// MenuOfDlgDlg.cpp : implementation file
//

#include "stdafx.h"
#include "MenuOfDlg.h"
#include "MenuOfDlgDlg.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()

/////////////////////////////////////////////////////////////////////////////
// CMenuOfDlgDlg dialog

CMenuOfDlgDlg::CMenuOfDlgDlg(CWnd* pParent /*=NULL*/)
    : CDialog(CMenuOfDlgDlg::IDD, pParent)
{
    //{{AFX_DATA_INIT(CMenuOfDlgDlg)
        // NOTE: the ClassWizard will add member initialization here
    //}}AFX_DATA_INIT
    // Note that LoadIcon does not require a subsequent DestroyIcon in Win32
    m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CMenuOfDlgDlg::DoDataExchange(CDataExchange* pDX)
{
    CDialog::DoDataExchange(pDX);
    //{{AFX_DATA_MAP(CMenuOfDlgDlg)
    DDX_Control(pDX, IDC_EDIT6, m_Edit6);
    DDX_Control(pDX, IDC_EDIT5, m_Edit5);
    DDX_Control(pDX, IDC_EDIT4, m_Edit4);
    DDX_Control(pDX, IDC_EDIT3, m_Edit3);
    DDX_Control(pDX, IDC_EDIT2, m_Edit2);
    DDX_Control(pDX, IDC_EDIT1, m_Edit1);
    DDX_Control(pDX, IDC_ALLOW, m_ALLOW);
    //}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CMenuOfDlgDlg, CDialog)
    //{{AFX_MSG_MAP(CMenuOfDlgDlg)
    ON_WM_SYSCOMMAND()
    ON_WM_PAINT()
    ON_WM_QUERYDRAGICON()
    ON_BN_CLICKED(IDC_ALLOW, OnAllow)
    ON_COMMAND(IDM_EXIT, OnExit)
    ON_COMMAND(IDM_SUM, OnSum)
    ON_COMMAND(IDM_AVERAGE, OnAverage)
    //}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CMenuOfDlgDlg message handlers

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

void CMenuOfDlgDlg::OnAllow()
{
if(!bAllow)
{      
    CMenu *pmenu=GetMenu();
    CMenu *pSubmenu=pmenu->GetSubMenu(0);
    pSubmenu->InsertMenu(0,MF_BYPOSITION.IDM_SUM,"求和");
    pSubmenu->InsertMenu(1,MF_BYPOSITION.IDM_AVERAGE,"求平均");
    bAllow=TRUE;
    m_Allow.SetWindowText("禁止计算");
}
else
{
    CMenu *pmenu=GetMenu();
    CMenu *pSubmenu=pmenu->GetSubMenu(0);
    pSubmenu->DeleteMenu(IDM_SUM,MF_BYCOMMAND);
    pSubmenu->DeleteMenu(IDM_AVERAGE,MF_BYCOMMAND);
    bAllow=FALSE;
    m_Allow.SetWindowText("允许计算");
}
}

void CMenuOfDlgDlg::OnExit()
{
OnOK();    
}

void CMenuOfDlgDlg::OnSum()
{
double sum=0;
char StrOfNum[10];
m_Edit1.GetWindowText(StrOfNum,10);
sum=sum+atof(StrOfNum);
m_Edit1.GetWindowText(StrOfNum,10);
sum=sum+atof(StrOfNum);
m_Edit2.GetWindowText(StrOfNum,10);
sum=sum+atof(StrOfNum);
m_Edit3.GetWindowText(StrOfNum,10);
sum=sum+atof(StrOfNum);
m_Edit4.GetWindowText(StrOfNum,10);
sum=sum+atof(StrOfNum);
sprintf(StrOfNum,"%.3f",sum);
m_Edit5.SetWindowText(StrOfNum);
}
void CMenuOfDlgDlg::OnAverage()
{
double sum=0,average;
char StrOfNum[10];
m_Edit1.GetWindowText(StrOfNum,10);
sum=sum+atof(StrOfNum);
m_Edit1.GetWindowText(StrOfNum,10);
sum=sum+atof(StrOfNum);
m_Edit2.GetWindowText(StrOfNum,10);
sum=sum+atof(StrOfNum);
m_Edit3.GetWindowText(StrOfNum,10);
sum=sum+atof(StrOfNum);
m_Edit4.GetWindowText(StrOfNum,10);
sum=sum+atof(StrOfNum);
average=sum/4;
sprintf(StrOfNum,"%.3f",sum);
m_Edit6.SetWindowText(StrOfNum);
}


调试结果：
Compiling...
MenuOfDlgDlg.cpp
E:\MenuOfDlg\MenuOfDlgDlg.cpp(188) : error C2059: syntax error : 'constant'
E:\MenuOfDlg\MenuOfDlgDlg.cpp(189) : error C2228: left of '.pSubmenu' must have class/struct/union type
E:\MenuOfDlg\MenuOfDlgDlg.cpp(189) : error C2227: left of '->InsertMenuA' must point to class/struct/union
E:\MenuOfDlg\MenuOfDlgDlg.cpp(189) : error C2059: syntax error : 'constant'
E:\MenuOfDlg\MenuOfDlgDlg.cpp(190) : error C2228: left of '.bAllow' must have class/struct/union type
E:\MenuOfDlg\MenuOfDlgDlg.cpp(191) : error C2228: left of '.SetWindowTextA' must have class/struct/union type
E:\MenuOfDlg\MenuOfDlgDlg.cpp(200) : error C2228: left of '.SetWindowTextA' must have class/struct/union type
Error executing cl.exe.

MenuOfDlg.exe - 7 error(s), 0 warning(s)