createmdbdlg.cpp

利用DAO创建.mdf数据库

// CreateMDBDlg.cpp : implementation file
//

#include "stdafx.h"
#include "CreateMDB.h"
#include "CreateMDBDlg.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()

/////////////////////////////////////////////////////////////////////////////
// CCreateMDBDlg dialog

CCreateMDBDlg::CCreateMDBDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CCreateMDBDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CCreateMDBDlg)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
	
	m_pDaoRecordset=NULL;
	m_pDaoTableDef=NULL;
}

void CCreateMDBDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CCreateMDBDlg)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CCreateMDBDlg, CDialog)
	//{{AFX_MSG_MAP(CCreateMDBDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BUTTONCREATEDB, OnButtoncreatedb)
	ON_BN_CLICKED(IDC_BUTTONEXIT, OnButtonexit)
	ON_WM_CLOSE()
	ON_BN_CLICKED(IDC_BUTTONINSERTREC, OnButtoninsertrec)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CCreateMDBDlg message handlers

BOOL CCreateMDBDlg::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
	SetDlgItemText(IDC_EDITDBNAME,"student");

	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CCreateMDBDlg::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 CCreateMDBDlg::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 CCreateMDBDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CCreateMDBDlg::OnButtoncreatedb() 
{
	// TODO: Add your control notification handler code here
	CString strDBName;

	//get mdb file name
	GetDlgItemText(IDC_EDITDBNAME,strDBName);
	if (strDBName.IsEmpty())
	{
		AfxMessageBox("请输入MDB文件名！");
		return;
	}

	strDBName+=CString(".MDB");

	//create db
	m_DaoDatabase.Create(strDBName);

	//create table def
	m_pDaoTableDef=new CDaoTableDef(&m_DaoDatabase);
	if (!m_pDaoTableDef)
	{
		AfxMessageBox("创建表对象失败！");
		return;
	}
	//create student table
	m_pDaoTableDef->Create("tb_student");
	m_pDaoTableDef->CreateField("name",dbText,50);
	m_pDaoTableDef->CreateField("sex",dbText,2);
	m_pDaoTableDef->CreateField("age",dbLong,0);
	m_pDaoTableDef->CreateField("number",dbLong,0);
	m_pDaoTableDef->Append();

	//create record set
	m_pDaoRecordset=new CDaoRecordset(&m_DaoDatabase);
	if (!m_pDaoRecordset)
	{
		AfxMessageBox("创建记录集对象失败！");
		delete m_pDaoTableDef;
		return;
	}
	m_pDaoRecordset->Open(m_pDaoTableDef);

	//disable create db button and enable insert record button
	GetDlgItem(IDC_BUTTONCREATEDB)->EnableWindow(FALSE);
	GetDlgItem(IDC_BUTTONINSERTREC)->EnableWindow(TRUE);

}

void CCreateMDBDlg::OnButtonexit() 
{
	// TODO: Add your control notification handler code here
	SendMessage(WM_CLOSE);	
}

void CCreateMDBDlg::OnClose() 
{
	// TODO: Add your message handler code here and/or call default
	if (m_DaoDatabase.IsOpen())
		m_DaoDatabase.Close();
	if (m_pDaoRecordset)
		delete m_pDaoRecordset;
	if (m_pDaoTableDef)
		delete m_pDaoTableDef;

	CDialog::OnClose();
}

void CCreateMDBDlg::OnButtoninsertrec() 
{
	// TODO: Add your control notification handler code here
	CString name,sex;
	long age,number;
	BOOL Trans=0;

	//get name
	GetDlgItemText(IDC_EDITNAME,name);
	if (name.IsEmpty())
	{
		AfxMessageBox("请输入姓名！");
		return;
	}
	//get sex
	GetDlgItemText(IDC_EDITSEX,sex);
	if (sex.IsEmpty())
	{
		AfxMessageBox("请输入性别！");
		return;
	}
	if (sex!=CString("男") && sex!=CString("女"))
	{
		AfxMessageBox("性别输入有误！");
		return;
	}	
	//get age
	age=GetDlgItemInt(IDC_EDITAGE,&Trans);
	if (!Trans)
	{
		AfxMessageBox("请重新输入年龄！");
		return;
	}
	//get number
	number=GetDlgItemInt(IDC_EDITNUMBER,&Trans);
	if (!Trans)
	{
		AfxMessageBox("请重新输入学号！");
		return;
	}
	
	//insert record to database
	if (m_pDaoRecordset && m_pDaoRecordset->IsOpen())
	{
		m_pDaoRecordset->AddNew();
		//set name
		COleVariant OleVariantName(name,VT_BSTRT);
		m_pDaoRecordset->SetFieldValue("name",OleVariantName);
		//set sex
		COleVariant OleVariantSex(sex,VT_BSTRT);
		m_pDaoRecordset->SetFieldValue("sex",OleVariantSex);
		//set age
		COleVariant OleVariantAge(age);
		m_pDaoRecordset->SetFieldValue("age",OleVariantAge);
		//set number
		COleVariant OleVariantNumber(number);
		m_pDaoRecordset->SetFieldValue("number",OleVariantNumber);
		m_pDaoRecordset->Update();
	}

	//clear edit box content
	SetDlgItemText(IDC_EDITNAME,"");
	SetDlgItemText(IDC_EDITSEX,"");
	SetDlgItemText(IDC_EDITAGE,"");
	SetDlgItemText(IDC_EDITNUMBER,"");
}