retbook.frm

图书管理系统

VERSION 5.00
Begin VB.Form retbook 
   Caption         =   "图示归还"
   ClientHeight    =   4515
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   5910
   BeginProperty Font 
      Name            =   "宋体"
      Size            =   9.75
      Charset         =   0
      Weight          =   400
      Underline       =   0   'False
      Italic          =   0   'False
      Strikethrough   =   0   'False
   EndProperty
   LinkTopic       =   "Form1"
   ScaleHeight     =   4515
   ScaleWidth      =   5910
   StartUpPosition =   2  'CenterScreen
   Begin VB.CommandButton cmdret 
      Caption         =   "返回"
      Height          =   495
      Left            =   2400
      TabIndex        =   12
      Top             =   3840
      Width           =   855
   End
   Begin VB.Frame frame2 
      Caption         =   "还书人信息"
      Height          =   1575
      Left            =   240
      TabIndex        =   3
      Top             =   1920
      Width           =   5415
      Begin VB.TextBox txtborcan 
         Height          =   375
         Left            =   2760
         TabIndex        =   14
         Top             =   960
         Width           =   855
      End
      Begin VB.TextBox txtfine 
         Height          =   375
         Left            =   4560
         TabIndex        =   11
         Top             =   960
         Width           =   735
      End
      Begin VB.TextBox txtboralready 
         Height          =   375
         Left            =   960
         TabIndex        =   9
         Top             =   960
         Width           =   855
      End
      Begin VB.TextBox txtreadername 
         Height          =   375
         Left            =   3480
         TabIndex        =   7
         Top             =   240
         Width           =   1575
      End
      Begin VB.TextBox txtreaderid 
         Height          =   375
         Left            =   1200
         TabIndex        =   5
         Top             =   240
         Width           =   1455
      End
      Begin VB.Label Label5 
         Caption         =   "可借书数"
         Height          =   255
         Left            =   1920
         TabIndex        =   13
         Top             =   1080
         Width           =   975
      End
      Begin VB.Label Label4 
         Caption         =   "罚金累计"
         Height          =   375
         Left            =   3720
         TabIndex        =   10
         Top             =   1080
         Width           =   1215
      End
      Begin VB.Label Label3 
         Alignment       =   2  'Center
         Caption         =   "已借书数"
         Height          =   255
         Left            =   120
         TabIndex        =   8
         Top             =   1080
         Width           =   855
      End
      Begin VB.Label Label2 
         Alignment       =   2  'Center
         Caption         =   "姓名"
         Height          =   255
         Left            =   2880
         TabIndex        =   6
         Top             =   360
         Width           =   615
      End
      Begin VB.Label Label1 
         Alignment       =   2  'Center
         Caption         =   "借书证号"
         Height          =   255
         Left            =   120
         TabIndex        =   4
         Top             =   360
         Width           =   1095
      End
   End
   Begin VB.Frame Frame1 
      Caption         =   "输入图书编号"
      Height          =   1215
      Left            =   480
      TabIndex        =   0
      Top             =   360
      Width           =   4455
      Begin VB.CommandButton cmdok 
         Caption         =   "确定"
         Height          =   495
         Left            =   3240
         TabIndex        =   2
         Top             =   480
         Width           =   735
      End
      Begin VB.TextBox txtbookid 
         Height          =   495
         Left            =   360
         TabIndex        =   1
         Top             =   480
         Width           =   2415
      End
   End
End
Attribute VB_Name = "retbook"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Public readerid As String
Public bookid As String

Private Sub cmdok_Click()
  Dim txtsql, msgtext As String
  Dim bors As ADODB.Recordset
  Dim bs As ADODB.Recordset
  Dim rs As ADODB.Recordset
  Dim bookeds As ADODB.Recordset
  bookid = Trim(txtbookid.Text)
  If bookid <> "" Then
     txtsql = "select * from borrowinfo where bookid='" & bookid & "'"
     Set bors = ExecuteSQL(txtsql, msgtext)
     If bors.EOF = True Then
        MsgBox "该书不是从本图书管所借，不能归还！", vbOKOnly + vbExclamation, "警告"
     Else
        readerid = Trim(bors.Fields("readerid"))
        txtsql = "select * from books where bookid='" & bookid & "'"
        Set bs = ExecuteSQL(txtsql, msgtext)
        bs.Fields("borrow") = "n"
        bs.Update
        If bs.Fields("booked") = "y" Then
           txtsql = "select * from booked where bookid='" & bookid & "'"
           Set bookeds = ExecuteSQL(txtsql, msgtext)
           While (bookeds.EOF = False)
              bookeds.Fields("retdate") = Date
              bookeds.MoveNext
           Wend
        End If
        txtsql = "select * from readers where readerid='" & readerid & "'"
        Set rs = ExecuteSQL(txtsql, msgtext)
        rs.Fields("boralready") = rs.Fields("boralready") - 1
        rs.Update
        txtreaderid.Text = readerid
        txtreadername.Text = rs.Fields("readername")
        txtboralready.Text = rs.Fields("boralready")
        txtborcan.Text = rs.Fields("booknum") - rs.Fields("boralready")
        If (Date - bors.Fields("borrowdate") < bors.Fields("bookdays")) Then
            txtfine.Text = rs.Fields("fine")
        Else
            txtfine.Text = (Date - bors.Fields("borrowdate") - bors.Fields("bookdays")) * 0.2
            rs.Fields("fine") = txtfine.Text
            rs.Update
            MsgBox "超期" & Date - bors.Fields("borrowdate") - bors.Fields("bookdays") & "天，罚款" & txtfine.Text & "元！", vbOKOnly + vbExclamation, "警告"
        End If
        bors.Delete
        bors.Update
        bors.Close
        bs.Close
        rs.Close
        txtreaderid.Enabled = False
        txtreadername.Enabled = False
        txtboralready.Enabled = False
        txtborcan.Enabled = False
        txtfine.Enabled = False
     End If
  Else
     MsgBox "借书证号不能为空，请输入！", vbOKOnly + vbExclamation, "警告"
  End If
End Sub

Private Sub cmdret_Click()
  Unload Me
End Sub

Private Sub Form_Load()
  readerid = ""
End Sub