form0903.frm

VB实验教程源码

VERSION 5.00
Begin VB.Form Form1 
   Caption         =   "登录"
   ClientHeight    =   2325
   ClientLeft      =   60
   ClientTop       =   450
   ClientWidth     =   3195
   LinkTopic       =   "Form1"
   ScaleHeight     =   2325
   ScaleWidth      =   3195
   StartUpPosition =   3  '窗口缺省
   Begin VB.CommandButton Command2 
      Caption         =   "取消"
      Height          =   375
      Left            =   1800
      TabIndex        =   5
      Top             =   1680
      Width           =   975
   End
   Begin VB.CommandButton Command1 
      Caption         =   "确定"
      Height          =   375
      Left            =   360
      TabIndex        =   4
      Top             =   1680
      Width           =   975
   End
   Begin VB.TextBox Text2 
      Height          =   495
      IMEMode         =   3  'DISABLE
      Left            =   1440
      PasswordChar    =   "*"
      TabIndex        =   1
      Top             =   840
      Width           =   1215
   End
   Begin VB.TextBox Text1 
      Height          =   495
      Left            =   1440
      TabIndex        =   0
      Top             =   120
      Width           =   1215
   End
   Begin VB.Label Label2 
      Caption         =   "密码"
      Height          =   255
      Left            =   360
      TabIndex        =   3
      Top             =   960
      Width           =   975
   End
   Begin VB.Label Label1 
      Caption         =   "用户名"
      Height          =   255
      Left            =   360
      TabIndex        =   2
      Top             =   240
      Width           =   975
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit

Private Sub Text1_KeyPress(KeyAscii As Integer)
'在用户名文本框按键
    If KeyAscii < 65 Or KeyAscii > 122 Or (KeyAscii < 97 And KeyAscii > 90) Then
    '按键不是大小写字母
        KeyAscii = 0
        Text1.SetFocus
    End If
    If Len(Text1.Text) > 8 Then
    '超过8位
        MsgBox "用户名超过8位", vbOKOnly, "输入出错"
        KeyAscii = 0
        Text1.SetFocus
    End If
End Sub