frmlogin.frm

这是本人用vb配合access数据库开发的一个部门人事管理的一个小软件的源码。

VERSION 5.00
Begin VB.Form frmLogin 
   BorderStyle     =   3  'Fixed Dialog
   Caption         =   "Login"
   ClientHeight    =   2985
   ClientLeft      =   30
   ClientTop       =   330
   ClientWidth     =   4665
   LinkTopic       =   "Form1"
   MaxButton       =   0   'False
   MinButton       =   0   'False
   ScaleHeight     =   2985
   ScaleWidth      =   4665
   ShowInTaskbar   =   0   'False
   StartUpPosition =   2  'CenterScreen
   Tag             =   "Login"
   Begin VB.CommandButton cmdCancel 
      Cancel          =   -1  'True
      Caption         =   "Cancel"
      Height          =   360
      Left            =   2640
      TabIndex        =   4
      Tag             =   "Cancel"
      Top             =   2160
      Width           =   1140
   End
   Begin VB.CommandButton cmdOK 
      Caption         =   "OK"
      Default         =   -1  'True
      Height          =   360
      Left            =   840
      TabIndex        =   3
      Tag             =   "OK"
      Top             =   2160
      Width           =   1140
   End
   Begin VB.TextBox txtPassword 
      Height          =   288
      IMEMode         =   3  'DISABLE
      Left            =   1548
      MaxLength       =   50
      PasswordChar    =   "*"
      TabIndex        =   2
      Top             =   1452
      Width           =   2325
   End
   Begin VB.TextBox txtUserName 
      Height          =   288
      Left            =   1548
      MaxLength       =   50
      TabIndex        =   1
      Top             =   1056
      Width           =   2325
   End
   Begin VB.Label Label1 
      BackColor       =   &H80000000&
      Caption         =   "  CO PL Management System"
      BeginProperty Font 
         Name            =   "Tahoma"
         Size            =   12
         Charset         =   0
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   &H80000001&
      Height          =   375
      Left            =   480
      TabIndex        =   6
      Top             =   240
      Width           =   3615
   End
   Begin VB.Label lblLabels 
      Caption         =   " Password"
      BeginProperty Font 
         Name            =   "Times New Roman"
         Size            =   9.75
         Charset         =   0
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   252
      Index           =   1
      Left            =   348
      TabIndex        =   0
      Tag             =   "&Password:"
      Top             =   1464
      Width           =   1080
   End
   Begin VB.Label lblLabels 
      Caption         =   "User Name:"
      BeginProperty Font 
         Name            =   "Times New Roman"
         Size            =   9.75
         Charset         =   0
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   252
      Index           =   0
      Left            =   348
      TabIndex        =   5
      Tag             =   "&User Name:"
      Top             =   1080
      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
Private Declare Function GetUserName Lib "advapi32.dll" Alias "GetUserNameA" (ByVal lpbuffer As String, nSize As Long) As Long


Public OK As Boolean
'记录确定次数
Dim miCount As Integer
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 = ""
   
    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
    
    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 UserTable 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 = ""
            End If
        End If
    End If
    
    miCount = miCount + 1
    If miCount = 3 Then
        Me.Hide
    End If
    Exit Sub
End Sub