Edit control on focus redrawing issue

#pragma once

class CMyEdit : public CEdit
{
public:
    CMyEdit()
        : m_HasFocus(false)
    {
    }

    bool m_HasFocus;

    afx_msg void OnSetFocus(CWnd* pOldWnd);
    afx_msg void OnKillFocus(CWnd* pNewWnd);
    DECLARE_MESSAGE_MAP()
};

class Cmfc_testDlg : public CDialog
{
public:
    Cmfc_testDlg(CWnd* pParent = NULL); // standard constructor

    enum { IDD = IDD_MFC_TEST_DIALOG };

    protected:
    virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support


protected:
    CMyEdit m_Edit;
    CBrush m_RedBrush;

    virtual BOOL OnInitDialog();
    afx_msg HBRUSH OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor);
    DECLARE_MESSAGE_MAP()
};


#include "stdafx.h"
#include "mfc_test.h"
#include "mfc_testDlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#endif

Cmfc_testDlg::Cmfc_testDlg(CWnd* pParent /*=NULL*/)
    : CDialog(Cmfc_testDlg::IDD, pParent)
{
}

void Cmfc_testDlg::DoDataExchange(CDataExchange* pDX)
{
    DDX_Control(pDX, IDC_EDIT1, m_Edit);

    CDialog::DoDataExchange(pDX);
}

BEGIN_MESSAGE_MAP(CMyEdit, CEdit)
    ON_WM_SETFOCUS()
    ON_WM_KILLFOCUS()
END_MESSAGE_MAP()

BEGIN_MESSAGE_MAP(Cmfc_testDlg, CDialog)
    ON_WM_PAINT()
    ON_WM_QUERYDRAGICON()
    ON_WM_CTLCOLOR()
END_MESSAGE_MAP()

BOOL Cmfc_testDlg::OnInitDialog()
{
    CDialog::OnInitDialog();

    m_RedBrush.CreateSolidBrush(RGB(255, 0, 0));

    return TRUE;
}

HBRUSH Cmfc_testDlg::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor)
{
    if (pWnd->GetSafeHwnd() == m_Edit.GetSafeHwnd() && m_Edit.m_HasFocus) {
        pDC->SetBkColor(RGB(255, 0, 0));
        return m_RedBrush;
    }

    return CDialog::OnCtlColor(pDC, pWnd, nCtlColor);
}

void CMyEdit::OnSetFocus(CWnd* pOldWnd)
{
    m_HasFocus = true;

    CEdit::OnSetFocus(pOldWnd);
}

void CMyEdit::OnKillFocus(CWnd* pNewWnd)
{
    m_HasFocus = false;

    CEdit::OnKillFocus(pNewWnd);
}