tipdlg1.cpp

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#include "stdafx.h"
#include "resource.h"
// CG: This file added by 'Tip of the Day' component.

#include <winreg.h>
#include <sys\stat.h>
#include <sys\types.h>

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

/////////////////////////////////////////////////////////////////////////////
// CTipDlg dialog
#define MAX_BUFLEN 1000
static const TCHAR szSection[] = _T("Tip");
static const TCHAR szIntFilePos[] = _T("FilePos");
static const TCHAR szTimeStamp[] = _T("TimeStamp");
static const TCHAR szIntStartup[] = _T("StartUp");

CTipDlg::CTipDlg(CWnd* pParent /*=NULL*/)
	: CDialog(IDD_TIP, pParent)
{
	//{{AFX_DATA_INIT(CTipDlg)
	m_bStartup = TRUE;
	//}}AFX_DATA_INIT
	CWinApp* pApp = AfxGetApp();
	m_bStartup = !pApp->GetProfileInt(szSection, szIntStartup, 0);
	UINT iFilePos = pApp->GetProfileInt(szSection, szIntFilePos, 0);
	m_pStream = fopen("tips.txt", "r");
	if (m_pStream == NULL) 
	{
		m_strTip.LoadString(CG_IDS_FILE_ABSENT);
		return;
	} 
	struct _stat buf;
	_fstat(_fileno(m_pStream), &buf);
	CString strCurrentTime = ctime(&buf.st_ctime);
	strCurrentTime.TrimRight();
	CString strStoredTime = 
		pApp->GetProfileString(szSection, szTimeStamp, NULL);
	if (strCurrentTime != strStoredTime) 
	{
		iFilePos = 0;
		pApp->WriteProfileString(szSection, szTimeStamp, strCurrentTime);
	}

	if (fseek(m_pStream, iFilePos, SEEK_SET) != 0) 
	{
		AfxMessageBox(CG_IDP_FILE_CORRUPT);
	}
	else 
	{
		GetNextTipString(m_strTip);
	}
}

CTipDlg::~CTipDlg()
{
	if (m_pStream != NULL) 
	{
		CWinApp* pApp = AfxGetApp();
		pApp->WriteProfileInt(szSection, szIntFilePos, ftell(m_pStream));
		fclose(m_pStream);
	}
}
        
void CTipDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CTipDlg)
	DDX_Check(pDX, IDC_STARTUP, m_bStartup);
	DDX_Text(pDX, IDC_TIPSTRING, m_strTip);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CTipDlg, CDialog)
	//{{AFX_MSG_MAP(CTipDlg)

	ON_WM_CTLCOLOR()
	ON_WM_PAINT()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CTipDlg message handlers

void CTipDlg::OnNextTip()
{
	GetNextTipString(m_strTip);
	UpdateData(FALSE);
}
//取得下一条提示信息；
void CTipDlg::GetNextTipString(CString& strNext)
{
	LPTSTR lpsz = strNext.GetBuffer(MAX_BUFLEN);
	BOOL bStop = FALSE;
	while (!bStop) 
	{
		if (_fgetts(lpsz, MAX_BUFLEN, m_pStream) == NULL) 
		{
			if (fseek(m_pStream, 0, SEEK_SET) != 0) 
				AfxMessageBox(CG_IDP_FILE_CORRUPT);
		} 
		else 
		{
			if (*lpsz != ' ' && *lpsz != '\t' && 
				*lpsz != '\n' && *lpsz != ';') 
			{
				bStop = TRUE;
			}
		}
	}
	strNext.ReleaseBuffer();
}
//////////////////////////////////////
//改变对话框的背景颜色和字体颜色
//////////////////////////////////////
HBRUSH CTipDlg::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor)
{
	if (pWnd->GetDlgCtrlID() == IDC_TIPSTRING)
		return (HBRUSH)GetStockObject(WHITE_BRUSH);

	return CDialog::OnCtlColor(pDC, pWnd, nCtlColor);
}
//////////////////////////////////////
//按下OK按钮后，关闭该对话框
//////////////////////////////////////
void CTipDlg::OnOK()
{
	CDialog::OnOK();
	
    // Update the startup information stored in the INI file
	CWinApp* pApp = AfxGetApp();
	pApp->WriteProfileInt(szSection, szIntStartup, !m_bStartup);
}

BOOL CTipDlg::OnInitDialog()
{
	CDialog::OnInitDialog();
	return TRUE;  
}
////////////////////////////////////////
//在程序运行最初显示简单使用帮助信息
////////////////////////////////////////
void CTipDlg::OnPaint()
{
	CPaintDC dc(this); 
	CWnd* pStatic = GetDlgItem(IDC_BULB);
	CRect rect;
	pStatic->GetWindowRect(&rect);
	ScreenToClient(&rect);
	CBrush brush;
	brush.CreateStockObject(WHITE_BRUSH);
	dc.FillRect(rect, &brush);
	CBitmap bmp;
	bmp.LoadBitmap(IDB_LIGHTBULB);
	BITMAP bmpInfo;
	bmp.GetBitmap(&bmpInfo);
	CDC dcTmp;
	dcTmp.CreateCompatibleDC(&dc);
	dcTmp.SelectObject(&bmp);
	rect.bottom = bmpInfo.bmHeight + rect.top;
	dc.BitBlt(rect.left, rect.top, rect.Width(), rect.Height(), 
		&dcTmp, 0, 0, SRCCOPY);
	CString strMessage;
	strMessage.LoadString(CG_IDS_DIDYOUKNOW);
	rect.left += bmpInfo.bmWidth;
	dc.DrawText(strMessage, rect, DT_VCENTER | DT_SINGLELINE);
}