学步园

/* (程序头部注释开始)            
* 程序的版权和版本声明部分            
* Copyright (c) 2011, 烟台大学计算机学院学生             
* All rights reserved.            
* 文件名称：                                          
* 作    者：   王明星                           
* 完成日期：   2012   年  5 月 22日            
* 版 本 号：                      
* 对任务及求解方法的描述部分            
* 输入描述：            
* 问题描述：          
* 程序头部的注释结束            
*/     

class Triangle
{
public:
	Triangle(){a=1;b=1;c=1;}
	Triangle(double x, double y, double z) {a=x; b=y; c=z;}
	double area(void);
	double perimeter(void);
private:
	double a,b,c;
	
};

#include "stdafx.h"
#include <Cmath>
#include "MyTriangle.h"
double Triangle::area(void)
{ double s=(a+b+c)/2;
return sqrt(s*(s-a)*(s-b)*(s-c));
}
double Triangle::perimeter(void)
{
	return (a+b+c);
}

// triangleDlg.cpp : implementation file
//

#include "stdafx.h"
#include "triangle.h"
#include "triangleDlg.h"
#include"MyTriangle.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#endif


// CAboutDlg dialog used for App About

class CAboutDlg : public CDialog
{
public:
	CAboutDlg();

	// Dialog Data
	enum { IDD = IDD_ABOUTBOX };

protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support

	// Implementation
protected:
	DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
END_MESSAGE_MAP()


// CtriangleDlg dialog




CtriangleDlg::CtriangleDlg(CWnd* pParent /*=NULL*/)
: CDialog(CtriangleDlg::IDD, pParent)
, m_a(0)
, m_b(0)
, m_c(0)
, m_area(0)
, m_perimeter(0)
{
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CtriangleDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	DDX_Text(pDX, IDC_EDIT1, m_a);
	DDX_Text(pDX, IDC_EDIT2, m_b);
	DDX_Text(pDX, IDC_EDIT3, m_c);
	DDX_Text(pDX, IDC_EDIT4, m_area);
	DDX_Text(pDX, IDC_EDIT5, m_perimeter);
}

BEGIN_MESSAGE_MAP(CtriangleDlg, CDialog)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	//}}AFX_MSG_MAP
	ON_BN_CLICKED(IDC_BUTTON1, &CtriangleDlg::OnBnClickedButton1)
	ON_BN_CLICKED(IDC_BUTTON2, &CtriangleDlg::OnBnClickedButton2)
END_MESSAGE_MAP()


// CtriangleDlg message handlers

BOOL CtriangleDlg::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)
	{
		BOOL bNameValid;
		CString strAboutMenu;
		bNameValid = strAboutMenu.LoadString(IDS_ABOUTBOX);
		ASSERT(bNameValid);
		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 CtriangleDlg::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 CtriangleDlg::OnPaint()
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, reinterpret_cast<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 function to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CtriangleDlg::OnQueryDragIcon()
{
	return static_cast<HCURSOR>(m_hIcon);
}


void CtriangleDlg::OnBnClickedButton1()
{ // TODO: 在此添加控件通知处理程序代码
	UpdateData(); //将把界面上各控件输入的值“捕获”到与之关联的变量中
	Triangle t1(m_a,m_b,m_c); //定义三角形对象
	m_area=t1.area();//求面积
	UpdateData(FALSE); //用m_area的值更新界面上对应的控件的值并实现显示
}

void CtriangleDlg::OnBnClickedButton2()
{ // TODO: 在此添加控件通知处理程序代码
	UpdateData(); //将把界面上各控件输入的值“捕获”到与之关联的变量中
	Triangle t1(m_a,m_b,m_c); //定义三角形对象
	m_perimeter=t1.perimeter(); //求面积
	UpdateData(FALSE); //用m_area的值更新界面上对应的控件的值并实现显示
}

上机感言：对这些按钮格外喜欢，呵呵呵！