connmysqldlg.cpp

本程序详细 演示了 vc如何连接数据库

// ConnMySqlDlg.cpp : implementation file
//

#include "stdafx.h"
#include "ConnMySql.h"
#include "ConnMySqlDlg.h"
#include "DbOnMySql.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()

/////////////////////////////////////////////////////////////////////////////
// CConnMySqlDlg dialog

CConnMySqlDlg::CConnMySqlDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CConnMySqlDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CConnMySqlDlg)
		// 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 CConnMySqlDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CConnMySqlDlg) 
	DDX_Control(pDX, IDC_LIST_DSP, m_listBox);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CConnMySqlDlg, CDialog)
	//{{AFX_MSG_MAP(CConnMySqlDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CConnMySqlDlg message handlers

BOOL CConnMySqlDlg::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
	
	/* 修改LIST风格 */
	m_listBox.ModifyStyle(0, LVS_REPORT);
	m_listBox.SetExtendedStyle(LVS_EX_GRIDLINES | LVS_EX_FULLROWSELECT);

	/* LIST表头 */ 
	m_listBox.InsertColumn(1, "学号", LVCFMT_CENTER, 60);
	m_listBox.InsertColumn(2, "姓名", LVCFMT_CENTER, 60);
	m_listBox.InsertColumn(3, "性别", LVCFMT_CENTER, 40);
	m_listBox.InsertColumn(4, "出生日期", LVCFMT_CENTER, 100);
	m_listBox.InsertColumn(5, "备注", LVCFMT_CENTER, 80);

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

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

void CConnMySqlDlg::OnOK() 
{
	DbOnMySql db;

	/* 连接数据库 */
	if(db.ConnDB("127.0.0.1", "root", "123", "vc_sqlexample"))
	{//连接数据库成功
		/* 取得记录显示于界面 */
		//取得记录
		std::list<RecStruct> recList = db.GetAllRec();
		//显示记录
		std::list<RecStruct>::iterator pos;
		for(pos = recList.begin(); pos != recList.end(); ++pos)
		{
			RecStruct rs = (RecStruct)*pos;

			int nItemCount = m_listBox.GetItemCount();
			m_listBox.InsertItem(LVIF_TEXT | LVIF_STATE, 
				nItemCount, 
				0, 0, 0, 0, 0);
			m_listBox.SetItemText(nItemCount, 0, rs.stuId);
			m_listBox.SetItemText(nItemCount, 1, rs.stuName);
			m_listBox.SetItemText(nItemCount, 2, rs.stuSex);
			m_listBox.SetItemText(nItemCount, 3, rs.birth);
			m_listBox.SetItemText(nItemCount, 4, rs.brief);
		}
		
		/* 关闭数据库连接 */
		db.Close(); 
	}
	else
	{//连接数据库失败
		MessageBox("连接数据库失败!", "错误", MB_OK);
	}
	//CDialog::OnOK();
}