frmlogin.frm

这是一个航空管理系统用vb和sql的做的. 是 VB数据库系统开发实例导航,中的一个实例

VERSION 5.00
Begin VB.Form frmLogin 
   BorderStyle     =   3  'Fixed Dialog
   Caption         =   "Login"
   ClientHeight    =   2904
   ClientLeft      =   36
   ClientTop       =   336
   ClientWidth     =   3900
   LinkTopic       =   "Form1"
   MaxButton       =   0   'False
   MinButton       =   0   'False
   ScaleHeight     =   2904
   ScaleWidth      =   3900
   ShowInTaskbar   =   0   'False
   StartUpPosition =   2  'CenterScreen
   Tag             =   "Login"
   Begin VB.CommandButton cmdCancel 
      Cancel          =   -1  'True
      Caption         =   "Cancel"
      Height          =   360
      Left            =   2100
      TabIndex        =   5
      Tag             =   "Cancel"
      Top             =   2304
      Width           =   1140
   End
   Begin VB.CommandButton cmdOK 
      Caption         =   "OK"
      Default         =   -1  'True
      Height          =   360
      Left            =   492
      TabIndex        =   4
      Tag             =   "OK"
      Top             =   2304
      Width           =   1140
   End
   Begin VB.TextBox txtPassword 
      Height          =   288
      IMEMode         =   3  'DISABLE
      Left            =   1548
      PasswordChar    =   "*"
      TabIndex        =   1
      Top             =   1812
      Width           =   2064
   End
   Begin VB.TextBox txtUserName 
      Height          =   288
      Left            =   1548
      TabIndex        =   3
      Top             =   1416
      Width           =   2064
   End
   Begin VB.Label Label1 
      Caption         =   "大唐航空公司管理信息系统"
      BeginProperty Font 
         Name            =   "华文彩云"
         Size            =   24
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   &H80000001&
      Height          =   972
      Left            =   480
      TabIndex        =   6
      Top             =   120
      Width           =   3132
   End
   Begin VB.Label lblLabels 
      Caption         =   "密  码:"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         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             =   1824
      Width           =   1080
   End
   Begin VB.Label lblLabels 
      Caption         =   "用户名:"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   0
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   252
      Index           =   0
      Left            =   348
      TabIndex        =   2
      Tag             =   "&User Name:"
      Top             =   1440
      Width           =   1080
   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


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
End Sub



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


Private Sub cmdOK_Click()
    'ToDo: create test for correct password
    'check for correct password
    If txtPassword.Text = "" Then
        OK = True
        Me.Hide
    Else
        MsgBox "Invalid Password, try again!", , "Login"
        txtPassword.SetFocus
        txtPassword.SelStart = 0
        txtPassword.SelLength = Len(txtPassword.Text)
    End If
End Sub