Problem at drawing 256 color Icons in CListCtrl

From:

"Frank Isensee" <frank-isensee@web.de>

Newsgroups:

microsoft.public.vc.mfc

Date:

4 Jul 2006 08:41:09 -0700

Message-ID:

<1152027669.075032.236860@75g2000cwc.googlegroups.com>

Hi,
i modify my existing code to draw 256 color icons instead of 16 color.
I find here in NG some example, but it does not working correctly: The
background color is always white. Can anyone give me a hint?
Here is the code (i add more than one bitmap in a loop into the
imagelist because more than one column contains icons, it works with 16
color icons perfectly), it is compiled under VC6:

for (i = m_iImageColumnCount = 0;i < m_iColumnCount;++i)
{
int iStartindex = -1;

if (m_viImageID[i])
{
    HBITMAP hBitmap = (HBITMAP)::LoadImage(::AfxGetInstanceHandle(),
                   MAKEINTRESOURCE(m_viImageID[i]),
                   IMAGE_BITMAP,
                   0,16,LR_LOADTRANSPARENT);
   ASSERT(hBitmap != NULL);

   CBitmap bmp;
   bmp.Attach(hBitmap);

   if (m_iImageColumnCount++ == 0)
   {
        iStartindex = 0;
        m_cImageList.Create(32,16,ILC_COLOR8,1,1);
   }
   else
       iStartindex = m_cImageList.GetImageCount();

   m_cImageList.Add(&bmp,RGB(255,0,255));

   bmp.DeleteObject();
   }

m_viImageStartindex[i] = iStartindex;
}

SetImageList(&m_cImageList,TVSIL_NORMAL);

##### And here is the draing code in OnPaint() ######

COLORREF rgb = m_cImageList.GetBkColor();

// set image list background color
m_cImageList.SetBkColor(crBkgnd);
m_cImageList.DrawIndirect(pDC, nImage, point, size, CPoint(0, 0));
m_cImageList.SetBkColor(rgb);

###############

In the bitmaps which IDs are adressed with m_viImageID[i] the
background color is magenta (255,0,255) also the upper left corner.

Thanx for any help!!!

Greetings from Frank