onTimer() not trigger [closed] - c++

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I have an issue with OnTimer() function of Modeless Dialog window (who is a child window of CDialogEx window) ,it refuse to trigger.
When i make the dialog Modal with CDialog::DoModal() function its working fine.
But i want Modeless Dialog.
Could you explain me what happen here .
I try to be accurate. The ClogoDlg Dialog is a SPLASH window of the application .It showing for 3 minutes, in the middle the program running Lengthy Operation. The SPLASH window displays a duration of time. Therefor i want the OnTimer() function.
Thanks .
my code is:
BOOL Clotto2Dlg::OnInitDialog()
{
CDialogEx::OnInitDialog();
ClogoDlg* pdlg=new ClogoDlg();
pdlg->Create(GetDesktopWindow());
//pdlg->DoModal();
pdlg->ShowWindow(SW_SHOW);
}
My ClogoDlg.cpp
#include "stdafx.h"
#include "ClogoDlg.h"
IMPLEMENT_DYNAMIC(ClogoDlg, CDialog)
ClogoDlg::ClogoDlg(CWnd* pParent ) : CDialog(ClogoDlg::IDD, pParent)
{
}
ClogoDlg::~ClogoDlg()
{
KillTimer(m_nTimer);
}
BOOL ClogoDlg::Create(CWnd* pParentWnd)
{
// TODO: Add your specialized code here and/or call the base class
return CDialog::Create(ClogoDlg::IDD,pParentWnd);
}
BEGIN_MESSAGE_MAP(ClogoDlg, CDialog)
ON_WM_LBUTTONDOWN()
ON_WM_LBUTTONDBLCLK()
ON_WM_PAINT()
ON_WM_TIMER()
END_MESSAGE_MAP()
void ClogoDlg::OnLButtonDown(UINT nFlags, CPoint point)
{
// TODO: Add your message handler code here and/or call default
Invalidate();
CDialog::OnLButtonDown(nFlags, point);
}
void ClogoDlg::OnLButtonDblClk(UINT nFlags, CPoint point)
{
// TODO: Add your message handler code here and/or call default
CDialog::OnLButtonDblClk(nFlags, point);
}
BOOL ClogoDlg::OnInitDialog()
{
CDialog::OnInitDialog();
// TODO: Add extra initialization here
m_nTimer = SetTimer(2, 1000, NULL);
return TRUE; // return TRUE unless you set the focus to a control
// EXCEPTION: OCX Property Pages should return FALSE
}
BOOL ClogoDlg::PreTranslateMessage(MSG* pMsg)
{
// TODO: Add your specialized code here and/or call the base class
return CDialog::PreTranslateMessage(pMsg);
}
void ClogoDlg::OnPaint()
{
CPaintDC dc(this); // device context for painting
// TODO: Add your message handler code here
// Do not call CDialog::OnPaint() for painting messages
CTime timeNow;
timeNow = CTime::GetCurrentTime();
CString str;
str.Format(L"%3d:%2d:%2d", timeNow.GetHour(), timeNow.GetMinute(), timeNow.GetSecond());
dc.TextOut(10,10, str);
}
void ClogoDlg::OnTimer(UINT_PTR nIDEvent)
{
// TODO: Add your message handler code here and/or call default
Invalidate();
CDialog::OnTimer(nIDEvent);
}
And my ClogoDlg.h
#pragma once
#include "resource.h"
class ClogoDlg:public CDialog
{
DECLARE_DYNAMIC(ClogoDlg)
public:
enum{IDD=IDD_LOGO};
ClogoDlg();
~ClogoDlg();
BOOL Create(CWnd * pParent = NULL);
CTime timer;
int m_nTimer;
DECLARE_MESSAGE_MAP()
afx_msg void OnLButtonDown(UINT nFlags, CPoint point);
afx_msg void OnLButtonDblClk(UINT nFlags, CPoint point);
virtual BOOL OnInitDialog();
virtual BOOL PreTranslateMessage(MSG* pMsg);
afx_msg void OnPaint();
afx_msg void OnTimer(UINT_PTR nIDEvent);
};