MFC Hello World program problem

// #define _AFXDLL

#include <afxwin.h>
#include "Hello.h"


CMyApp myApp;

/////////////////////////////////////////////////////////////////////////
// CMyApp member functions

BOOL CMyApp::InitInstance ()
{
    m_pMainWnd = new CMainWindow;
	

   m_pMainWnd->ShowWindow (m_nCmdShow);
    m_pMainWnd->UpdateWindow ();
    return TRUE;
}

/////////////////////////////////////////////////////////////////////////
// CMainWindow message map and member functions

BEGIN_MESSAGE_MAP (CMainWindow, CFrameWnd)
    ON_WM_PAINT ()
END_MESSAGE_MAP ()

CMainWindow::CMainWindow ()
{
    Create (NULL, _T ("The Hello Application"));
}

void CMainWindow::OnPaint ()
{
    CPaintDC dc (this);
    
    CRect rect;
    GetClientRect (&rect);

    dc.DrawText (_T ("Hello, MFC"), -1, &rect,DT_SINGLELINE ¦ DT_CENTER ¦ DT_VCENTER);
}

Hello.h
class CMyApp : public CWinApp
{
public:
    virtual BOOL InitInstance ();
};

class CMainWindow : public CFrameWnd
{
public:
    CMainWindow ();

protected:
    afx_msg void OnPaint ();
    DECLARE_MESSAGE_MAP ()
};

 #error Building MFC application with /MD[d] (CRT dll version) requires MFC shared dll version. Please #define _AFXDLL or do not use /MD[d]