一个简单实用的进制转换算法

// 进制转换Dlg.cpp : implementation file
//

#include "stdafx.h"
#include "进制转换.h"
#include "进制转换Dlg.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()

/////////////////////////////////////////////////////////////////////////////
// CMyDlg dialog

CMyDlg::CMyDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CMyDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CMyDlg)
	m_d = 0;
	m_b = _T("");
	m_o = _T("");
	m_x = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CMyDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CMyDlg)
	DDX_Text(pDX, IDC_EDIT1, m_d);
	DDX_Text(pDX, IDC_EDIT2, m_b);
	DDX_Text(pDX, IDC_EDIT3, m_o);
	DDX_Text(pDX, IDC_EDIT4, m_x);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CMyDlg, CDialog)
	//{{AFX_MSG_MAP(CMyDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_EN_CHANGE(IDC_EDIT4, OnChangeEdit4)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CMyDlg message handlers

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

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

void CMyDlg::OnOK() 
{
	// TODO: Add extra validation here
	long n;
	int m;
	UpdateData(TRUE);
	n=m_d;
	m_b = _T("");                        //二进制输出，_T("")作用是取字符串
	if (n==0) m_b = _T("0");
	if (n<0)
	{
		n=-n;
		while(n>0)
		{
			m=n%2;
		    switch(m)
			{
			case 0:m_b="0"+m_b;break;
			case 1:m_b="1"+m_b;break;
			}
			n=n/2;
		}
		m_b="-"+m_b;
	}                                    //负数的情况
    while(n>0)
	{
		m=n%2;
		switch(m)
		{
			case 0:m_b="0"+m_b;break;
			case 1:m_b="1"+m_b;break;
		}
	n=n/2;                               //正数的情况
}
//--------------------------------------------------------
    n=m_d;
	m_o = _T("");                        //取八进制输出的字符串
	if (n==0) m_o = _T("0");
    if (n<0)
	{
		n=-n;
		while(n>0)
	{
		m=n%8;
		switch(m)
		{
			case 0:m_o="0"+m_o;break;
			case 1:m_o="1"+m_o;break;
			case 2:m_o="2"+m_o;break;
			case 3:m_o="3"+m_o;break;
			case 4:m_o="4"+m_o;break;
			case 5:m_o="5"+m_o;break;
			case 6:m_o="6"+m_o;break;
			case 7:m_o="7"+m_o;
		}
		n=n/8;
	}
		m_o="-"+m_o;
	}                                     //负数的情况

	while(n>0)
	{
		m=n%8;
		switch(m)
		{
			case 0:m_o="0"+m_o;break;
			case 1:m_o="1"+m_o;break;
			case 2:m_o="2"+m_o;break;
			case 3:m_o="3"+m_o;break;
			case 4:m_o="4"+m_o;break;
			case 5:m_o="5"+m_o;break;
			case 6:m_o="6"+m_o;break;
			case 7:m_o="7"+m_o;
		}
		n=n/8;
	}                                     //正数的情况

//---------------------------------------------------------

	n=m_d;
	m_x = _T("");                         //取十六进制输出的字符串
	if (n==0) m_x = _T("0");
	if (n<0)
	{
		n=-n;
        while(n>0)
		{
			m=n%16;
			switch(m)
			{
			case 0:m_x="0"+m_x;break;
			case 1:m_x="1"+m_x;break;
			case 2:m_x="2"+m_x;break;
			case 3:m_x="3"+m_x;break;
			case 4:m_x="4"+m_x;break;
			case 5:m_x="5"+m_x;break;
			case 6:m_x="6"+m_x;break;
			case 7:m_x="7"+m_x;break;
			case 8:m_x="8"+m_x;break;
			case 9:m_x="9"+m_x;break;
			case 10:m_x="A"+m_x;break;
			case 11:m_x="B"+m_x;break;
			case 12:m_x="C"+m_x;break;
			case 13:m_x="D"+m_x;break;
			case 14:m_x="E"+m_x;break;
			case 15:m_x="F"+m_x;
			}
		n=n/16;
		}
        m_x="-"+m_x;
	}                                      //负数的情况

	while(n>0)
	{
		m=n%16;
		switch(m)
		{
			case 0:m_x="0"+m_x;break;
			case 1:m_x="1"+m_x;break;
			case 2:m_x="2"+m_x;break;
			case 3:m_x="3"+m_x;break;
			case 4:m_x="4"+m_x;break;
			case 5:m_x="5"+m_x;break;
			case 6:m_x="6"+m_x;break;
			case 7:m_x="7"+m_x;break;
			case 8:m_x="8"+m_x;break;
			case 9:m_x="9"+m_x;break;
			case 10:m_x="A"+m_x;break;
			case 11:m_x="B"+m_x;break;
			case 12:m_x="C"+m_x;break;
			case 13:m_x="D"+m_x;break;
			case 14:m_x="E"+m_x;break;
			case 15:m_x="F"+m_x;
		}
		n=n/16;
	}                                      //正数的情况
	UpdateData(FALSE);

	// CDialog::OnOK();
}

void CMyDlg::OnChangeEdit4() 
{
	// TODO: If this is a RICHEDIT control, the control will not
	// send this notification unless you override the CDialog::OnInitDialog()
	// function and call CRichEditCtrl().SetEventMask()
	// with the ENM_CHANGE flag ORed into the mask.
	
	// TODO: Add your control notification handler code here
	
}