myadodlg.cpp

作者对ADO进行封装并演示了它的使用

// MyAdoDlg.cpp : implementation file
//

#include "stdafx.h"
#include "MyAdo.h"
#include "MyAdoDlg.h"
#include "GridDlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CMyAdoDlg dialog

CMyAdoDlg::CMyAdoDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CMyAdoDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CMyAdoDlg)
	m_strTel = _T("");
	m_strName = _T("");
	m_nAge = 0;
	m_strSex = _T("");
	m_cyMoney = COleCurrency(0, 0);
	m_dtDate = COleDateTime::GetCurrentTime();
	m_strOther = _T("");
	m_fLength = 0.0f;
	m_lPostion = 0;
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CMyAdoDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CMyAdoDlg)
	DDX_Text(pDX, IDC_EDIT_TEL, m_strTel);
	DDX_Text(pDX, IDC_EDIT_NAME, m_strName);
	DDX_Text(pDX, IDC_EDIT_AGE, m_nAge);
	DDX_CBString(pDX, IDC_COMBO_SEX, m_strSex);
	DDX_Text(pDX, IDC_EDIT_MONEY, m_cyMoney);
	DDX_DateTimeCtrl(pDX, IDC_DATETIMEPICKER_BORTH, m_dtDate);
	DDX_Text(pDX, IDC_EDIT_OTHER, m_strOther);
	DDX_Text(pDX, IDC_EDIT_LEGTH, m_fLength);
	DDX_Text(pDX, IDC_EDIT_POSTION, m_lPostion);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CMyAdoDlg, CDialog)
	//{{AFX_MSG_MAP(CMyAdoDlg)
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BUTTON_BACK, OnButtonBack)
	ON_BN_CLICKED(IDC_BUTTON_UPDATE, OnButtonUpdate)
	ON_BN_CLICKED(IDC_BUTTON_FORWARD, OnButtonForward)
	ON_BN_CLICKED(IDC_BUTTON_UPDATEPHOTO, OnButtonUpdatephoto)
	ON_BN_CLICKED(IDC_BUTTON_CANCELUPDATE, OnButtonCancelupdate)
	ON_BN_CLICKED(IDC_BUTTON_DELETE, OnButtonDelete)
	ON_BN_CLICKED(IDC_BUTTON_NEW, OnButtonNew)
	ON_BN_CLICKED(IDC_BUTTON_BOOKMARK, OnButtonBookmark)
	ON_BN_CLICKED(IDC_BUTTON_GOBOOKMARK, OnButtonGobookmark)
	ON_BN_CLICKED(IDC_PASS, OnPass)
	ON_BN_CLICKED(IDC_SORT, OnSort)
	ON_BN_CLICKED(IDC_BUTTON_IMPORT, OnButtonImport)
	ON_BN_CLICKED(IDC_BUTTON_EXPORT, OnButtonExport)
	ON_BN_CLICKED(IDC_BUTTON_UPDATEINFO, OnButtonUpdateinfo)
	ON_BN_CLICKED(IDC_BUTTON_BACK2, OnButtonBack2)
	ON_BN_CLICKED(IDC_BUTTON_FORWARD2, OnButtonForward2)
	ON_BN_CLICKED(IDC_BUTTON_UPDATEFIELDINFO, OnButtonUpdatefieldinfo)
	ON_BN_CLICKED(IDC_BUTTON_UPDATECONNECT, OnButtonUpdateconnect)
	ON_BN_CLICKED(IDC_RESET, OnReset)
	ON_BN_CLICKED(IDC_FIND, OnFind)
	ON_BN_CLICKED(IDC_FINDNEXT, OnFindnext)
	ON_BN_CLICKED(IDC_GRID, OnGrid)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CMyAdoDlg message handlers

BOOL CMyAdoDlg::OnInitDialog()
{
	CDialog::OnInitDialog();
	// 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
	
	if (m_adoConnection.ConnectAccess("database.mdb"))
	{
		
		m_adoRecordSet.SetAdoConnection(&m_adoConnection);
		m_adoRecordSet.SetCursorLocation();
		m_adoRecordSet.Open("ado", adCmdTable);
		m_adoConnection.BeginTrans();
		UpdateRecord(TRUE); 
		OnButtonUpdatefieldinfo();
	}
	else
	{
		MessageBox("数据库连接失败!");
	}
	return TRUE;  // return TRUE  unless you set the focus to a control
}

// 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 CMyAdoDlg::OnPaint() 
{
	CPaintDC dc(this); // device context for painting
	if (IsIconic())
	{

		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();
	}
	if (m_Bitmap.GetSafeHandle() != NULL)
	{
		CDC memDC;
		BITMAP bm;
		m_Bitmap.GetBitmap(&bm);
		memDC.CreateCompatibleDC(&dc);
		CBitmap *oldbitmap = memDC.SelectObject(&m_Bitmap);
		dc.BitBlt(370, 100, 130, 160, &memDC, 0, 0, SRCCOPY);
		memDC.SelectObject(oldbitmap);
	}
	
}

// The system calls this to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CMyAdoDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

BOOL CMyAdoDlg::UpdateRecord(BOOL bLoad)
{
	if (m_adoRecordSet.GetRecordCount() < 1) return FALSE;
	if (bLoad)
	{
		int Sex;
		m_adoRecordSet.GetCollect("性别", Sex);
		m_strSex = (Sex == -1) ? "男" : "女";
		m_Bitmap.DeleteObject();
		
		if (!m_adoRecordSet.GetCollect("姓名", m_strName)
		 || !m_adoRecordSet.GetCollect("年龄", m_nAge)
		 || !m_adoRecordSet.GetCollect("身高", m_fLength)
		 || !m_adoRecordSet.GetCollect("出生年月", m_dtDate)
		 || !m_adoRecordSet.GetCollect("总资产", m_cyMoney)
		 || !m_adoRecordSet.GetCollect("电话", m_strTel)
		 || !m_adoRecordSet.GetChunk("玉照", m_Bitmap))
		{
			;
		}
		CRect rect(370, 100, 500, 260);
		InvalidateRect(rect);

		m_lPostion = m_adoRecordSet.GetAbsolutePosition();
		UpdateData(FALSE);
		return TRUE;
	}
	else
	{
		if (!UpdateData()) return FALSE;
		int bSex = 0;
		if (m_strSex == "男") bSex = -1;

		if (!m_adoRecordSet.PutCollect("年龄", m_nAge)
		 || !m_adoRecordSet.PutCollect("身高", m_fLength)
		 || !m_adoRecordSet.PutCollect("姓名", m_strName)
		 || !m_adoRecordSet.PutCollect("电话", m_strTel)
		 || !m_adoRecordSet.PutCollect("总资产", m_cyMoney)
		 || !m_adoRecordSet.PutCollect("出生年月", m_dtDate)
		 || !m_adoRecordSet.PutCollect("性别", bSex))
		{
			AfxMessageBox("Error!");
		}
		return TRUE;
	}
}

void CMyAdoDlg::OnButtonBack() 
{
	try
	{
		if (m_adoRecordSet.IsBOF()) return;
		m_adoRecordSet.MovePrevious();
		if (m_adoRecordSet.IsBOF())
		{
			if (!m_adoRecordSet.IsEOF())
			{
				m_adoRecordSet.MoveLast();
			}
		}
		m_strPathName = "";
		UpdateRecord();
	}
	catch (...) 
	{
	}
}

void CMyAdoDlg::OnButtonUpdate() 
{
	if (UpdateRecord(FALSE))
	{
		m_strPathName = "";
		if (!m_adoRecordSet.Update())
		{
			AfxMessageBox("更新失败，请正确填写相应的信息!");
		}
	}
}

void CMyAdoDlg::OnButtonForward() 
{
	if (m_adoRecordSet.IsEOF()) return;
	m_adoRecordSet.MoveNext();
	if (m_adoRecordSet.IsEOF())
	{
		if (!m_adoRecordSet.IsBOF())
		{
			m_adoRecordSet.MoveFirst();
		}
	}
	m_strPathName = "";
	UpdateRecord();
}

void CMyAdoDlg::OnOK() 
{
	m_adoConnection.CommitTrans();
	CDialog::OnOK();
}

void CMyAdoDlg::OnButtonUpdatephoto() 
{
	if (m_adoRecordSet.GetRecordCount() < 1) return ;
	static char BASED_CODE szFilter[] = "BMP Files (*.bmp)|*.bmp|All Files (*.*)|*.*||";
	CFileDialog dlg(TRUE,"BMP",NULL,  OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT,szFilter);
	if (dlg.DoModal() == IDOK)
	{
		m_strPathName = dlg.GetPathName();
		if (m_strPathName != "")
		{
			if (m_adoRecordSet.AppendChunk("玉照", LPCTSTR(m_strPathName)))
			{
				CFile file;
				if (file.Open(LPCTSTR(m_strPathName), CFile::modeRead))
				{
					long length = (long)file.GetLength();
					char *pdata = new char[length + 1];
					if (file.Read(pdata, length) == (DWORD)length)
					{
						BITMAPFILEHEADER	bmfHeader;
						DWORD bmfHeaderLen = sizeof(bmfHeader);
						strncpy((LPSTR)&bmfHeader, (LPSTR)pdata, bmfHeaderLen);
						if (bmfHeader.bfType == (*(WORD*)"BM") )
						{
							LPSTR lpDIB = pdata + bmfHeaderLen;
							BITMAPINFOHEADER &bmiHeader = *(LPBITMAPINFOHEADER)lpDIB;
							BITMAPINFO &bmInfo = *(LPBITMAPINFO)lpDIB;

							LPVOID lpDIBBits = pdata + ((BITMAPFILEHEADER *)pdata)->bfOffBits;
							CWindowDC dc(this);
							HBITMAP hBmp = CreateDIBitmap(dc.m_hDC, &bmiHeader, CBM_INIT, lpDIBBits, &bmInfo, DIB_RGB_COLORS);
							if (m_Bitmap.GetSafeHandle() != NULL) m_Bitmap.DeleteObject();
							m_Bitmap.Attach(hBmp);
							Invalidate();

						}
					}
					delete[] pdata;
					pdata = NULL;
					
				}

			} // if (m_adoRecordSet.AppendChun
		} //	if (m_strPathName != "")


	}
	Invalidate();
}