Clistctrl mfc C++, classe dérivée

J’ai créé une classe dérivée de CListCtrl, mais j’ai un problème..quand je clique sur une ligne, la ligne ne devient pas bleue..et je ne comprends pas pourquoi..ma classe dérivée :

<pre>
#include "stdafx.h"
#include "Domino6.h"
#include "MyListCtrl.h"
#include "MyHeader.h"


// MyListCtrl

IMPLEMENT_DYNAMIC(MyListCtrl, CListCtrl)

MyListCtrl::MyListCtrl()
{
	//m_bList = false;
}

MyListCtrl::~MyListCtrl()
{
}


BEGIN_MESSAGE_MAP(MyListCtrl, CListCtrl)
	ON_NOTIFY_REFLECT(NM_CUSTOMDRAW, OnNMCustomdraw)
END_MESSAGE_MAP()


void MyListCtrl::PreSubclassWindow()
{
	// TODO: Add your specialized code here and/or call the base class
	CHeaderCtrl* pHeader = NULL;
	pHeader = GetHeaderCtrl();
	int nWidth;


	if (m_bList == false)
		nWidth = GetColumnWidth(1);

	else
		nWidth = GetColumnWidth(0);
	
	if (pHeader != NULL)
	{
		//int nWidth = GetColumnWidth(1);
		
		//m_HeaderCtrl.m_nCol = m_nCol;
		VERIFY(m_HeaderCtrl.SubclassWindow(pHeader->m_hWnd)); // m_HeaderCtrl is the new wrapper object
	}
	CListCtrl::PreSubclassWindow();
}
// MyListCtrl message handlers


void MyListCtrl::OnNMCustomdraw(NMHDR *pNMHDR, LRESULT *pResult)
{
	NMLVCUSTOMDRAW *pCD = (NMLVCUSTOMDRAW*)pNMHDR;
	// By default set the return value to do the default behavior.
	*pResult = CDRF_DODEFAULT;

	LPNMCUSTOMDRAW pNMCD = reinterpret_cast<LPNMCUSTOMDRAW>(pNMHDR);
	// TODO: Add your control notification handler code here
	*pResult = CDRF_DODEFAULT;

	int n_width = 0;

	if(m_bList == false)

	n_width = GetColumnWidth(1);

	else

	n_width = GetColumnWidth(0);


	int NumberOfColumns = m_HeaderCtrl.GetItemCount();

	m_HeaderCtrl.m_nwidth_  = GetColumnWidth(0);
	m_HeaderCtrl.m_nwidth1_ = GetColumnWidth(1);
	m_HeaderCtrl.m_nwidth1 = GetColumnWidth(2);
	m_HeaderCtrl.m_nwidth2 = GetColumnWidth(3);
	m_HeaderCtrl.m_nwidth3 = GetColumnWidth(4);
	m_HeaderCtrl.m_nwidth4 = GetColumnWidth(5);
	m_HeaderCtrl.m_nwidth5 = GetColumnWidth(6);

	//obtain row and column of item
	m_nRow = pCD->nmcd.dwItemSpec;
	m_nCol = pCD->iSubItem;

	//Remove standard highlighting of selected (sub)item.
	pCD->nmcd.uItemState = CDIS_DEFAULT;

	switch (pCD->nmcd.dwDrawStage)
	{
	case  CDDS_PREPAINT:  // First stage (for the whole control)
	{
		*pResult = CDRF_NOTIFYITEMDRAW;
	}
	break;

	case CDDS_ITEMPREPAINT:
	{
		*pResult = CDRF_NOTIFYSUBITEMDRAW;
	}
	break;

	case  CDDS_ITEMPREPAINT | CDDS_SUBITEM: // Stage three 
	{
		if (m_bList == true)
		{
			{
				CDC* pDC = CDC::FromHandle(pNMCD->hdc);

				CBrush brushBlue(RGB(255, 192, 203));// inner color blue.
				CBrush* pOldBrush = pDC->SelectObject(&brushBlue);

				// create and select a thick, black pen
				CPen penBlack;
				penBlack.CreatePen(PS_SOLID, 3, RGB(0, 0, 0));// red color with width 3
				CPen* pOldPen = pDC->SelectObject(&penBlack);

				for (int ij = 0; ij < 50; ij++)
				{
					CRect rect1(0, 24 + (17 * (ij)), n_width, 42 + (17 * (ij)));  //CRect(a,b,c,d) come b metto il valore d del rettangolo precedente, invece d = b+18; 
					pDC->Rectangle(rect1);

					if (ij < m_arrStr.GetSize())
					pDC->DrawText(m_arrStr[ij], CRect(rect1), DT_BOTTOM);
				}

				pDC->SelectObject(pOldBrush);
				pDC->SelectObject(pOldPen);
			}
			*pResult = CDRF_NOTIFYPOSTPAINT;
		}
		break;
	case CDDS_ITEMPOSTPAINT | CDDS_SUBITEM: // Stage four (called for each subitem of the focused item)
	{

	}
	break;

	default:// it wasn't a notification that was interesting to us.
	{
		*pResult = CDRF_DODEFAULT;
	}
	break;
	}
  }
}

Ce que j’ai essayé :

J’ai vu que si j’utilise une autre liste qui n’est pas dérivée, je n’ai pas ce problème. pouvez-vous m’aider ?