dynodbcdlg.cpp

动态的ODBC演示程序

// DynODBCDlg.cpp : implementation file
//

#include "stdafx.h"
#include "DynODBC.h"
#include "DynODBCDlg.h"

#include <odbcinst.h>
#pragma comment(lib,"odbccp32.lib")

#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()

/////////////////////////////////////////////////////////////////////////////
// CDynODBCDlg dialog

CDynODBCDlg::CDynODBCDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CDynODBCDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CDynODBCDlg)
		// 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);
}

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

BEGIN_MESSAGE_MAP(CDynODBCDlg, CDialog)
	//{{AFX_MSG_MAP(CDynODBCDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_WM_CLOSE()
	ON_BN_CLICKED(IDC_EXIT, OnExit)
	ON_BN_CLICKED(IDC_GENDB, OnGendb)
	ON_BN_CLICKED(IDC_GENTBL, OnGentbl)
	ON_BN_CLICKED(IDC_RMVDTSRC, OnRmvdtsrc)
	ON_BN_CLICKED(IDC_GENDTSRC, OnGendtsrc)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CDynODBCDlg message handlers

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

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

void CDynODBCDlg::OnOK() 
{
	// TODO: Add extra validation here
	
//	CDialog::OnOK();
}

void CDynODBCDlg::OnCancel() 
{
	// TODO: Add extra cleanup here
	
//	CDialog::OnCancel();
}

void CDynODBCDlg::OnClose() 
{
	// TODO: Add your message handler code here and/or call default
	
	CDialog::OnOK();
}

void CDynODBCDlg::OnExit() 
{
	CDialog::OnOK();
}

void CDynODBCDlg::OnGendb() 
{
	CString sDriver="Microsoft Access Driver (*.mdb)";
	CString sAccessFile,sPath,sSql;
	char cFile[MAX_PATH+1];

	GetModuleFileName(NULL,cFile,MAX_PATH);
	sPath.Format("%s",cFile);
	int nPos=sPath.ReverseFind('\\');
	sPath=sPath.Left(nPos);
	sAccessFile.Format("%s\\%s",sPath,"Test.mdb");
	sSql.Format("CREATE_DB=\"%s\"\0\0",sAccessFile);

	SQLConfigDataSource(NULL,ODBC_ADD_DSN,"Microsoft Access Driver (*.mdb)",sSql);

	CString sMessage;
	sMessage.Format("在文件夹\n\n%s\n\n下产生了数据库文件 Test.mdb 。\n\n"
		"请在该处查找并用 ACCESS 2000 打开查看。",sPath);
	MessageBox(sMessage,"动态ODBC演示");
}

void CDynODBCDlg::OnGendtsrc() 
{
	char cFile[MAX_PATH+1];
	CString sPath,sSql;
	
	GetModuleFileName(NULL,cFile,MAX_PATH);
	sPath.Format("%s",cFile);
	int nPos = sPath.ReverseFind('\\');
	sPath = sPath.Left(nPos);
	sSql.Format("DSN=演示数据源;DBQ=Test.mdb;DEFAULTDIR=%s\0\0",sPath);

	SQLConfigDataSource(NULL,ODBC_ADD_DSN,"MicroSoft Access Driver (*.mdb)",sSql);

	MessageBox("请打开 ODBC 数据源管理器，在“用户DSN选项卡”下查看，\n\n"
		"在 “用户数据源” 列表中增加了一项 “演示数据源”。");
}

void CDynODBCDlg::OnGentbl() 
{
	CDatabase db;

	db.OpenEx("DSN=演示数据源");
	db.ExecuteSQL("Create table Studnet(姓名 varchar(12),年龄 INT)");
	db.ExecuteSQL("Create table Teacher(姓名 varchar(12),年龄 INT)");
	db.Close();

	MessageBox("现在请再次用 ACCESS 2000 打开数据库 Test.mdb 查看，\n\n"
		"库中增加了两张表，分别为 表Student 和 表Teacher 。");
}

void CDynODBCDlg::OnRmvdtsrc() 
{
	SQLConfigDataSource(NULL,ODBC_REMOVE_DSN,"Microsoft Access Driver (*.mdb)","DSN=演示数据源");

	MessageBox("请打开 ODBC 数据源管理器，在用户DSN选项卡下查看，\n\n"
		"在 “用户数据源” 列表中的 “演示数据源” 项已经消失。");
}