MFC重绘对话框的边框和绘制圆角

说明：以下方法也是在网上查的，自己已实现。

第一步：重载DefWindowProc(UINT message, WPARAM wParam, LPARAM lParam)

LRESULT CMyTestDlg::DefWindowProc(UINT message, WPARAM wParam, LPARAM lParam)
{
	// TODO: 在此添加专用代码和/或调用基类
	LRESULT lResult = CDialog::DefWindowProc(message, wParam, lParam);

	CWnd* pWnd=this->GetParent();
	m_hWnd = pWnd->m_hWnd;
	if (!::IsWindow(m_hWnd))
    {
        return lResult;
    }
		
	if (message==WM_MOVE||message==WM_PAINT||message==WM_NCPAINT||message==WM_NCACTIVATE ||message == WM_NOTIFY)
	{
		CDC* pWinDC = GetWindowDC();
		if (pWinDC)
        {
            DrawBorder(pWinDC);
        }
        else
        {
            ReleaseDC(pWinDC);
        }
	}
	return lResult;
	//return CDialog::DefWindowProc(message, wParam, lParam);
}

第二步：处理画边函数

void CMyDlg::DrawBorder(CDC *pDC)
{
	if (m_hWnd )
	{
		CBrush Brush(RGB(185, 184, 182));
		CBrush* pOldBrush = pDC->Se