adoobjdlg.cpp

难得的数据库基础及应用程序

// ADOObjDlg.cpp : implementation file
//

#include "stdafx.h"
#include "ADOObj.h"
#include "ADOObjDlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About

class CAboutDlg : public CDialog
{
public:
	CAboutDlg();

// Dialog Data
	//{{AFX_DATA(CAboutDlg)
	enum { IDD = IDD_ABOUTBOX };
	//}}AFX_DATA

	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CAboutDlg)
	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
	//}}AFX_VIRTUAL

// Implementation
protected:
	//{{AFX_MSG(CAboutDlg)
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
	//{{AFX_DATA_INIT(CAboutDlg)
	//}}AFX_DATA_INIT
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CAboutDlg)
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
	//{{AFX_MSG_MAP(CAboutDlg)
		// No message handlers
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CADOObjDlg dialog

CADOObjDlg::CADOObjDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CADOObjDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CADOObjDlg)
	m_strStuNo = _T("");
	m_strName = _T("");
	m_strSex = _T("");
	m_strClass = _T("");
	m_strPhone = _T("");
	m_strMemo = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
	lCurRecordNo = 0L;
	lMaxRecordNo = 0l;
	lOperator = 0L;
}

void CADOObjDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CADOObjDlg)
	DDX_Control(pDX, IDC_CANCEL, m_ctrlCancel);
	DDX_Control(pDX, IDC_SAVE, m_ctrlSave);
	DDX_Control(pDX, IDC_EDIT, m_ctrlEdit);
	DDX_Control(pDX, IDC_DELETE, m_ctrlDelete);
	DDX_Control(pDX, IDC_ADD, m_ctrlAdd);
	DDX_Control(pDX, IDC_PREV, m_ctrlPrev);
	DDX_Control(pDX, IDC_NEXT, m_ctrlNext);
	DDX_Control(pDX, IDC_LAST, m_ctrlLast);
	DDX_Control(pDX, IDC_FIRST, m_ctrlFirst);
	DDX_Text(pDX, IDC_EDIT1, m_strStuNo);
	DDX_Text(pDX, IDC_EDIT2, m_strName);
	DDX_Text(pDX, IDC_EDIT3, m_strSex);
	DDX_Text(pDX, IDC_EDIT4, m_strClass);
	DDX_Text(pDX, IDC_EDIT5, m_strPhone);
	DDX_Text(pDX, IDC_EDIT6, m_strMemo);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CADOObjDlg, CDialog)
	//{{AFX_MSG_MAP(CADOObjDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_FIRST, OnFirst)
	ON_BN_CLICKED(IDC_PREV, OnPrev)
	ON_BN_CLICKED(IDC_NEXT, OnNext)
	ON_BN_CLICKED(IDC_LAST, OnLast)
	ON_BN_CLICKED(IDC_ADD, OnAdd)
	ON_BN_CLICKED(IDC_EDIT, OnEdit)
	ON_BN_CLICKED(IDC_DELETE, OnDelete)
	ON_BN_CLICKED(IDC_SAVE, OnSave)
	ON_BN_CLICKED(IDC_CANCEL, OnCancelSave)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CADOObjDlg message handlers

BOOL CADOObjDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// Add "About..." menu item to system menu.

	// IDM_ABOUTBOX must be in the system command range.
	ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
	ASSERT(IDM_ABOUTBOX < 0xF000);

	CMenu* pSysMenu = GetSystemMenu(FALSE);
	if (pSysMenu != NULL)
	{
		CString strAboutMenu;
		strAboutMenu.LoadString(IDS_ABOUTBOX);
		if (!strAboutMenu.IsEmpty())
		{
			pSysMenu->AppendMenu(MF_SEPARATOR);
			pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
		}
	}

	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's main window is not a dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	
	// TODO: Add extra initialization here
	adoConn.Open("DSN=Student;UID=;PWD=;");
	adoRs.Open("SELECT * FROM Student", &adoConn);
	lCurRecordNo = adoRs.GetRecordNo();
	lMaxRecordNo = adoRs.GetRecordCount();
	if (lCurRecordNo <= lMaxRecordNo)
	{
		ListRecord();
	}
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CADOObjDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else
	{
		CDialog::OnSysCommand(nID, lParam);
	}
}

// If you add a minimize button to your dialog, you will need the code below
//  to draw the icon.  For MFC applications using the document/view model,
//  this is automatically done for you by the framework.

void CADOObjDlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

		// Center icon in client rectangle
		int cxIcon = GetSystemMetrics(SM_CXICON);
		int cyIcon = GetSystemMetrics(SM_CYICON);
		CRect rect;
		GetClientRect(&rect);
		int x = (rect.Width() - cxIcon + 1) / 2;
		int y = (rect.Height() - cyIcon + 1) / 2;

		// Draw the icon
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialog::OnPaint();
	}
}

// The system calls this to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CADOObjDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CADOObjDlg::OnFirst() 
{
	// TODO: Add your control notification handler code here
	adoRs.MoveFirst();
	lCurRecordNo = adoRs.GetRecordNo();
	ListRecord();

	m_ctrlFirst.EnableWindow(FALSE);
	m_ctrlPrev.EnableWindow(FALSE);
	m_ctrlNext.EnableWindow(TRUE);
	m_ctrlLast.EnableWindow(TRUE);
}

void CADOObjDlg::OnPrev() 
{
	// TODO: Add your control notification handler code here
	adoRs.MovePrev();
	lCurRecordNo = adoRs.GetRecordNo();
	ListRecord();

	m_ctrlFirst.EnableWindow(TRUE);
	m_ctrlPrev.EnableWindow(TRUE);
	m_ctrlNext.EnableWindow(TRUE);
	m_ctrlLast.EnableWindow(TRUE);
	if (lCurRecordNo <= 1)
	{
		m_ctrlFirst.EnableWindow(FALSE);
		m_ctrlPrev.EnableWindow(FALSE);
	}
}

void CADOObjDlg::OnNext() 
{
	// TODO: Add your control notification handler code here
	adoRs.MoveNext();
	lCurRecordNo = adoRs.GetRecordNo();
	ListRecord();

	m_ctrlFirst.EnableWindow(TRUE);
	m_ctrlPrev.EnableWindow(TRUE);
	m_ctrlNext.EnableWindow(TRUE);
	m_ctrlLast.EnableWindow(TRUE);
	if (lCurRecordNo >= lMaxRecordNo)
	{
		m_ctrlNext.EnableWindow(FALSE);
		m_ctrlLast.EnableWindow(FALSE);
	}
}

void CADOObjDlg::OnLast() 
{
	// TODO: Add your control notification handler code here
	adoRs.MoveLast();
	lCurRecordNo = adoRs.GetRecordNo();
	ListRecord();

	m_ctrlFirst.EnableWindow(TRUE);
	m_ctrlPrev.EnableWindow(TRUE);
	m_ctrlNext.EnableWindow(FALSE);
	m_ctrlLast.EnableWindow(FALSE);
}

void CADOObjDlg::OnAdd() 
{
	// TODO: Add your control notification handler code here
	m_strStuNo = _T("");
	m_strName = _T("");
	m_strSex = _T("");
	m_strClass = _T("");
	m_strPhone = _T("");
	m_strMemo = _T("");
	UpdateData(FALSE);

	m_ctrlFirst.EnableWindow(FALSE);
	m_ctrlPrev.EnableWindow(FALSE);
	m_ctrlNext.EnableWindow(FALSE);
	m_ctrlLast.EnableWindow(FALSE);

	m_ctrlAdd.EnableWindow(FALSE);
	m_ctrlEdit.EnableWindow(FALSE);
	m_ctrlDelete.EnableWindow(FALSE);
	m_ctrlSave.EnableWindow(TRUE);
	m_ctrlCancel.EnableWindow(TRUE);

	lOperator = 1;
}

void CADOObjDlg::OnEdit() 
{
	// TODO: Add your control notification handler code here
	m_ctrlFirst.EnableWindow(FALSE);
	m_ctrlPrev.EnableWindow(FALSE);
	m_ctrlNext.EnableWindow(FALSE);
	m_ctrlLast.EnableWindow(FALSE);

	m_ctrlAdd.EnableWindow(FALSE);
	m_ctrlEdit.EnableWindow(FALSE);
	m_ctrlDelete.EnableWindow(FALSE);
	m_ctrlSave.EnableWindow(TRUE);
	m_ctrlCancel.EnableWindow(TRUE);

	lOperator = 2;
}

void CADOObjDlg::OnDelete() 
{
	// TODO: Add your control notification handler code here
	adoRs.Delete();
	ListRecord();
	lMaxRecordNo = adoRs.GetRecordCount();
}

void CADOObjDlg::OnSave() 
{
	// TODO: Add your control notification handler code here
	if (lOperator == 0)
		return;

	UpdateData(TRUE);
	if (lOperator == 1)
		adoRs.AddNew();

	adoRs("No", m_strStuNo);
	adoRs("Name", m_strName);
	adoRs("Sex", m_strSex);
	adoRs("Class", m_strClass);
	adoRs("Phone", m_strPhone);
	adoRs("Memo", m_strMemo);
	adoRs.Update();

	if (lOperator == 1)
		lMaxRecordNo = adoRs.GetRecordCount();

	m_ctrlFirst.EnableWindow(TRUE);
	m_ctrlPrev.EnableWindow(TRUE);
	m_ctrlNext.EnableWindow(TRUE);
	m_ctrlLast.EnableWindow(TRUE);

	m_ctrlAdd.EnableWindow(TRUE);
	m_ctrlEdit.EnableWindow(TRUE);
	m_ctrlDelete.EnableWindow(TRUE);
	m_ctrlSave.EnableWindow(FALSE);
	m_ctrlCancel.EnableWindow(FALSE);

	lOperator = 0;
}

void CADOObjDlg::ListRecord()
{
	m_strStuNo = (char *)_bstr_t(adoRs("No"));
	m_strName = (char *)_bstr_t(adoRs("Name"));
	m_strSex = (char *)_bstr_t(adoRs("Sex"));
	m_strClass = (char *)_bstr_t(adoRs("Class"));
	m_strPhone = (char *)_bstr_t(adoRs("Phone"));
	m_strMemo = (char *)_bstr_t(adoRs("Memo"));

	UpdateData(FALSE);
}

void CADOObjDlg::OnCancelSave() 
{
	// TODO: Add your control notification handler code here
	if (lOperator == 1)
	{
		adoRs.MoveFirst();
		for (int i = 1; i < lCurRecordNo; i++)
			adoRs.MoveNext();
		ListRecord();
	}

	m_ctrlFirst.EnableWindow(TRUE);
	m_ctrlPrev.EnableWindow(TRUE);
	m_ctrlNext.EnableWindow(TRUE);
	m_ctrlLast.EnableWindow(TRUE);

	m_ctrlAdd.EnableWindow(TRUE);
	m_ctrlEdit.EnableWindow(TRUE);
	m_ctrlDelete.EnableWindow(TRUE);
	m_ctrlSave.EnableWindow(FALSE);
	m_ctrlCancel.EnableWindow(FALSE);

	lOperator = 0;
}