cad.frm

图书管理系统：分成图书管理模块和图书查询模块

VERSION 5.00
Begin VB.Form cad 
   BorderStyle     =   1  'Fixed Single
   Caption         =   "管理员身份验证"
   ClientHeight    =   2040
   ClientLeft      =   45
   ClientTop       =   330
   ClientWidth     =   3930
   Icon            =   "cad.frx":0000
   LinkTopic       =   "Form1"
   MaxButton       =   0   'False
   MinButton       =   0   'False
   ScaleHeight     =   2040
   ScaleWidth      =   3930
   StartUpPosition =   2  '屏幕中心
   Begin VB.Data Data1 
      Caption         =   "Data1"
      Connect         =   "Access"
      DatabaseName    =   "F:\vb程序1\vb程序1\V_Library.mdb"
      DefaultCursorType=   0  '缺省游标
      DefaultType     =   2  '使用 ODBC
      Exclusive       =   0   'False
      Height          =   285
      Left            =   720
      Options         =   0
      ReadOnly        =   0   'False
      RecordsetType   =   1  'Dynaset
      RecordSource    =   "管理员名单"
      Top             =   120
      Visible         =   0   'False
      Width           =   2535
   End
   Begin VB.CommandButton Command2 
      Caption         =   "取消"
      Height          =   375
      Left            =   2378
      TabIndex        =   5
      Top             =   1560
      Width           =   855
   End
   Begin VB.CommandButton Command1 
      Caption         =   "确定"
      Height          =   375
      Left            =   698
      TabIndex        =   4
      Top             =   1560
      Width           =   855
   End
   Begin VB.TextBox Text1 
      Height          =   270
      IMEMode         =   3  'DISABLE
      Left            =   1838
      PasswordChar    =   "*"
      TabIndex        =   3
      Top             =   1065
      Width           =   1215
   End
   Begin VB.ComboBox Combo1 
      Height          =   300
      Left            =   1838
      TabIndex        =   2
      Top             =   480
      Width           =   1215
   End
   Begin VB.Label Label2 
      Caption         =   "密  码"
      Height          =   255
      Left            =   878
      TabIndex        =   1
      Top             =   1080
      Width           =   735
   End
   Begin VB.Label Label1 
      Caption         =   "用户名"
      Height          =   255
      Left            =   878
      TabIndex        =   0
      Top             =   525
      Width           =   735
   End
End
Attribute VB_Name = "cad"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Private Sub Combo1_Change()
Dim getitem As String
Dim dresult As Integer
Dim deng As Integer
For deng = 0 To Combo1.ListCount - 1
    getitem = Left(Combo1.List(deng), Len(Combo1.Text))
    dresult = StrComp(Combo1.Text, getitem, 1)
    If dresult = 0 Then Combo1.ListIndex = deng: Exit Sub
Next deng
    
End Sub

Private Sub Combo1_Click()
Text1.SetFocus
End Sub

Private Sub Command1_Click()
Dim mystr As String
Dim response As String
Dim response1 As String
Data1.Recordset.MoveFirst
If Combo1.Text = "" Or Text1.Text = "" Then
   response1 = MsgBox("请将用户名和密码填写完整！", vbExclamation, "警告")
   Combo1.SetFocus
   Exit Sub
End If
mystr = "用户名" & "=" & "'" & Combo1.Text & "'"
Data1.Recordset.FindFirst mystr
If Trim(Data1.Recordset.Fields("密码")) = Trim(Text1.Text) Then
   Unload Me
   Load safrm
   adfrm.Show
Else
   response = MsgBox("密码错误！", vbExclamation, "警告")
   Text1.Text = ""
End If
End Sub

Private Sub Command2_Click()
Unload Me
Load choose
choose.Show
End Sub

Private Sub Form_Activate()
Data1.Recordset.MoveFirst
Do While Not Data1.Recordset.EOF
   If Data1.Recordset.Fields("权限").Value = "管理员" Then
       Combo1.AddItem (Data1.Recordset.Fields("用户名").Value)
    End If
    Data1.Recordset.MoveNext
Loop
End Sub

Private Sub Text1_KeyPress(KeyAscii As Integer)

If KeyAscii = Asc(vbCr) Then
   KeyAscii = 0
   Call Command1_Click
End If
End Sub