maxdivisordlg.cpp

用MFC做的求最大公约数的程序 含完整的工程文件

// MaxDivisorDlg.cpp : implementation file
//

#include "stdafx.h"
#include "MaxDivisor.h"
#include "MaxDivisorDlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// CMaxDivisorDlg dialog

CMaxDivisorDlg::CMaxDivisorDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CMaxDivisorDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CMaxDivisorDlg)
	m_num1 = 0;
	m_num2 = 0;
	m_num3 = 0;
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CMaxDivisorDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CMaxDivisorDlg)
	DDX_Control(pDX, IDC_EDIT2, m_Reset2);
	DDX_Control(pDX, IDC_EDIT1, m_Reset1);
	DDX_Control(pDX, IDC_EDIT3, m_CResult);
	DDX_Text(pDX, IDC_EDIT1, m_num1);
	DDX_Text(pDX, IDC_EDIT2, m_num2);
	DDX_Text(pDX, IDC_EDIT3, m_num3);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CMaxDivisorDlg, CDialog)
	//{{AFX_MSG_MAP(CMaxDivisorDlg)
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_COMPUTE, OnCompute)
	ON_BN_CLICKED(IDC_RESET, OnReset)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CMaxDivisorDlg message handlers

BOOL CMaxDivisorDlg::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
	
	// TODO: Add extra initialization here
	
	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 CMaxDivisorDlg::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 CMaxDivisorDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CMaxDivisorDlg::OnCompute() 
{
	// TODO: Add your control notification handler code here
	UpdateData();
	int max;
	int min;
	int temp;
	max = (m_num1 > m_num2 ? m_num1 : m_num2);
	min = m_num1 + m_num2 - max;

	while(min)
	{
		temp = min;
		min = max % min;
		max = temp;
	}
	m_num3 = max;

	char sz[20];
	sprintf(sz, "%d", m_num3);
	m_CResult.SetWindowText(sz);
}

void CMaxDivisorDlg::OnReset() 
{
	// TODO: Add your control notification handler code here
	//UpdateData();
	m_Reset1.SetWindowText("0");
	m_Reset2.SetWindowText("0");
	m_CResult.SetWindowText("0");
}