【正文】 // setTxtDisable(。return 1。pWnd=GetDlgItem(IDC_EDITDays)。pWnd=GetDlgItem(IDC_EDITReturnDate)。pWnd=GetDlgItem(IDC_EDITBorrowDate)。pWnd=GetDlgItem(IDC_EDITReaderName)。return 1。pWnd=GetDlgItem(IDC_EDITBook_ID)。m_ReturnDate=。m_Days=0。m_Book_ID=。}return 1。}catch(CDBException e){AfxMessageBox(數(shù)據(jù)庫執(zhí)行出錯)。(m_strsql)。)。m_strsql=m_strsql+,39。m_strsql=m_strsql+,39。m_strsql=m_strsql+,39。}m_strsql=INSERT INTO HISTORY (READER_ID,BOOK_ID,BORROW_DATE,RETURN_DATE) VALUES (39。if(!(_T(library))){AfxMessageBox(數(shù)據(jù)庫執(zhí)行出錯)。}}int CReturnBookDlg::Insert_History(){CDatabase mdb。}catch(CDBException e){AfxMessageBox(數(shù)據(jù)庫執(zhí)行出錯)。()。m_strsql = m_strsql + 39。 WHERE READER_ID=39。m_strsql = UPDATE READER SET FLAG_BORROW=39。}try{()。if(!(_T(Library))){AfxMessageBox(數(shù)據(jù)庫打開出錯)。+(%Y,%B %d)+39。,%f,%d,(m_Days*),m_Days)。(insert into fine(Reader_ID,amount,days,fine_date) values( \39。CTime m_CurrentTime。}int CReturnBookDlg::Insert_Fine(){CDatabase mdb。pWndSetFocus()。::MessageBox(thism_hWnd,該書號信息不存在！ ,警告,MB_OK)。elseCDialog::OnClose()。elseCDialog::OnClose()。是否繼續(xù)處理還書流程？,m_Days)。rs=QryBorrow()。CWnd *pWnd。}else{return 0。}()。Insert_History()。result=1。UpdateData(false)。if (m_ReturnDate_tmpm_Current_Time){m_TimeSpan_tmp=CTime::GetCurrentTime()m_ReturnDate_tmp。m_ReturnDate_tmp=+m_TimeSpan_tmp。if (()!=0) {m_ReaderName= 。return 1。+m_Book_ID+39。if (strcmp(m_Book_ID,)==0) return 0。CTimeSpan m_TimeSpan_tmp(30,24,59,59)。CString m_strtmp。代碼說明：實現(xiàn)還書功能的代碼如下：int CReturnBookDlg::QryBorrow(){int result。 // return TRUE unless you set the focus to a control // EXCEPTION: OCX Property Pages should return FALSE}167。}BOOL CLendOutDlg::OnInitDialog() {CDialog::OnInitDialog()。AfxMessageBox(操作成功！ )。return。}try{(mSqlStr)。if (!(_T(Library))){AfxMessageBox(無法打開數(shù)據(jù)庫！)。)。mSqlStr = mSqlStr + m_strUserID。// mSqlStr = mSqlStr + 39。mSqlStr = mSqlStr + 39。,39。mSqlStr = mSqlStr + m_strReaderID。// mSqlStr = INSERT INTO BORROW (READER_ID, BOOK_ID, BORROW_DATE, B_CLERK_ID) VALUES(39。CString m_strUserID。CMainFrame *pWnd。return。}}else{AfxMessageBox(無此書！)。()。}if (!()){if ( == Y){m_bCanLendOut = TRUE。if(!(AFX_DB_USE_DEFAULT_TYPE, mSqlStr)){AfxMessageBox(數(shù)據(jù)表打開錯誤！)。 + m_strBookID。return。}}()。}// Add some code to determine the num of book which this reader borrowed.m_bCanBorrow = TRUE。AfxMessageBox(數(shù)據(jù)表打開錯誤!)。mSqlStr = mSqlStr + 39。if (!()){if ( == Y){mSqlStr = SELECT * FROM BORROW WHERE READER_ID= 39。 = + 39。} = READER_ID=39。// if (!(AFX_DB_USE_DEFAULT_TYPE, mSqlStr))if (!(AFX_DB_USE_DEFAULT_TYPE)){AfxMessageBox(數(shù)據(jù)表打開錯誤!)。// mSqlStr = SELECT FLAG_BORROW,READER_ID FROM READER。// mSqlStr = SELECT * FROM READER WHERE READER_ID=39。CString mSqlStr。m_bCanBorrow = FALSE。BOOL m_bCanBorrow。 圖書借閱管理模塊的實現(xiàn)圖 圖書借閱管理模塊界面流程說明：首先進入借閱模塊后，選擇讀者編碼，選擇書籍編碼，以完成讀者借閱。進入模塊點擊刪除按鈕，然后點擊要刪除的一條圖書類型信息記錄，再點擊確定即可完成刪除操作。進入模塊點擊添加按鈕，在字段信息輸入框中添加相應的圖書類型信息，點擊確定即可完成添加操作。流程說明：圖書類型設置模塊組要包括圖書類型信息添加，圖書類型信息修改，圖書類型信息刪除。}167。pWndEnableWindow(TRUE)。pWndEnableWindow(TRUE)。pWndEnableWindow(FALSE)。pWndEnableWindow(FALSE)。pWndEnableWindow(FALSE)。pWndEnableWindow(TRUE)。elsepWndEnableWindow(FALSE)。pWnd = GetDlgItem(IDC_READER_ID)。if (m_bEdit){pWnd = GetDlgItem(IDC_READER_NAME)。return TRUE。SetButtonState()。if (!(AFX_DB_USE_DEFAULT_TYPE))AfxMessageBox(數(shù)據(jù)打開失??！)。// TODO: Add extra initialization herem_bAdd = FALSE。return TRUE。pWnd = GetDlgItem(IDC_CANCEL_REC)。pWnd = GetDlgItem(IDC_SAVE)。pWnd = GetDlgItem(IDC_ENQUERY)。}pWnd = GetDlgItem(IDC_NEW)。pWnd = GetDlgItem(IDC_DELETE)。}else{pWnd = GetDlgItem(IDC_EDIT)。pWnd = GetDlgItem(IDC_DELETE)。 ()){pWnd = GetDlgItem(IDC_EDIT)。}if (() amp。pWnd = GetDlgItem(IDC_LAST)。}else{pWnd = GetDlgItem(IDC_NEXT)。pWnd = GetDlgItem(IDC_LAST)。}if (()){pWnd = GetDlgItem(IDC_NEXT)。pWnd = GetDlgItem(IDC_PRIOR)。}else{pWnd = GetDlgItem(IDC_FIRST)。pWnd = GetDlgItem(IDC_PRIOR)。}if (()){pWnd = GetDlgItem(IDC_FIRST)。pWndEnableWindow(TRUE)。pWndEnableWindow(TRUE)。pWndEnableWindow(FALSE)。pWndEnableWindow(FALSE)。pWndEnableWindow(FALSE)。pWndEnableWindow(FALSE)。pWndEnableWindow(FALSE)。pWndEnableWindow(FALSE)。pWndEnableWindow(FALSE)。pWndEnableWindow(FALSE)。return TRUE。pWnd = GetDlgItem(IDC_CANCEL_REC)。pWnd = GetDlgItem(IDC_SAVE)。pWnd = GetDlgItem(IDC_DELETE)。pWnd = GetDlgItem(IDC_ENQUERY)。pWnd = GetDlgItem(IDC_EDIT)。pWnd = GetDlgItem(IDC_NEW)。pWnd = GetDlgItem(IDC_LAST)。pWnd = GetDlgItem(IDC_PRIOR)。pWnd = GetDlgItem(IDC_NEXT)。if(!()){pWnd = GetDlgItem(IDC_FIRST)。return TRUE。m_strIDCard = 。}}m_strReaderID = 。}else{if (()){()。m_strReaderName = 。amp。SetButtonState()。}}()。 + m_strReaderNameQ。 = + 39。}if (!()){if (mAll){ = + AND NAME=39。 = + 39。if (!()){ = READER_ID=39。return。DisplayRecord()。 ()){ = 。if (() amp。pWndSetFocus()。CWnd *pWnd。SetButtonState()。SetButtonState()。}void CReaderMDlg::OnDelete() {// TODO: Add your control notification handler code here()。SetButtonState()。m_bEdit = FALSE。SetTextState()。DisplayRecord()。m_bAdd = FALSE。()。 = m_strReaderID。} = m_strIDCard。}if (m_bAdd){()。if (() || () || ()){AfxMessageBox(請輸入相應數(shù)據(jù)！)。SetButtonState()。}}void CReaderMDlg::OnPrior() {// TODO: Add your control notification handler code hereif(!()){()。DisplayRecord()。pWndSetFocus()。CWnd *pWnd。SetButtonState()。m_bEdit = TRUE。m_strIDCard = 。}}void CReaderMDlg::OnNew() {// TODO: Add your control notification handler code herem_strReaderID = 。DisplayRecord()。SetButtonState()。}void CReaderMDlg::OnFirst() {// TODO: Add your control notification handler code hereif(!()){()。進入