studentdlg.cpp

在VC++环境下使用ADO和SQL_SERVER实现学生信息管理系统

// StudentDlg.cpp : implementation file
//

#include "stdafx.h"
#include "Student.h"
#include "StudentDlg.h"
#include "oldpass.h"
#include "frmmain.h"
#include "HtmlHelp.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
extern CStudentApp theApp;
/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About

class CAboutDlg : public CDialog
{
public:

// Dialog Data
	//{{AFX_DATA(CAboutDlg)
	enum { IDD = IDD_ABOUTBOX };
	//}}AFX_DATA

	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CAboutDlg)
	protected:
	//}}AFX_VIRTUAL

// Implementation
protected:
	//{{AFX_MSG(CAboutDlg)
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

//DEL CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
//DEL {
//DEL 	//{{AFX_DATA_INIT(CAboutDlg)
//DEL 	//}}AFX_DATA_INIT
//DEL }

//DEL void CAboutDlg::DoDataExchange(CDataExchange* pDX)
//DEL {
//DEL 	CDialog::DoDataExchange(pDX);
//DEL 	//{{AFX_DATA_MAP(CAboutDlg)
//DEL 	//}}AFX_DATA_MAP
//DEL }

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
	//{{AFX_MSG_MAP(CAboutDlg)
		// No message handlers
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CStudentDlg dialog

CStudentDlg::CStudentDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CStudentDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CStudentDlg)
	m_sServer = _T("");
	m_sUser = _T("");
	m_sPassword = _T("");
	m_sDbase = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CStudentDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CStudentDlg)
	DDX_Control(pDX, IDC_TRUE, m_bTrue);
	DDX_Text(pDX, IDC_SERVER, m_sServer);
	DDX_Text(pDX, IDC_USER, m_sUser);
	DDX_Text(pDX, IDC_PASSWORD, m_sPassword);
	DDX_Text(pDX, IDC_DBASE, m_sDbase);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CStudentDlg, CDialog)
	//{{AFX_MSG_MAP(CStudentDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_TRUE, OnTrue)
	ON_EN_CHANGE(IDC_USER, OnChangeUser)
	ON_EN_CHANGE(IDC_SERVER, OnChangeServer)
	ON_EN_CHANGE(IDC_PASSWORD, OnChangePassword)
	ON_EN_CHANGE(IDC_DBASE, OnChangeDbase)
	ON_COMMAND(ID_SETPASSWORD, OnSetpassword)
	ON_COMMAND(ID_EXIT, OnExit)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CStudentDlg message handlers

BOOL CStudentDlg::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
	m_sServer="bbts_sql";
	m_sUser="zhangmin";
	m_sPassword="1977";
	m_sDbase="study";
	UpdateData(FALSE);
	//使确定按钮无效
	//m_bTrue.EnableWindow(FALSE);
	return TRUE;  // return TRUE  unless you set the focus to a control
}

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


void CStudentDlg::OnTrue() 
{
	///读取自段值
	/*m_pRecordset.CreateInstance("ADODB.Recordset");
	m_pRecordset->Open("select * from users",m_sUser,theApp.m_pConnect.GetInterfacePtr(),adOpenStatic,adLockOptimistic,adCmdText);
	if(!m_pRecordset->adoEOF)
	{
		_variant_t User=m_pRecordset->GetCollect("username");  
		_variant_t Password=m_pRecordset->GetCollect("Password");
		m_sUser=(LPCTSTR)(_bstr_t)User;
		m_sPassword=(LPCTSTR)(_bstr_t)Password;
		UpdateData(FALSE);
	}
	m_pRecordset->Close();*/
	///////
	/*_variant_t RecordsAffected;
	try
	{
		theApp.m_pConnect->Execute(("select username from users where username==%s",(_bstr_t)m_sUser),&RecordsAffected,adCmdText);
	*/
	HRESULT hr;
	char buf[100];
	try
	{
		UpdateData(TRUE);
		hr=theApp.m_pConnect.CreateInstance("ADODB.Connection");
		sprintf(buf,"Provider=SQLOLEDB.1;Persist Security Info=False;User ID=sa;Initial Catalog=study;Data Source=%s",m_sServer);
		if(SUCCEEDED(hr))
		{
			hr=theApp.m_pConnect->Open(buf,"","",-1);

		}
		m_pRecordset.CreateInstance("ADODB.Recordset"); 
		sprintf(buf,"select * from users where Username like \'%s\'",m_sUser);
		m_pRecordset->Open(_variant_t(buf),theApp.m_pConnect.GetInterfacePtr(),adOpenStatic,adLockOptimistic,adCmdText);
		if(m_pRecordset->adoEOF)
		{
			MessageBox("用户名不对！");
			m_sUser="";
			UpdateData(FALSE);
			return;
		}
		m_pRecordset->Close();
		sprintf(buf,"select * from users where Password like \'%s\'",m_sPassword);
		m_pRecordset->Open(_variant_t(buf),theApp.m_pConnect.GetInterfacePtr(),adOpenStatic,adLockOptimistic,adCmdText);
		if(m_pRecordset->adoEOF)
		{
			MessageBox("密码不对！");
			m_sPassword="";
			UpdateData(FALSE);
			return;
		}
		m_pRecordset->Close();
		theApp.m_sUserName=m_sUser;
		//ShowWindow(SW_HIDE);
		CStudentDlg::OnOK();
		CFrmMain mainDlg;
		mainDlg.DoModal();
	
	}
	catch(_com_error e)
	{
		AfxMessageBox(e.ErrorMessage());
	}

	
}

void CStudentDlg::OnChangeUser() 
{
	//UpdateData(TRUE);
	
}

void CStudentDlg::EnableTrue()
{
	if(!m_sUser.IsEmpty() && !m_sServer.IsEmpty() && !m_sDbase.IsEmpty())
	{
		m_bTrue.EnableWindow(TRUE);
		//m_bTrue.SetFocus();
	}
	else
	{
		m_bTrue.EnableWindow(FALSE);
	}
	
}

void CStudentDlg::OnChangeServer() 
{	
//	UpdateData(TRUE);
	EnableTrue();
}

void CStudentDlg::OnChangePassword() 
{
//	UpdateData(TRUE);
	EnableTrue();
}

void CStudentDlg::OnChangeDbase() 
{
//	UpdateData(TRUE);
	EnableTrue();
}

void CStudentDlg::WriteRegTable()
{

}

void CStudentDlg::OnSetpassword() 
{
	COldPass dlg;
	dlg.DoModal();
}

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

void CStudentDlg::OnExit() 
{
	exit(0);
}