frmlogin.frm

本人自己编写的!!!!!看看这样做的怎么样

VERSION 5.00
Begin VB.Form frmlogin 
   BackColor       =   &H00FFFFFF&
   Caption         =   "Login"
   ClientHeight    =   6780
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   9255
   LinkTopic       =   "Form1"
   ScaleHeight     =   6780
   ScaleWidth      =   9255
   StartUpPosition =   3  '窗口缺省
   Begin VB.PictureBox 登录界面 
      BorderStyle     =   0  'None
      Height          =   6615
      Left            =   120
      Picture         =   "frmlogin.frx":0000
      ScaleHeight     =   6615
      ScaleWidth      =   9015
      TabIndex        =   0
      Top             =   120
      Width           =   9015
      Begin VB.CommandButton cmdCancel 
         BackColor       =   &H00004000&
         Caption         =   "退    出"
         BeginProperty Font 
            Name            =   "楷体_GB2312"
            Size            =   15.75
            Charset         =   134
            Weight          =   700
            Underline       =   0   'False
            Italic          =   0   'False
            Strikethrough   =   0   'False
         EndProperty
         Height          =   615
         Left            =   5040
         Style           =   1  'Graphical
         TabIndex        =   7
         Top             =   4920
         Width           =   1575
      End
      Begin VB.CommandButton cmdOK 
         BackColor       =   &H00004000&
         Caption         =   "登    录"
         BeginProperty Font 
            Name            =   "楷体_GB2312"
            Size            =   15.75
            Charset         =   134
            Weight          =   700
            Underline       =   0   'False
            Italic          =   0   'False
            Strikethrough   =   0   'False
         EndProperty
         Height          =   615
         Left            =   2640
         Style           =   1  'Graphical
         TabIndex        =   6
         Top             =   4920
         Width           =   1575
      End
      Begin VB.TextBox txtPassword 
         BackColor       =   &H00008000&
         Height          =   495
         Left            =   3240
         TabIndex        =   5
         Top             =   3480
         Width           =   2535
      End
      Begin VB.TextBox txtUserName 
         BackColor       =   &H00008000&
         Height          =   495
         Left            =   3240
         TabIndex        =   4
         Top             =   2520
         Width           =   2535
      End
      Begin VB.Label mm 
         BackStyle       =   0  'Transparent
         Caption         =   "密  码:"
         BeginProperty Font 
            Name            =   "宋体"
            Size            =   15.75
            Charset         =   134
            Weight          =   700
            Underline       =   0   'False
            Italic          =   0   'False
            Strikethrough   =   0   'False
         EndProperty
         ForeColor       =   &H00000000&
         Height          =   495
         Left            =   1800
         TabIndex        =   3
         Top             =   3600
         Width           =   1095
      End
      Begin VB.Label yhm 
         BackStyle       =   0  'Transparent
         Caption         =   "用户名:"
         BeginProperty Font 
            Name            =   "宋体"
            Size            =   15.75
            Charset         =   134
            Weight          =   700
            Underline       =   0   'False
            Italic          =   0   'False
            Strikethrough   =   0   'False
         EndProperty
         Height          =   495
         Left            =   1800
         TabIndex        =   2
         Top             =   2640
         Width           =   1095
      End
      Begin VB.Label Label1 
         BackStyle       =   0  'Transparent
         Caption         =   "  图书借阅管理系统"
         BeginProperty Font 
            Name            =   "黑体"
            Size            =   36
            Charset         =   134
            Weight          =   700
            Underline       =   0   'False
            Italic          =   0   'False
            Strikethrough   =   0   'False
         EndProperty
         ForeColor       =   &H00C00000&
         Height          =   975
         Left            =   1080
         TabIndex        =   1
         Top             =   480
         Width           =   7095
      End
   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

Private Sub cmdOK_Click()
   If txtPassword.Text = "" Then
       flag = 1
       Unload Me
    Else
       MsgBox "密码错误 ，请重试！"
       txtPassword.SetFocus
       txtPassword.SelStart = 0
       txtPassword.SelLength = Len(txtPassword.Text)
   End If
       
End Sub

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

Private Sub Label3_Click()

End Sub

Private Sub Timer1_Timer()
  If Label2.Left + Label2.Width > o Then
     Label2.Move Label2.Left - 20
  Else
     Label2.Left = Picture1.ScaleWidth
 End If
End Sub


Private Sub txtPassword_Change()
  If KeyAscii = 13 Then
    Command1.SetFocus
  End If
End Sub

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 txtUserName_Change()
 If KeyAscii = 13 Then
    Text2.SetFocus
  End If
End Sub