Images in ListControl are not Clear in MFC SDI application

Question

I am working on one MFC/SDI project Where I am using CListView as a default View.

But the thing is, I have applied ImageList to the CListCtrl but these Images are not clearly displayed. As shown in the picture below.

Below is the code for creating new image List.

Creating ImageList where m_ImgList is a member of CImageList.

if(m_ImgList->m_hImageList == NULL || m_ImgList->DeleteImageList() == TRUE)
{
    m_ImgList->Create(16,16, ILC_COLOR,0, 1);
}

Then I am creating images by using BLOB data from database. Here, pByte is BYTE* to hold BLOB Data.

HGLOBAL hGlobal = ::GlobalAlloc(GMEM_MOVEABLE, nbytes+5);
LPVOID pV = GlobalLock(hGlobal);
memcpy(pV, pByte, nbytes);
GlobalUnlock(hGlobal);
LPSTREAM pstm = NULL;
HRESULT hr = CreateStreamOnHGlobal(hGlobal, TRUE, &pstm);
CImage image;
image.Load(pstm);

if (image == NULL)
{
   image.Load(NILIMAGE);                    
}

CPaintDC dc(this);
CDC pMDC;

pMDC.CreateCompatibleDC(&dc);
CBitmap pb;
pb.CreateCompatibleBitmap(&dc, iNewWidth, iNewHeight);
CBitmap *pob = (CBitmap*)pMDC.SelectObject(&pb);
image.StretchBlt(pMDC.m_hDC,0, 0, iNewWidth, iNewHeight,
                     0, 0, image.GetWidth(), image.GetHeight(), SRCCOPY);
pMDC.SelectObject(pob);

Adding images to the image list

if((m_ImgList->Add(&pb, RGB(0,0,0)))== -1)
{
    _T("undone");
}
if(hGlobal != NULL)
  ::GlobalFree(hGlobal);

Can anyone tell me how can I do that? Thank you in Advance. and Sorry for bad English.