CEdit用了一个垂直居中的类后，如何边框没法改变

CEdit用了一个垂直居中的类后，怎么边框没法改变？
最终效果要垂直左右都居中，失去和获得焦点改变边框及背景颜色。贴代码：

// MyEdit.cpp : 实现文件

//


#include "stdafx.h"

#include "MyEdit.h"



// CMyEdit


IMPLEMENT_DYNAMIC(CMyEdit, CEdit)


CMyEdit::CMyEdit()

{

	m_BkColor = RGB(220,229,240);

	m_TxtColor = RGB(7,83,181);

	m_BkBrush.CreateSolidBrush(m_BkColor);


	m_BkBrush2.CreateSolidBrush(RGB(255,0,0));





	LOGFONT  lf;                   //定义字体结构  

	lf.lfWeight=10;                //字体磅数=10  

	lf.lfHeight=40;                //字体高度56    

	lf.lfWidth=15;                 //字体宽度20  

	lf.lfUnderline=FALSE;          //无下划线  

	lf.lfStrikeOut=FALSE;          //无删除线  

	lf.lfItalic=FALSE;             //非斜体  

	lf.lfEscapement=0;

	lf.lfCharSet=DEFAULT_CHARSET;  //使用缺省字符集  

	_tcscpy_s(lf.lfFaceName,_T("宋体"));  //字体名=@system  


//	CFont myFont;               //定义字体对象  

	m_font.CreateFontIndirect(&lf);  //创建逻辑字体 




	//CEdit::SetFont(&m_font);


}


CMyEdit::~CMyEdit()

{

	m_BkBrush.DeleteObject();

}





BEGIN_MESSAGE_MAP(CMyEdit, CEdit)

	ON_WM_CTLCOLOR_REFLECT()

	ON_CONTROL_REFLECT(EN_CHANGE, &CMyEdit::OnEnChange)

	ON_WM_NCCALCSIZE()

	ON_WM_NCPAINT()

	ON_WM_SETFOCUS()

END_MESSAGE_MAP()



void CMyEdit::SetTextFont()

{

	CEdit::SetFont(&m_font);

	Invalidate(TRUE);

}



void CMyEdit::SetBkColor(COLORREF clr)

{

	m_BkColor = clr;

}

void CMyEdit::SetTxtColor(COLORREF clr)

{

	m_TxtColor = clr;

}


HBRUSH CMyEdit::CtlColor(CDC* pDC, UINT nCtlColor)

{

	pDC ->SetBkMode(TRANSPARENT);

	pDC ->SetTextColor(m_TxtColor);

	m_BkBrush.Detach();

 	m_BkBrush.CreateSolidBrush(m_BkColor);


	CRect rect;

	GetClientRect(rect);

	rect.InflateRect(1,3,3,1);



	pDC ->FrameRect(rect,&m_BkBrush2);


	if(m_rectNCTop.IsRectEmpty())

	{

		SetWindowPos(NULL, 0, 0, 0, 0, SWP_NOOWNERZORDER | SWP_NOSIZE | SWP_NOMOVE | SWP_FRAMECHANGED);

	}

 	return (HBRUSH)m_BkBrush.GetSafeHandle();

}



void CMyEdit::OnEnChange()

{

	Invalidate();

}


void CMyEdit::OnNcCalcSize(BOOL bCalcValidRects, NCCALCSIZE_PARAMS FAR* lpncsp) 

{

	CRect rectWnd, rectClient;


	//calculate client area height needed for a font

	CFont *pFont = GetFont();

	CRect rectText;

	rectText.SetRectEmpty();


	CDC *pDC = GetDC();


	CFont *pOld = pDC->SelectObject(pFont);

	pDC->DrawText(_T("Ky"), rectText, DT_CALCRECT | DT_LEFT);

	UINT uiVClientHeight = rectText.Height();


	pDC->SelectObject(pOld);

	ReleaseDC(pDC);


	//calculate NC area to center text.


	GetClientRect(rectClient);

	GetWindowRect(rectWnd);



	ClientToScreen(rectClient);


	UINT uiCenterOffset = (rectClient.Height() - uiVClientHeight) / 2;

	UINT uiCY = (rectWnd.Height() - rectClient.Height()) / 2;

	UINT uiCX = (rectWnd.Width() - rectClient.Width()) / 2;


	rectWnd.OffsetRect(-rectWnd.left, -rectWnd.top);

	m_rectNCTop = rectWnd;


	m_rectNCTop.DeflateRect(uiCX, uiCY, uiCX, uiCenterOffset + uiVClientHeight + uiCY);


	m_rectNCBottom = rectWnd;


	m_rectNCBottom.DeflateRect(uiCX, uiCenterOffset + uiVClientHeight + uiCY, uiCX, uiCY);


	lpncsp->rgrc[0].top +=uiCenterOffset ;

	lpncsp->rgrc[0].bottom -= uiCenterOffset;


	lpncsp->rgrc[0].left +=uiCX;

	lpncsp->rgrc[0].right -= uiCY;


}


void CMyEdit::OnNcPaint() 

{

	Default();


	CWindowDC dc(this);


	CBrush Brush(m_BkColor);

	dc.FillRect(m_rectNCBottom, &Brush);

	dc.FillRect(m_rectNCTop, &Brush);


	/*CRect rect;

	GetWindowRect(&rect);

	rect.DeflateRect(3,3);

	dc.FrameRect(rect,&m_BkBrush2);*/


}

void CMyEdit::PreSubclassWindow()

{

	ModifyStyle(0,ES_CENTER);

	CEdit::PreSubclassWindow();

}


void CMyEdit::OnSetFocus(CWnd* pOldWnd)

{

	CEdit::OnSetFocus(pOldWnd);

	HDC hDC=::GetWindowDC(m_hWnd);

	CRect rc;

	::GetWindowRect(m_hWnd,&rc);

	rc=CRect(0,0,rc.right-rc.left,rc.bottom-rc.top);