Win32 C++ app problem

This is a discussion on Win32 C++ app problem within the Windows Programming forums, part of the Platform Specific Boards category; when i try to compile my program i get and error that says Compiling... helloDlg.cpp C:\Programs\hello\helloDlg.cpp(182) : error C2660: 'MessageBoxA' ...

  1. #1
    Registered User
    Join Date
    Mar 2004
    Posts
    44

    Win32 C++ app problem

    when i try to compile my program i get and error that says

    Compiling...
    helloDlg.cpp
    C:\Programs\hello\helloDlg.cpp(182) : error C2660: 'MessageBoxA' : function does not take 4 parameters
    Error executing cl.exe.

    please help me out on this one

  2. #2
    erstwhile
    Join Date
    Jan 2002
    Posts
    2,227
    msvc6 says 'does not' when it actually means 'does' ie MessageBox does take 4 parameters.

    Without seeing the line in question it's impossible to suggest a correction. Take a look at Magos's example (last post in this thread) for a recent example of the use of MessageBox. Search this board for heaps of others.
    CProgramming FAQ
    Caution: this person may be a carrier of the misinformation virus.

  3. #3
    Registered User
    Join Date
    Mar 2004
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    44

    the MessageBox() example

    here it is
    Code:
    MessageBox(NULL,"You have clicked on an incorrect key please try again"
    	,"What the $$$$",MB_OKCANCEL);

  4. #4
    Registered User
    Join Date
    Mar 2004
    Posts
    44

    please need i need help

    i will show you the rest of the code (a lot to dig through) but i need help please
    [code]
    // helloDlg.cpp : implementation file
    //

    #include "stdafx.h"
    #include "hello.h"
    #include "helloDlg.h"
    #include <windows.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:oDataExchange(CDataExchange* pDX)
    {
    CDialog:oDataExchange(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()

    /////////////////////////////////////////////////////////////////////////////
    // CHelloDlg dialog

    CHelloDlg::CHelloDlg(CWnd* pParent /*=NULL*/)
    : CDialog(CHelloDlg::IDD, pParent)
    {
    //{{AFX_DATA_INIT(CHelloDlg)
    // 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 CHelloDlg:oDataExchange(CDataExchange* pDX)
    {
    CDialog:oDataExchange(pDX);
    //{{AFX_DATA_MAP(CHelloDlg)
    // NOTE: the ClassWizard will add DDX and DDV calls here
    //}}AFX_DATA_MAP
    }

    BEGIN_MESSAGE_MAP(CHelloDlg, CDialog)
    //{{AFX_MSG_MAP(CHelloDlg)
    ON_WM_SYSCOMMAND()
    ON_WM_PAINT()
    ON_WM_QUERYDRAGICON()
    //}}AFX_MSG_MAP
    END_MESSAGE_MAP()

    /////////////////////////////////////////////////////////////////////////////
    // CHelloDlg message handlers

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

    void CHelloDlg::OnOK()
    {
    // TODO: Add extra validation here

    CDialog::OnOK();
    }


    void CDialog::OnOK(){
    MessageBox(NULL,"You have clicked on an incorrect key please try again"
    ,"What the $$$$",MB_OKCANCEL);
    }

  5. #5
    It's full of stars adrianxw's Avatar
    Join Date
    Aug 2001
    Posts
    4,831
    You are mixing raw API functions and MFC, you should avoid this unless you know what you are doing. The MFC MessageBox() function does not need the first parameter.

    This is a classic example of why posting ENOUGH code, or a good description of your problem is a good idea. From the question, and even the second message, an answer was not actually possible.
    Wave upon wave of demented avengers march cheerfully out of obscurity unto the dream.

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