How can I do up and down icos in clistctrl in C++ (mfc) by using keyboard keys instead of mouse ?

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C++

I am displaying a images in Clistctrl i want display images by up and down keys. I have Forward and backward key code..

What I have tried:

void MainPage::OnKeyList(NMHDR* pNMHDR, LRESULT* pResult)
{

LV_KEYDOWN* pLVKeyDow = (LV_KEYDOWN*)pNMHDR;


if (pLVKeyDow->wVKey == VK_LEFT || pLVKeyDow->wVKey == VK_RIGHT )
{

int nTotal = m_listCrl->GetItemCount();


if (nTotal == 0)
{
*pResult = 1;
return;
}


int nNewItem = -1;


if (pLVKeyDow->wVKey == VK_LEFT)//For Left Arrow Key
{
if (m_nSelectedItem > 0)
nNewItem = m_nSelectedItem - 1;
}
else // right arrow
{
if (m_nSelectedItem < nTotal-1)
nNewItem = m_nSelectedItem + 1;
}
if (nNewItem != -1)
{

m_nSelectedItem = nNewItem;

DrawSelectedImage();
}
}

// high-light the selected item
*pResult = 0;
}