MessageBox hangs app. AfxMessageBox

JC <>
Fri, 09 Nov 2007 20:35:10 GMT
Subject: Message box hangs application
From: JC <>
Newsgroups: microsoft.public.vstudio.development

- Apologies for posting in 2 groups separately.

I also posted this on microsoft.public.vstudio.development

Will properly cross-post next time. I don't use newsgroups a lot and am
just getting the hang of this Xnews reader.

- Apologies for posting in 2 groups separately.


I am an embedded programmer that is new to Windows programming. So, that
makes me a newbie to Windows (other than a little maintenance here and

I have created a simple application in VS2005. It is a dialog app (not
SDI or MDI). In the application code a CDialog is created; this was put
there by VS2005 code generation.

In the application code a CDialog is created (as mentioned previously).
Then I added a property sheet from the CDialog class.
Then I added property pages from the CPropertySheet class.
When I try to put up an AfxMessageBox or MessageBox, the app. hangs.

I set all dialogs and sheets as "'child" in the dialog editor.

Any ideas? Any help would be greatly appreciated.


Here are the code excerpts.

BOOL CTestCaseApp::InitInstance()
    ... Other wizard generated code...

    CTestCaseDlg dlg;
    m_pMainWnd = &dlg;
    INT_PTR nResponse = dlg.DoModal();
    return FALSE;

BOOL CTestCaseDlg::OnInitDialog()
    CDialog::OnInitDialog(); // wizard generated

    ... Other wizard generated code...

    m_pPSheetCase = new CPSheetCase(m_sWinTitle, (CWnd*)this, 0);
    m_pPSheetCase->Create((CWnd*)this, dwStyle);

    m_pbIDOK = (CButton*)GetDlgItem(IDOK);

    By default, from the VS project wizard, the "Close button" which
    is the 'X' in the upper-right corner of the dialog does not work
    with the IDCANCEL button disabled. To fix it, WM_ON_CLOSE() was
    added to the message map for this file. Also, the overridden
    funcion OnClose() had to be created. Now the 'X' calls OnClose()
    in this cpp file. JAC
    m_pbIDCANCEL = (CButton*)GetDlgItem(IDCANCEL);

    m_pbID_HELP = (CButton*)GetDlgItem(ID_HELP);

    return TRUE; // return TRUE unless you set the focus to a control

CPSheetCase::CPSheetCase(LPCTSTR pszCaption, CWnd* pParentWnd, UINT
    :CPropertySheet(pszCaption, pParentWnd, iSelectPage)
    m_pOsInfo = new (OSVERSIONINFO);
    m_pOsInfo->dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
    //Check if XP Operating System
    bIsWindowsXPorLater = ((m_pOsInfo->dwMajorVersion >5 ) ||
     ( (m_pOsInfo->dwMajorVersion ==5 ) &&
       (m_pOsInfo->dwMinorVersion >=1 ) ) );

    m_pPPage1 = NULL;
    m_pPPage1 = new CPPageCase1;

    m_pPPage2 = NULL;
    m_pPPage2 = new CPPageCase2;

    m_pPPage3 = NULL;
    m_pPPage3 = new CPPageCase3;

    m_pPPage4 = NULL;
    m_pPPage4 = new CPPageCase4;

void CPPageCase1::OnBnClickedPpage()
    CPropertySheet* pParent;
    pParent = static_cast<CPropertySheet*>(GetParent());
// pParent->GetParent()->MessageBox("Shit");
// pParent->MessageBox("Msg1");
// pParent = ::GetParent((HWND)this);



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