SQL_user.rar_VC++SQL

// SQLDlg.cpp : implementation file // #include "stdafx.h" #include "SQL.h" #include "SQLDlg.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() ///////////////////////////////////////////////////////////////////////////// // CSQLDlg dialog CSQLDlg::CSQLDlg(CWnd* pParent /*=NULL*/) : CDialog(CSQLDlg::IDD, pParent) { //{{AFX_DATA_INIT(CSQLDlg) m_name = _T(""); m_password = _T(""); m_server = _T(""); m_database = _T(""); //}}AFX_DATA_INIT // Note that LoadIcon does not require a subsequent DestroyIcon in Win32 m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME); } void CSQLDlg::DoDataExchange(CDataExchange* pDX) { CDialog::DoDataExchange(pDX); //{{AFX_DATA_MAP(CSQLDlg) DDX_Text(pDX, IDC_NAME, m_name); DDX_Text(pDX, IDC_PASSWORD, m_password); DDX_Text(pDX, IDC_SERVER, m_server); DDX_Text(pDX, IDC_DATABASE, m_database); //}}AFX_DATA_MAP } BEGIN_MESSAGE_MAP(CSQLDlg, CDialog) //{{AFX_MSG_MAP(CSQLDlg) ON_WM_SYSCOMMAND() ON_WM_PAINT() ON_WM_QUERYDRAGICON() //}}AFX_MSG_MAP END_MESSAGE_MAP() ///////////////////////////////////////////////////////////////////////////// // CSQLDlg message handlers BOOL CSQLDlg::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 CSQLDlg::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 CSQLDlg::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 CSQLDlg::OnQueryDragIcon() { return (HCURSOR) m_hIcon; } void CSQLDlg::OnOK() { // TODO: Add extra validation here UpdateData(); bConnect=ConnectDB(); if(bConnect) { CDialog::OnOK(); CUser dlg; dlg.DoModal (); } CDialog::OnOK(); } BOOL CSQLDlg::ConnectDB() { HRESULT hr; _bstr_t bt; BOOL m_bConnected=FALSE; bt=(_bstr_t)"Provider=SQLOLEDB.1;Persist Security Info=False;User ID="+(_bstr_t)m_name+(_bstr_t)";Password="+(_bstr_t)m_password+(_bstr_t)";Initial Catalog="+(_bstr_t)m_database+(_bstr_t)";Data Source="+(_bstr_t)m_server; CoInitialize(NULL); //Initialize COM try{ hr=cn.CreateInstance(__uuidof(Connection)); ASSERT(SUCCEEDED(hr)); hr=cn->Open (bt,_bstr_t(""),_bstr_t(""),adModeUnknown); ASSERT(SUCCEEDED(hr)); //AfxMessageBox("数据库连接成功!"); m_bConnected=TRUE; } catch ( _com_error ){ AfxMessageBox("数据库连接失败，请与系统管理员联系!"); } return m_bConnected; } void CSQLDlg::DisconnectDB() { if(bConnect) { cn->Close (); } CoUninitialize(); } void CSQLDlg::OnCancel() { // TODO: Add extra cleanup here DisconnectDB(); CDialog::OnCancel(); }