dlg_mima.cpp

文件加密的好代码

// Dlg_Mima.cpp : 实现文件
//

#include "stdafx.h"
#include "文件加密.h"
#include "Dlg_Mima.h"
#include ".\dlg_mima.h"


// CDlg_Mima 对话框
extern CMyApp theApp;
IMPLEMENT_DYNAMIC(CDlg_Mima, CDialog)
CDlg_Mima::CDlg_Mima(CWnd* pParent /*=NULL*/)
	: CDialog(CDlg_Mima::IDD, pParent)
	, m_b_notusekey(true)
	, m_s_oldkey(_T(""))
	, m_s_newkey1(_T(""))
	, m_s_newkey2(_T(""))
	, m_b_haveoldkey(false)
{
	CString settingfile,t;
	settingfile.Format("%s\\setings.ini",theApp.m_path);
	m_b_haveoldkey=::GetPrivateProfileInt("KEY","haveoldkey",0,settingfile);
	m_b_notusekey=!m_b_haveoldkey;
}

CDlg_Mima::~CDlg_Mima()
{
}

void CDlg_Mima::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	DDX_Check(pDX, IDC_NOTUSE, m_b_notusekey);
	DDX_Text(pDX, IDC_OLDKEY, m_s_oldkey);
	DDX_Text(pDX, IDC_NEWKEY1, m_s_newkey1);
	DDX_Text(pDX, IDC_NEWKEY2, m_s_newkey2);
	DDV_MaxChars(pDX, m_s_oldkey, 32);
	DDV_MaxChars(pDX, m_s_newkey1, 32);
	DDV_MaxChars(pDX, m_s_newkey2, 32);
}


BEGIN_MESSAGE_MAP(CDlg_Mima, CDialog)
	ON_BN_CLICKED(IDC_NOTUSE, OnBnClickedNotuse)
	ON_BN_CLICKED(IDOK, OnBnClickedOk)
END_MESSAGE_MAP()


// CDlg_Mima 消息处理程序

void CDlg_Mima::OnBnClickedNotuse()
{
	UpdateData(true);
	if(m_b_notusekey)
	{
		if(m_b_haveoldkey)GetDlgItem(IDC_OLDKEY)->EnableWindow(true);
		else GetDlgItem(IDC_OLDKEY)->EnableWindow(false);
		GetDlgItem(IDC_NEWKEY1)->EnableWindow(false);
		GetDlgItem(IDC_NEWKEY2)->EnableWindow(false);
	}
	else 
	{
		if(m_b_haveoldkey)GetDlgItem(IDC_OLDKEY)->EnableWindow(true);
		else GetDlgItem(IDC_OLDKEY)->EnableWindow(false);
		GetDlgItem(IDC_NEWKEY1)->EnableWindow(true);
		GetDlgItem(IDC_NEWKEY2)->EnableWindow(true);
	}
}

BOOL CDlg_Mima::OnInitDialog()
{
	CDialog::OnInitDialog();
	OnBnClickedNotuse();

	return TRUE;  // return TRUE unless you set the focus to a control
	// 异常: OCX 属性页应返回 FALSE
}

void CDlg_Mima::OnBnClickedOk()
{
	theApp;
	CString settingfile,t;
	if(!UpdateData())return;
	settingfile.Format("%s\\setings.ini",theApp.m_path);
	if(m_b_haveoldkey)//如果有旧密码
	{
		::GetPrivateProfileString("KEY","key","",t.GetBuffer(40),40,settingfile);
		if(strcmp(m_s_oldkey,t)!=0)
		{
			AfxMessageBox("请输入正确的旧密码！");
			return;
		}
	}
	if(!m_b_notusekey)//如果使用密码
	{
		if(strcmp(m_s_newkey1,m_s_newkey2)!=0)
		{
			AfxMessageBox("两次输入的密码不相同！");
			return;
		}
		::WritePrivateProfileString("KEY","haveoldkey","1",settingfile);
		::WritePrivateProfileString("KEY","key",m_s_newkey1,settingfile);
	}

	else
	{
		::WritePrivateProfileString("KEY","haveoldkey","0",settingfile);
	}
	
	OnOK();
}