已经是许久没有写过博客了，自从省赛结束以来，什么都不想干，学习不想学，什么都不愿意干。现在突然觉得是时候回到代码的世界了，我觉得人生需要点擅长的事情，不能老是在周围徘徊，找不到方向就不好了。
这次就用我所编的一个mfc版本的计算器程序来说一下吧。
// mfc_secondDlg.cpp : implementation file
//
#include "stdafx.h"
#include "mfc_second.h"
#include "mfc_secondDlg.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()
/////////////////////////////////////////////////////////////////////////////
// CMfc_secondDlg dialog
CMfc_secondDlg::CMfc_secondDlg(CWnd* pParent /*=NULL*/)
: CDialog(CMfc_secondDlg::IDD, pParent)
{
//{{AFX_DATA_INIT(CMfc_secondDlg)
m_num1 = 0.0;
m_num2 = 0.0;
m_result = 0.0;
//}}AFX_DATA_INIT
// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}
void CMfc_secondDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CMfc_secondDlg)
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_result);
//}}AFX_DATA_MAP
}
BEGIN_MESSAGE_MAP(CMfc_secondDlg, CDialog)
//{{AFX_MSG_MAP(CMfc_secondDlg)
ON_WM_SYSCOMMAND()
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
ON_BN_CLICKED(IDC_BUTTON14_NUM0, OnButton14Num0)
ON_BN_CLICKED(IDC_BUTTON14_NUM1, OnButton14Num1)
ON_BN_CLICKED(IDC_BUTTON14_NUM2, OnButton14Num2)
ON_BN_CLICKED(IDC_BUTTON14_NUM3, OnButton14Num3)
ON_BN_CLICKED(IDC_BUTTON14_NUM4, OnButton14Num4)
ON_BN_CLICKED(IDC_BUTTON14_NUM5, OnButton14Num5)
ON_BN_CLICKED(IDC_BUTTON14_NUM6, OnButton14Num6)
ON_BN_CLICKED(IDC_BUTTON14_NUM7, OnButton14Num7)
ON_BN_CLICKED(IDC_BUTTON14_NUM8, OnButton14Num8)
ON_BN_CLICKED(IDC_BUTTON14_NUM9, OnButton14Num9)
ON_BN_CLICKED(add, Onadd)
ON_BN_CLICKED(jian, Onjian)
ON_BN_CLICKED(cheng, Oncheng)
ON_BN_CLICKED(chu, Onchu)
ON_EN_CHANGE(IDC_EDIT1, OnChangeEdit1)
ON_EN_CHANGE(IDC_EDIT2, OnChangeEdit2)
ON_EN_CHANGE(IDC_EDIT3, OnChangeEdit3)
ON_WM_CANCELMODE()
ON_WM_LBUTTONDOWN()
ON_EN_SETFOCUS(IDC_EDIT1, OnSetfocusEdit1)
ON_EN_SETFOCUS(IDC_EDIT2, OnSetfocusEdit2)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CMfc_secondDlg message handlers
int nEditFlag;
BOOL CMfc_secondDlg::OnInitDialog()
{
CDialog::OnInitDialog();
//判断是哪个编辑框
nEditFlag = 0;
// 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 CMfc_secondDlg::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 CMfc_secondDlg::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 CMfc_secondDlg::OnQueryDragIcon()
{
return (HCURSOR) m_hIcon;
}
void CMfc_secondDlg::OnButton14Num0()
{
// TODO: Add your control notification handler code here
}
void CMfc_secondDlg::OnButton14Num1()
{
// TODO: Add your control notification handler code here
UpdateData(TRUE);
if(nEditFlag ==1)
{
m_num1=m_num1*10+1;
}
else
if(nEditFlag ==2)
{
m_num2=m_num2*10+1;
}
UpdateData(FALSE);
}
void CMfc_secondDlg::OnButton14Num2()
{
// TODO: Add your control notification handler code here
UpdateData(TRUE);
if(nEditFlag ==1)
{
m_num1=m_num1*10+2;
}
else
if(nEditFlag ==2)
{
m_num2=m_num2*10+2;
}
UpdateData(FALSE);
}
void CMfc_secondDlg::OnButton14Num3()
{
// TODO: Add your control notification handler code here
}
void CMfc_secondDlg::OnButton14Num4()
{
// TODO: Add your control notification handler code here
}
void CMfc_secondDlg::OnButton14Num5()
{
// TODO: Add your control notification handler code here
}
void CMfc_secondDlg::OnButton14Num6()
{
// TODO: Add your control notification handler code here
}
void CMfc_secondDlg::OnButton14Num7()
{
// TODO: Add your control notification handler code here
}
void CMfc_secondDlg::OnButton14Num8()
{
// TODO: Add your control notification handler code here
}
void CMfc_secondDlg::OnButton14Num9()
{
// TODO: Add your control notification handler code here
}
void CMfc_secondDlg::Onadd()
{
// TODO: Add your control notification handler code here
UpdateData();
double n_result;
n_result = m_num1 + m_num2;
m_result = n_result;
char sz[20];
sprintf(sz,"%f",m_result);
m_CResult.SetWindowText(sz);
}
void CMfc_secondDlg::Onjian()
{
// TODO: Add your control notification handler code here
UpdateData();
double n_result;
n_result = m_num1 - m_num2;
m_result = n_result;
char sz[20];
sprintf(sz,"%f",m_result);
m_CResult.SetWindowText(sz);
}
void CMfc_secondDlg::Oncheng()
{
// TODO: Add your control notification handler code here
}
void CMfc_secondDlg::Onchu()
{
// TODO: Add your control notification handler code here
}
void CMfc_secondDlg::OnChangeEdit1()
{
// 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
}
void CMfc_secondDlg::OnChangeEdit2()
{
// 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
}
void CMfc_secondDlg::OnChangeEdit3()
{
// 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
}
void CMfc_secondDlg::OnCancelMode()
{
CDialog::OnCancelMode();
// TODO: Add your message handler code here
}
void CMfc_secondDlg::OnLButtonDown(UINT nFlags, CPoint point)
{
// TODO: Add your message handler code here and/or call default
this->SetFocus();
nEditFlag = 0;
CDialog::OnLButtonDown(nFlags, point);
}
void CMfc_secondDlg::OnSetfocusEdit1()
{
// TODO: Add your control notification handler code here
nEditFlag =1;
}
void CMfc_secondDlg::OnSetfocusEdit2()
{
// TODO: Add your control notification handler code here
nEditFlag =2;
}
