calculatordlg.cpp

小型加减乘除计算器

// CalculatorDlg.cpp : implementation file
//

#include "stdafx.h"
#include "Calculator.h"
#include "CalculatorDlg.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()

/////////////////////////////////////////////////////////////////////////////
// CCalculatorDlg dialog

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

void CCalculatorDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CCalculatorDlg)
	DDX_Control(pDX, IDC_DATA2_EDIT, m_Data2);
	DDX_Control(pDX, IDC_DATA1_EDIT, m_Data1);
	DDX_Text(pDX, IDC_RESULT_EDIT, m_Result);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CCalculatorDlg, CDialog)
	//{{AFX_MSG_MAP(CCalculatorDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_ADD_BUTTON, OnAddButton)
	ON_BN_CLICKED(IDC_MUL_BUTTON, OnMulButton)
	ON_BN_CLICKED(IDC_SUB_BUTTON, OnSubButton)
	ON_BN_CLICKED(IDC_DIV_BUTTON, OnDivButton)
	ON_BN_CLICKED(IDC_EXIT_BUTTON, OnExitButton)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CCalculatorDlg message handlers

BOOL CCalculatorDlg::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 CCalculatorDlg::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 CCalculatorDlg::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 CCalculatorDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CCalculatorDlg::OnAddButton() 
{
	// TODO: Add your control notification handler code here
	char cstrData1[10],cstrData2[10];//定义编辑框中的字符串对象
	double dfData1,dfData2,dfResult;//定义编辑框中的数字类型
	char cBuffer[50];//定义字符缓冲区
	m_Data1.GetWindowText(cstrData1,10);//得到Data1编辑框中的字符串
	m_Data2.GetWindowText(cstrData2,10);//得到Data2编辑框中的字符串
	dfData1=atof((LPCTSTR)cstrData1);//调用函数atof将Data1编辑框中的字符串转换为浮点数
	dfData2=atof((LPCTSTR)cstrData2);//调用函数atof将Data2编辑框中的字符串转换为浮点数
	dfResult=dfData1+dfData2;//求和
	_gcvt(dfResult,10,cBuffer);//调用_gcvt函数将计算结果存入缓冲区
	m_Result=(LPCTSTR)cBuffer;//将结果转换成字符串在结果编辑框中显示
	UpdateData(FALSE);//刷新屏幕
}

void CCalculatorDlg::OnMulButton() 
{
	// TODO: Add your control notification handler code here
char cstrData1[10],cstrData2[10];
	double dfData1,dfData2,dfResult;
	char cBuffer[50];
	m_Data1.GetWindowText(cstrData1,10);
	m_Data2.GetWindowText(cstrData2,10);
	dfData1=atof((LPCTSTR)cstrData1);
	dfData2=atof((LPCTSTR)cstrData2);
	dfResult=dfData1*dfData2;//求积
	_gcvt(dfResult,10,cBuffer);
	m_Result=(LPCTSTR)cBuffer;
	UpdateData(FALSE);	
}

void CCalculatorDlg::OnSubButton() 
{
	// TODO: Add your control notification handler code here
	char cstrData1[10],cstrData2[10];
	double dfData1,dfData2,dfResult;
	char cBuffer[50];
	m_Data1.GetWindowText(cstrData1,10);
	m_Data2.GetWindowText(cstrData2,10);
	dfData1=atof((LPCTSTR)cstrData1);
	dfData2=atof((LPCTSTR)cstrData2);
	dfResult=dfData1-dfData2;//求差
	_gcvt(dfResult,10,cBuffer);
	m_Result=(LPCTSTR)cBuffer;
	UpdateData(FALSE);
}

void CCalculatorDlg::OnDivButton() 
{
	// TODO: Add your control notification handler code here
	char cstrData1[10],cstrData2[10];
	double dfData1,dfData2,dfResult;
	char cBuffer[50];
	m_Data1.GetWindowText(cstrData1,10);
	m_Data2.GetWindowText(cstrData2,10);
	dfData1=atof((LPCTSTR)cstrData1);
	dfData2=atof((LPCTSTR)cstrData2);
	if(dfData2==0)
		m_Result="除数为0错!";
	else
	{
	dfResult=dfData1/dfData2;//求商
	_gcvt(dfResult,10,cBuffer);
	m_Result=(LPCTSTR)cBuffer;
	}
	UpdateData(FALSE);
}

void CCalculatorDlg::OnExitButton() 
{
	// TODO: Add your control notification handler code here
	OnOK();//结束
}