calculatordlg.cpp

本程序为仿照Windows计算器制作

// CalculatorDlg.cpp : implementation file
//

#include "stdafx.h"
#include "Calculator.h"
#include "CalculatorDlg.h"
#include "math.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_number = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
	NumberState=1;m_number="";Radix=10;
	
}

void CCalculatorDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CCalculatorDlg)
	DDX_Text(pDX, IDC_EDIT_PUTOUT, m_number);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CCalculatorDlg, CDialog)
	//{{AFX_MSG_MAP(CCalculatorDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_WM_LBUTTONDOWN()
	//}}AFX_MSG_MAP
	ON_COMMAND_RANGE(IDC_NUMBER1,IDC_NUMBERF,OnNumberKey)
	ON_COMMAND_RANGE(IDC_NUMBER_Sqrt,IDC_NUMBER_Clear,OnOperationKey)
END_MESSAGE_MAP()

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

BOOL CCalculatorDlg::OnInitDialog()
{
	CDialog::OnInitDialog();
	Zero=TRUE;

	// 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::OnNumberKey(UINT nID)
{
	CString n="";
	switch(nID)
	{
	case IDC_NUMBER1:n="1";break;
	case IDC_NUMBER2:n="2";break;
	case IDC_NUMBER3:n="3";break;
	case IDC_NUMBER4:n="4";break;
	case IDC_NUMBER5:n="5";break;
	case IDC_NUMBER6:n="6";break;
	case IDC_NUMBER7:n="7";break;
	case IDC_NUMBER8:n="8";break;
	case IDC_NUMBER9:n="9";break;
	case IDC_NUMBER0:n="0";break;
	case IDC_NUMBERA:n="a";break;
	case IDC_NUMBERB:n="b";break;
	case IDC_NUMBERC:n="c";break;
	case IDC_NUMBERD:n="d";break;
	case IDC_NUMBERE:n="e";break;
	case IDC_NUMBERF:n="f";break;
	case IDC_NUMBER_Point:if(m_number.Find('.')==-1)n=".";
		                  else n="";
						  break;
	}
	if(Zero==FALSE)
	{
		Zero=TRUE;
		GetDlgItem(IDC_NUMBER0)->EnableWindow(TRUE);
		
	}
	
	if(NumberState==1)
	{
		m_number+=n;
		number1=atof(m_number);
		UpdateData(FALSE);
	}
	else
	{
		m_number+=n;
		number2=atof(m_number);
		UpdateData(FALSE);
	}

}
void CCalculatorDlg::OnOperationKey(UINT nID)//响应操作键按下
{
	int temp=1,i,j;
	char buffer[20];
	switch(nID)
	{
	case IDC_NUMBER_PlusMinus:  if(NumberState==1)
							 {
								 number1=-number1;
							     m_number.Format("%g",number1);
							 }
							 else
							 {
								 number2=-number2;
							     m_number.Format("%g",number2);
							 }
							 UpdateData(FALSE);
							 break;
							 
	case IDC_NUMBER_BackSpace: i=m_number.GetLength();
		                     m_number=m_number.Left(i-1);
							 UpdateData(FALSE);
							  break;

	case IDC_NUMBER_Divide: cal();//如果是连续计算
		                    if(Zero=TRUE)
							{
								GetDlgItem(IDC_NUMBER0)->EnableWindow(FALSE);
								Zero=FALSE;
							}
							OperationState=1;
							m_number="";
							NumberState=2;
							break;
	case IDC_NUMBER_Multiply:  cal();//如果是连续计算
		                     OperationState=2;
							 m_number="";
							 NumberState=2;
							 break;
	case IDC_NUMBER_Add:     cal();
		                     OperationState=3;
							 m_number="";
							 NumberState=2;
							 break;
	case IDC_NUMBER_Subtract:  cal();//如果是连续计算
		                       OperationState=4;
								m_number="";
								NumberState=2;
								break;
	case IDC_NUMBER_Clear:   
		                     number1=number2=0;
							 m_number="";
							 UpdateData(FALSE);
							 NumberState=1;
							 break;
	case IDC_NUMBER_Sqrt:
		                     number1=sqrt(number1);
							 m_number.Format("%g",number1);
							 UpdateData(FALSE);
							 break;
	case IDC_NUMBER_Derivative:
		                     number1=(double)1/number1;
							 m_number.Format("%g",number1);
							 UpdateData(FALSE);
							 break;
	case IDC_NUMBER_Equal:
		                     cal();//计算derivateive
							 break;
	case IDC_NUMBER_SIN:
		                    number1=sin(number1);
							m_number.Format("%g",number1);
							UpdateData(FALSE);
							break;
	case IDC_NUMBER_COS:
		                    number1=cos(number1);
							m_number.Format("%g",number1);
							UpdateData(FALSE);
							break;
	case IDC_NUMBER_TAN:
						    number1=tan(number1);
							m_number.Format("%g",number1);
							UpdateData(FALSE);
							break;
	case IDC_NUMBER_Square:
							m_number.Format("%g",pow(number1,2));
							UpdateData(FALSE);
							break;
	case IDC_NUMBER_Cube:
							m_number.Format("%g",pow(number1,3));
							UpdateData(FALSE);
							break;
	case IDC_NUMBER_Nn:     cal();
		                    OperationState=5;
							m_number="";
							NumberState=2;
							break;
	case IDC_NUMBER_Factorial:
		                    for(i=1;i<=number1;i++) 
								temp*=i;
							number1=temp;
							m_number.Format("%g",number1);
							UpdateData(FALSE);
							break;
	case IDC_NUMBER_LOG:
		                   m_number.Format("%g",log10(number1));
						   UpdateData(FALSE);
						   break;
	case IDC_NUMBER_Percent:
		                     cal();
							 OperationState=6;
							 m_number="";
							 NumberState=2;
							 break;
	case IDC_Binary:         
		for(j=1002;j<=1030;j++)
			GetDlgItem(j)->EnableWindow(FALSE);
		GetDlgItem(1010)->EnableWindow(TRUE);
		GetDlgItem(1020)->EnableWindow(TRUE);
		number1=TransToDec(atoi(m_number),Radix);
		itoa((UINT)number1,buffer,2);					 
		m_number=buffer;
		Radix=2;
		UpdateData(FALSE);					 
		break;					 
							 
					 
	case IDC_Decimal:
		for(j=1002;j<=1030;j++)
			GetDlgItem(j)->EnableWindow(TRUE);
		number1=TransToDec(atoi(m_number),Radix);
		Radix=10;
		itoa((UINT)number1,buffer,10);
		m_number=buffer;
		UpdateData(FALSE);
		break;										 
							 					 

	case IDC_Hexa:
		for(j=1012;j<=1017;j++)
			GetDlgItem(j)->EnableWindow(TRUE);
	    for(j=1018;j<=1030;j++)
			GetDlgItem(j)->EnableWindow(FALSE);					 
		GetDlgItem(1020)->EnableWindow(TRUE);
		number1=TransToDec(atoi(m_number),Radix);
        Radix=16;
		itoa((UINT)number1,buffer,16);
		m_number=buffer;
		UpdateData(FALSE);
		break;

	case IDC_Octal:
		for(j=1002;j<=1007;j++)
			GetDlgItem(j)->EnableWindow(TRUE);
	    for(j=1008;j<=1030;j++)
			GetDlgItem(j)->EnableWindow(FALSE);
		GetDlgItem(1010)->EnableWindow(TRUE);
		GetDlgItem(1020)->EnableWindow(TRUE);
	    number1=TransToDec(atoi(m_number),Radix);
		Radix=8;
		itoa((UINT)number1,buffer,8);
		m_number=buffer;
		UpdateData(FALSE);
		break;
	}
}
void CCalculatorDlg::cal()
{
	char buf[20];
	switch(OperationState)
	{
	case 1:if(number1==(int)number1&&number2==(int)number2)
		   {
			   number1=TransToDec((int)number1,Radix);
			   number2=TransToDec((int)number2,Radix);
			   itoa((int)(number1/number2),buf,Radix);
			   m_number=buf;
			   NumberState=1;
			   UpdateData(FALSE);
			   break;
		   }
		else
			m_number.Format("%g",number1/number2);
		NumberState=1;
		UpdateData(FALSE);
		break;

	case 2:if(number1==(int)number1&&number2==(int)number2)
		   {
			   number1=TransToDec((int)number1,Radix);
			   number2=TransToDec((int)number2,Radix);
			   itoa((int)(number1*number2),buf,Radix);
			   m_number=buf;
			   NumberState=1;
			   UpdateData(FALSE);
			   break;
		   }
		else
			m_number.Format("%g",number1*number2);
		NumberState=1;
		UpdateData(FALSE);
		break;
	case 3:
		if(number1==(int)number1&&number2==(int)number2)
		{
			number1=TransToDec((int)number1,Radix);
			number2=TransToDec((int)number2,Radix);
			itoa((int)(number1+number2),buf,Radix);
			m_number=buf;
			NumberState=1;
			UpdateData(FALSE);
			break;
		}
		else
			m_number.Format("%g",number1+number2);
		NumberState=1;
		UpdateData(FALSE);
		break;
	case 4:if(number1==(int)number1&&number2==(int)number2)
		   {
			   number1=TransToDec((int)number1,Radix);
			   number2=TransToDec((int)number2,Radix);
			   itoa((int)(number1-number2),buf,Radix);
			   m_number=buf;
			   NumberState=1;
			   UpdateData(FALSE);
			   break;
		   }
		else
			m_number.Format("%g",number1-number2);
		NumberState=1;
		UpdateData(FALSE);
		break;

	case 5:
			m_number.Format("%g",pow(number1,number2));
			UpdateData(FALSE);
			break;
	case 6:
		    m_number.Format("%g",number1*number2/100.0);
		    NumberState=1;
			UpdateData(FALSE);
			break;
	}
	
	number1=atof(m_number);
	OperationState=0;

}


void CCalculatorDlg::OnLButtonDown(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	PostMessage(WM_NCLBUTTONDOWN,HTCAPTION,MAKELPARAM(point.x,point.y));

	
	CDialog::OnLButtonDown(nFlags, point);
}
void CCalculatorDlg::OnOK()
{}

BOOL CCalculatorDlg::PreTranslateMessage(MSG* pMsg) 
{
	// TODO: Add your specialized code here and/or call the base class
	if (pMsg->message == WM_KEYDOWN && pMsg->wParam == VK_ESCAPE) 
		return TRUE;

	
	return CDialog::PreTranslateMessage(pMsg);
}

//将二、八、十六进制转换成十进制,但是如果十六进制数中含有字母，则
//在显示中会将字符省略,造成数据不正确

int CCalculatorDlg::TransToDec(UINT nNum,int base)
{
	int i=0,bin[20],temp=1;
	int x=0;
	while(nNum)
	{
		i++;
		bin[i]=nNum%10;
		nNum=nNum/10;
	}
	for(int j=1;j<=i;j++)
	{
		temp=int(pow(base,j-1));
		x=x+temp*bin[j];
	}
	return x;
}