel 
      Appearance      =   0  'Flat
      BackColor       =   &H80000009&
      Cancel          =   -1  'True
      Caption         =   "退出"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   10.5
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   300
      Left            =   2880
      TabIndex        =   5
      Tag             =   "Cancel"
      Top             =   3360
      Width           =   600
   End
   Begin VB.CommandButton cmdOK 
      Appearance      =   0  'Flat
      Caption         =   "进入"
      Default         =   -1  'True
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   10.5
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   300
      Left            =   2880
      TabIndex        =   4
      Tag             =   "OK"
      Top             =   2760
      Width           =   600
   End
   Begin VB.TextBox txtPassword 
      Appearance      =   0  'Flat
      BorderStyle     =   0  'None
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   10.5
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   &H00C00000&
      Height          =   315
      IMEMode         =   3  'DISABLE
      Left            =   1920
      PasswordChar    =   "*"
      TabIndex        =   1
      Top             =   3360
      Width           =   840
   End
   Begin VB.TextBox txtUserName 
      Appearance      =   0  'Flat
      BorderStyle     =   0  'None
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   10.5
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   &H00C00000&
      Height          =   315
      Left            =   1920
      TabIndex        =   3
      Top             =   2760
      Width           =   840
   End
   Begin VB.Label lblLabels 
      Appearance      =   0  'Flat
      BackColor       =   &H80000005&
      BackStyle       =   0  'Transparent
      Caption         =   "密  码:"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   10.5
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   &H000000C0&
      Height          =   300
      Index           =   1
      Left            =   1080
      TabIndex        =   0
      Tag             =   "&Password:"
      Top             =   3360
      Width           =   840
   End
   Begin VB.Label lblLabels 
      Appearance      =   0  'Flat
      BackColor       =   &H80000005&
      BackStyle       =   0  'Transparent
      Caption         =   "用户名:"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   10.5
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   &H000000C0&
      Height          =   300
      Index           =   0
      Left            =   1080
      TabIndex        =   2
      Tag             =   "&User Name:"
      Top             =   2760
      Width           =   840
   End
End
Attribute VB_Name = "frmLogin"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Private Declare Function GetUserName Lib "advapi32.dll" Alias "GetUserNameA" (ByVal lpbuffer As String, nSize As Long) As Long

'记录确定次数
Dim miCount As Integer
Public OK As Boolean


Private Sub Form_Load()
    Dim sBuffer As String
    Dim lSize As Long
    sBuffer = Space$(255)
    lSize = Len(sBuffer)
    Call GetUserName(sBuffer, lSize)
    If lSize > 0 Then
        txtUserName.Text = Left$(sBuffer, lSize)
    Else
        txtUserName.Text = vbNullString
    End If
    OK = False
    miCount = 0
End Sub

Private Sub cmdCancel_Click()
    OK = False
    Me.Hide
End Sub

Private Sub cmdOK_Click()
    Dim txtSQL As String
    Dim mrc As ADODB.Recordset
    Dim MsgText As String
    'ToDo: create test for correct password
    'check for correct password  ok
    
    username = ""
    If Trim(txtUserName.Text = "") Then
        MsgBox "没有这个用户，请重新输入用户名！", vbOKOnly + vbExclamation, "警告"
        
        txtUserName.SetFocus
    Else
        txtSQL = "select * from user_Info where user_ID = '" & txtUserName.Text & "'"
        Set mrc = ExecuteSQL(txtSQL, 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"
            txtUserName.SetFocus
        Else
            If Trim(mrc.Fields(1)) = Trim(txtPassword.Text) Then
                OK = True
                mrc.Close
                Me.Hide
                username = Trim(txtUserName.Text)
            Else
                MsgBox "输入密码不正确，请重新输入！", vbOKOnly + vbExclamation, "警告"
                txtPassword.SetFocus
                txtPassword.Text = ""
                miCount = miCount + 1
                If miCount >= 3 Then
                    Me.Hide
                    MsgBox "密码输入已超过规定提示次数，Bye-bye！", vbOKOnly + vbExclamation, "警告"
                End If

            End If
        End If
    End If
    
End Sub