mfcobjectstoredlg.cpp

《Windows CE 权威指南》（作者：(美)CHRIS MUENCH

// MFCObjectStoreDlg.cpp : implementation file
//

#include "stdafx.h"
#include "MFCObjectStore.h"
#include "MFCObjectStoreDlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// CMFCObjectStoreDlg dialog

CMFCObjectStoreDlg::CMFCObjectStoreDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CMFCObjectStoreDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CMFCObjectStoreDlg)
		// 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 CMFCObjectStoreDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CMFCObjectStoreDlg)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CMFCObjectStoreDlg, CDialog)
	//{{AFX_MSG_MAP(CMFCObjectStoreDlg)
	ON_BN_CLICKED(IDC_BUTTON1, OnButton1)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CMFCObjectStoreDlg message handlers

BOOL CMFCObjectStoreDlg::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
	
	CenterWindow(GetDesktopWindow());	// center to the hpc screen

	// TODO: Add extra initialization here
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}


// <BOOK_ADDON Chapter 8.3.2> ******************************
void CMFCObjectStoreDlg::OnButton1() 
{
CCeDBDatabase myDB;

	// Step1 - Open/Create a database
	// *********************************************
	if (!CCeDBDatabase::Exists(TEXT("Book831")))
		myDB.Create(TEXT("Book831"));
	myDB.Open(TEXT("Book831"));
	wprintf(TEXT("Step1 Complete: Database Opened\n\r"));

	// Step2 - Writing a record
	// *********************************************
	CCeDBRecord rec;
	CCeDBProp props[4];
	SYSTEMTIME  SystemTime;
	FILETIME FileTime;
	CEBLOB	tBlob;

	props[0] = CCeDBProp((long)0xffffffff, 0);
	GetSystemTime(&SystemTime);
	SystemTimeToFileTime(&SystemTime,&FileTime);
	props[1] = CCeDBProp(FileTime,1);
	props[2] = CCeDBProp(TEXT("This is a string property"),2);
	tBlob.lpb=(LPBYTE)TEXT("This is a Blob property");
	tBlob.dwCount=lstrlen((TCHAR *)tBlob.lpb)*sizeof(TCHAR);
	props[3] = CCeDBProp(tBlob,  3);

	rec.AddProps(props,4);
	if(!myDB.AddRecord(&rec))
	{ return; }		// Handle Write Failure 

	// Step3 - Reading a record
	// *********************************************
	CCeDBProp *pProp;
	
	if(!myDB.SeekFirst() || !myDB.ReadCurrRecord(&rec))
	{ return; }		// Handle Seek and Read Failure

	for (int i=0;i<rec.GetNumProps();i++)
	{
		pProp = rec.GetPropFromIdent(i);
		wprintf(TEXT(" : Prop/Field %d of Type %d\n\r"),
			  i+1,pProp->GetType());
	}
	// Step4 - Closing the Database
	// *********************************************
	myDB.Close();

}
// </BOOK_ADDON Chapter 8.3.2> ******************************