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I have a CListCtrl (report style) where I clear the list and repopulate it at certain times. I'd like to maintain the vertical scroll position when doing this. I see there are a couple methods that look promising:
EnsureVisible()
GetScrollPos()
SetScrollPos()
GetScrollInfo()
GetTopIndex()
Scroll()
I'm trying GetScrollPos() and then SetScrollPos() but it doesn't appear to be working. What is the simple correct way to save a scroll position and then later restore it?
UPDATE
Actually it seems I can get to save the scroll position GetScrollPos() and then SetScrollPos() to restore it, however it literally just seems to set the scroll bar position and does not actually scroll the items of my CListCtrl.
UPDATE 2
The Scroll() method seems to correctly scroll the scrollbars and the contents. However it takes a CSize object as it's argument. So the question would be how to translate between the CSize and the output of either GetTopIndex or GetScrollInfo/Pos.
786
We can use the CSS “::-webkit-scrollbar” property which is responsible for changing the shape, color, size, shade, shadow, etc. of the scroll bar. But, here the property which we will use is the direction property of CSS for changing the position of the scroll bar.
To scroll to the top of our tableview we need to create a new IndexPath . This index path has two arguments, row and section . All we want to do is scroll to the top of the table view, therefore we pass 0 for the row argument and 0 for the section argument.
Preserve scroll position allows you to maintain the same scroll location when you transition between two screens. This applies to scroll depth in a vertical scroll, as well as the user's location inside a horizontal scrolling element. Figma automatically preserves your scroll position for Smart Animate.
I've done that in the past. IIRC, the trick consisted in:
int topIndex= m_List.GetTopIndex();
RenewContents();
m_List.EnsureVisible(m_List.GetItemCount() - 1); // Scroll down to the bottom
m_List.EnsureVisible(topIndex);// scroll back up just enough to show said item on top
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