frmlogin.frm

智能仓库管理系统

VERSION 5.00
Begin VB.Form FrmLogin 
   BorderStyle     =   3  'Fixed Dialog
   Caption         =   "仓储管理_登录"
   ClientHeight    =   2040
   ClientLeft      =   3390
   ClientTop       =   3480
   ClientWidth     =   4590
   ControlBox      =   0   'False
   ForeColor       =   &H80000008&
   Icon            =   "FrmLogin.frx":0000
   LinkTopic       =   "Form1"
   LockControls    =   -1  'True
   MaxButton       =   0   'False
   MinButton       =   0   'False
   ScaleHeight     =   2040
   ScaleWidth      =   4590
   ShowInTaskbar   =   0   'False
   StartUpPosition =   2  '屏幕中心
   Begin VB.Timer Timer1 
      Interval        =   1000
      Left            =   4110
      Top             =   1605
   End
   Begin VB.CommandButton cmdCancel 
      Caption         =   "取消"
      Height          =   408
      Left            =   2496
      TabIndex        =   5
      Top             =   1548
      Width           =   948
   End
   Begin VB.CommandButton cmdOk 
      Caption         =   "确定"
      Height          =   408
      Left            =   1104
      TabIndex        =   4
      Top             =   1548
      Width           =   948
   End
   Begin VB.TextBox txtPWD 
      BeginProperty Font 
         Name            =   "Symbol"
         Size            =   10.5
         Charset         =   2
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   300
      IMEMode         =   3  'DISABLE
      Left            =   1680
      PasswordChar    =   "*"
      TabIndex        =   3
      Top             =   972
      Width           =   2316
   End
   Begin VB.TextBox txtUser 
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   10.5
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   300
      Left            =   1680
      TabIndex        =   2
      Top             =   288
      Width           =   2316
   End
   Begin VB.Label Label2 
      BackStyle       =   0  'Transparent
      Caption         =   "密码 ："
      Height          =   276
      Left            =   912
      TabIndex        =   1
      Top             =   1068
      Width           =   984
   End
   Begin VB.Label Label1 
      BackStyle       =   0  'Transparent
      Caption         =   "用户名："
      Height          =   276
      Left            =   912
      TabIndex        =   0
      Top             =   348
      Width           =   984
   End
   Begin VB.Image Image2 
      Height          =   480
      Left            =   285
      Picture         =   "FrmLogin.frx":164A
      Top             =   870
      Width           =   480
   End
   Begin VB.Image Image1 
      Height          =   525
      Left            =   315
      Picture         =   "FrmLogin.frx":1F14
      Stretch         =   -1  'True
      Top             =   165
      Width           =   345
   End
End
Attribute VB_Name = "FrmLogin"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False

Private cnnDB As New ADODB.Connection
Private rs As New ADODB.Recordset
Dim ShowTime As Integer

Private Sub DBConnection()
    
    'cnnDB.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & gDBPath & ";Jet OLEDB:Database Password=czlxming;Persist Security Info=False"
    cnnDB.ConnectionString = "DSN=Freight"
    cnnDB.CommandTimeout = 15
    cnnDB.Open
End Sub
Private Sub cmdCancel_Click()
   If gLoginStatus = "SYS" Then
    Unload Me
   Else
       End
   End If
End Sub

Private Sub cmdOK_Click()
    
    If txtUser.Text = "" Then
        MsgBox "请输入用户名", vbExclamation + vbOKOnly, "提示"
        txtUser.SetFocus
        Exit Sub
    End If
    If txtPWD.Text = "" Then
        MsgBox "请输入密码", vbExclamation + vbOKOnly, "提示"
        txtPWD.SetFocus
        Exit Sub
    End If
    If Login(UCase(txtUser.Text), UCase(txtPWD.Text)) = True Then
        If gLoginStatus = "SYS" Then
            gLoginStatus = "True"
            gLogin = 0
            gUser = UCase(txtUser.Text)
            frmMain.MainBar.Panels(1).Text = gPurview & "：" & gUser
            Unload Me
        Else
            gLogin = 0
            gUser = UCase(txtUser.Text)
            frmMain.MainBar.Panels(1).Text = gPurview & "：" & gUser
            Me.MousePointer = vbHourglass
            Unload Me
        End If
    Else
        gLogin = gLogin + 1
        MsgBox "用户名或密码错误", vbCritical + vbOKOnly, "错误"
        txtUser.Text = ""
        txtPWD.Text = ""
        txtUser.SetFocus
    End If
    
    If gLogin >= 3 And gLoginStatus <> "SYS" Then
        End
    Else
      If gLogin >= 3 Then
         gLogin = 0
         Unload Me
      End If
    End If
End Sub

Public Function Login(mUser As String, mPWD As String) As Boolean
Login = False
   
    Set rs = New ADODB.Recordset
     rs.Open "select * from Login", cnnDB, adOpenKeyset, adLockOptimistic
    Do While Not rs.EOF
        If mUser = rs("USERNAME1") And mPWD = DeString(rs("PASSWORD1")) Then
         Login = True
         gPurview = rs("PURVIEW")
         Exit Do
        End If
        rs.MoveNext
    Loop
    rs.Close
End Function



Private Sub Form_Load()
 DBConnection
End Sub

Private Sub Form_Unload(Cancel As Integer)
    cnnDB.Close
    Set cnnDB = Nothing
End Sub

Private Sub Timer1_Timer()
 ShowTime = ShowTime + 1
  If ShowTime = 3 Then
    gStart = True '关闭展示窗口
    Timer1.Enabled = False
  End If
End Sub

Private Sub txtPWD_KeyPress(KeyAscii As Integer)
    If KeyAscii = 13 Then
      txtPWD.Text = UCase(txtPWD.Text)
      cmdOK_Click
    End If
End Sub



Private Sub txtUser_KeyPress(KeyAscii As Integer)
    If KeyAscii = 13 Then
        txtUser.Text = UCase(txtUser.Text)
        txtPWD.SetFocus
    End If
End Sub

Private Sub txtUser_LostFocus()
If txtUser.Text <> "" Then
  txtUser.Text = UCase(txtUser.Text)
 End If
End Sub