ActiveX/DCOM/ATL

开发平台：
Visual C++

OffDemoDlg.cpp：源码内容
							// OffDemoDlg.cpp : implementation file
//
#include "stdafx.h"
#include "OffDemo.h"
#include "OffDemoDlg.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()
/////////////////////////////////////////////////////////////////////////////
// COffDemoDlg dialog
COffDemoDlg::COffDemoDlg(CWnd* pParent /*=NULL*/)
	: CDialog(COffDemoDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(COffDemoDlg)
	m_isbn = 0;
	m_name = _T("");
	m_author = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}
void COffDemoDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(COffDemoDlg)
	DDX_Text(pDX, IDC_EDIT1, m_isbn);
	DDX_Text(pDX, IDC_EDIT2, m_name);
	DDX_Text(pDX, IDC_EDIT3, m_author);
	//}}AFX_DATA_MAP
}
BEGIN_MESSAGE_MAP(COffDemoDlg, CDialog)
	//{{AFX_MSG_MAP(COffDemoDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BUTTON1, OnButton1)
	ON_BN_CLICKED(IDC_BUTTON7, OnButton7)
	ON_BN_CLICKED(IDC_BUTTON6, OnButton6)
	ON_BN_CLICKED(IDC_BUTTON9, OnButton9)
	ON_BN_CLICKED(IDC_BUTTON3, OnButton3)
	ON_BN_CLICKED(IDC_BUTTON2, OnButton2)
	ON_BN_CLICKED(IDC_BUTTON4, OnButton4)
	ON_BN_CLICKED(IDC_BUTTON5, OnButton5)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// COffDemoDlg message handlers
BOOL COffDemoDlg::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
	::CoInitialize(NULL);
	// TODO: Add extra initialization here
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}
void COffDemoDlg::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 COffDemoDlg::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 COffDemoDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}
void COffDemoDlg::OnButton1() 
{
	// TODO: Add your control notification handler code here
	_ConnectionPtr conn;
	conn.CreateInstance(__uuidof(Connection));
	conn->Open(_bstr_t("Provider=OraOLEDB.Oracle.1;User Id=scott;Data Source=tarena"),"",_bstr_t("tiger"),-1);
	rs.CreateInstance(__uuidof(Recordset));
	_bstr_t sqlobj("select * from ocybooks");
	rs->Open((_variant_t)sqlobj,
		conn.GetInterfacePtr(),
		adOpenStatic,
		adLockBatchOptimistic,
		-1);
    //显示第一条记录；
	this->show();
}
//显示数据，默认为第一条
void COffDemoDlg::show()
{
	if(!rs->adEOF && !rs->BOF)
	{
		this->m_isbn=(UINT)(long)(rs->GetCollect("BOOKISNB"));
		this->m_name=(CString)(LPCTSTR)(_bstr_t)(rs->GetCollect("BOOKNAME"));		
		this->UpdateData(FALSE);
	}	
}
//查看后一条数据
void COffDemoDlg::OnButton7() 
{
	// TODO: Add your control notification handler code here
	if(!rs->adEOF)
	{
		rs->MoveNext();
		show();
	}
	else
	{
		MessageBox("End!!!");
	}
}
//查看前一条数据
void COffDemoDlg::OnButton6() 
{
	// TODO: Add your control notification handler code here
	if(!rs->BOF)
	{
		rs->MovePrevious();
		show();
	}
	else
	{
		MessageBox("Begin!!!");
	}	
}
//显示第一条数据
void COffDemoDlg::OnButton9() 
{
	// TODO: Add your control notification handler code here
	if(!rs->BOF)
	{
		rs->MoveFirst();
		show();
	}
	else
	{
		MessageBox("Begin!!!");
	}		
}
//新增记录时先清空文本框
void COffDemoDlg::OnButton3() 
{
	// TODO: Add your control notification handler code here
	this->m_isbn=0;
	this->m_name="";
	this->m_author="";
	this->UpdateData(FALSE);
}
//更新数据库数据
void COffDemoDlg::OnButton2() 
{
	// TODO: Add your control notification handler code here
	this->UpdateData(TRUE);
	this->rs->AddNew();
	this->rs->GetFields()->GetItem("BookIsnb")->Value=_variant_t((long)(this->m_isbn));
	this->rs->GetFields()->GetItem("BookName")->Value=_variant_t(this->m_name.AllocSysString());
	this->rs->GetFields()->GetItem("BookIsnb")->Value=_variant_t(this->m_author.AllocSysString());
	this->rs->Update();
	this->rs->UpdateBatch(adAffectAll);
}
//删除数据库数据
void COffDemoDlg::OnButton4() 
{
	// TODO: Add your control notification handler code here
	this->rs->Delete(adAffectCurrent);
	this->rs->Update();
	this->rs->UpdateBatch(adAffectAll);
}
//更改数据
void COffDemoDlg::OnButton5() 
{
	// TODO: Add your control notification handler code here
	this->UpdateData(TRUE);
	this->rs->GetFields()->GetItem("BookIsnb")->Value=_variant_t((long)(this->m_isbn));
	this->rs->GetFields()->GetItem("BookName")->Value=_variant_t(this->m_name.AllocSysString());
	this->rs->GetFields()->GetItem("BookAuthor")->Value=_variant_t(this->m_author.AllocSysString());
	this->rs->Update();
	this->rs->UpdateBatch(adAffectAll);
	
}

						