// AdoCtrlAccessDlg.cpp : implementation file
//
#include "stdafx.h"
#include "AdoCtrlAccess.h"
#include "AdoCtrlAccessDlg.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()
/////////////////////////////////////////////////////////////////////////////
// CAdoCtrlAccessDlg dialog
CAdoCtrlAccessDlg::CAdoCtrlAccessDlg(CWnd* pParent /*=NULL*/)
: CDialog(CAdoCtrlAccessDlg::IDD, pParent)
{
//{{AFX_DATA_INIT(CAdoCtrlAccessDlg)
m_nID = 0;
m_strName = _T("");
//}}AFX_DATA_INIT
// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}
void CAdoCtrlAccessDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CAdoCtrlAccessDlg)
DDX_Text(pDX, IDC_ID, m_nID);
DDX_Text(pDX, IDC_NAME, m_strName);
//}}AFX_DATA_MAP
}
BEGIN_MESSAGE_MAP(CAdoCtrlAccessDlg, CDialog)
//{{AFX_MSG_MAP(CAdoCtrlAccessDlg)
ON_WM_SYSCOMMAND()
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
ON_BN_CLICKED(IDC_PRV, OnPrv)
ON_BN_CLICKED(IDC_NEXT, OnNext)
ON_BN_CLICKED(IDC_MODIFY, OnModify)
ON_WM_DESTROY()
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CAdoCtrlAccessDlg message handlers
BOOL CAdoCtrlAccessDlg::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
//初始化环境
::CoInitialize(NULL);
//创建并打开数据库连接对象
_variant_t vFieldValue;
CString strFieldValue;
m_pCon.CreateInstance(__uuidof(Connection));
m_pCon->Open("students","","",NULL);
//创建并打开记录集对象
m_pRs.CreateInstance(__uuidof(Recordset));
m_pRs->Open("select* from table1",m_pCon.GetInterfacePtr(),adOpenDynamic,adLockOptimistic,adCmdText);
if(VARIANT_FALSE == m_pRs->EndOfFile)
{
//获得第一条记录并显示
vFieldValue = m_pRs->GetCollect("id");
strFieldValue = (char*)_bstr_t(vFieldValue);
m_nID = atoi(strFieldValue.GetBuffer(0));;
vFieldValue.Clear();
vFieldValue = m_pRs->GetCollect("name");
strFieldValue = (char*)_bstr_t(vFieldValue);
m_strName = strFieldValue;
vFieldValue.Clear();
}
UpdateData(FALSE);
return TRUE; // return TRUE unless you set the focus to a control
}
void CAdoCtrlAccessDlg::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 CAdoCtrlAccessDlg::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 CAdoCtrlAccessDlg::OnQueryDragIcon()
{
return (HCURSOR) m_hIcon;
}
//前一条记录
void CAdoCtrlAccessDlg::OnPrv()
{
_variant_t vFieldValue;
CString strFieldValue;
//记录集指针前移一条
m_pRs->MovePrevious();
if(VARIANT_FALSE == m_pRs->FirstOfFile)
{
//获得当前条的数据并显示
vFieldValue = m_pRs->GetCollect("id");
strFieldValue = (char*)_bstr_t(vFieldValue);
m_nID = atoi(strFieldValue.GetBuffer(0));;
vFieldValue.Clear();
vFieldValue = m_pRs->GetCollect("name");
strFieldValue = (char*)_bstr_t(vFieldValue);
m_strName = strFieldValue;
vFieldValue.Clear();
UpdateData(FALSE);
}
else
{
//定位到第一条
m_pRs->MoveNext();
AfxMessageBox("已经到第一条了");
}
}
//后一条记录
void CAdoCtrlAccessDlg::OnNext()
{
_variant_t vFieldValue;
CString strFieldValue;
//记录集指针后移一条
m_pRs->MoveNext();
if(VARIANT_FALSE == m_pRs->EndOfFile)
{
//获得当前条的数据并显示
vFieldValue = m_pRs->GetCollect("id");
strFieldValue = (char*)_bstr_t(vFieldValue);
m_nID = atoi(strFieldValue.GetBuffer(0));;
vFieldValue.Clear();
vFieldValue = m_pRs->GetCollect("name");
strFieldValue = (char*)_bstr_t(vFieldValue);
m_strName = strFieldValue;
vFieldValue.Clear();
UpdateData(FALSE);
}
else
{
//定位到最后一条
m_pRs->MovePrevious();
AfxMessageBox("已经到最后一条了");
}
}
//修改记录
void CAdoCtrlAccessDlg::OnModify()
{
UpdateData(TRUE);
if(VARIANT_FALSE == m_pRs->EndOfFile)
{
//修改数据库记录
_variant_t vFieldName,vFieldValue;
CString strValue;
vFieldName.SetString("id");
strValue.Format("%d",m_nID);
vFieldValue.SetString(strValue);
m_pRs->Update(vFieldName,vFieldValue);
vFieldName.Clear();
vFieldValue.Clear();
vFieldName.SetString("name");
vFieldValue.SetString(m_strName);
m_pRs->Update(vFieldName,vFieldValue);
vFieldName.Clear();
vFieldValue.Clear();
}
}
void CAdoCtrlAccessDlg::OnDestroy()
{
//关闭记录和连接
m_pRs->Close();
m_pCon->Close();
//释放环境
::CoUninitialize();
CDialog::OnDestroy();
}
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