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From: PaulH on 22 Mar 2005 18:45
How do you make a clistctrl (or a subclassed derivative of one) not scroll
its background image?

I've been using something similiar to this to load the image:
LVBKIMAGE image;
// If no background image is set for the list view control
if (m_list.GetBkImage(&image) && (bki.ulFlags == LVBKIF_SOURCE_NONE))
{
m_list.SetBkImage(LoadBitmap(AfxGetInstanceHandle(),
MAKEINTRESOURCE(IDB_BITMAP1)), FALSE);
}

Thanks for your assistance!
From: PaulH on 23 Mar 2005 14:37
I've had a little luck with this now... It's not perfect, though. The image
jitters slightly, but it stays in place relatively well... My "solution" (if
you can call it that) is below. I overrode the "onscroll" handler for the
CListCtrl, and told it to reposition the image. Unfortunately, there's some
funniness in that the distance to the origin is a float, and I can only give
an integer value to SetBkImage(). So, I made up for it by alternatly moving 1
less than the distance. This causes the slight jitter effect.

If anybody has a way to fix this, or a better solution, in general. Please,
let me know.

void CMyDlg::OnLvnBeginScrollList1(NMHDR *pNMHDR, LRESULT *pResult)
{
LPNMLVSCROLL pStateChanged = reinterpret_cast<LPNMLVSCROLL>(pNMHDR);

static bool bAlt = false;
LVBKIMAGE image;
CRect rcItem;
m_list.GetItemRect(m_list.GetTopIndex(), &rcItem, LVIR_BOUNDS);
m_list.GetBkImage(&image);

int yOffset = pStateChanged->dy * (bAlt ? rcItem.Height() :
(rcItem.Height() - 1));
int xOffset = pStateChanged->dx * (bAlt ? rcItem.Width() : (rcItem.Width()
- 1));

m_list.SetBkImage(LoadBitmap(AfxGetInstanceHandle(),
MAKEINTRESOURCE(IDB_BITMAP1)), FALSE, image.xOffsetPercent + xOffset,
image.yOffsetPercent + yOffset);
bAlt = !bAlt;

*pResult = 0;
}
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