Re: CListCtrl derived class and disabling item selection

"AliR \(VC++ MVP\)" <AliR@online.nospam>
Fri, 16 Feb 2007 15:44:31 GMT
Keep in mind that if you don't let it draw the focus rect around a disabled
item, and if the user is using the keyboard to move around, he will loose
track of where he is at.


"German Koninin" <> wrote in message

I used
to completely remove selection.

Thank you all

"AliR (VC++ MVP)" <AliR@online.nospam> wrote in message

Oh One more thing, when you are unselecting an item but you still want
the focus rect around the item then you might want to do this instead
if (....)


   //disable the item but still draw the focus rect




"AliR (VC++ MVP)" <AliR@online.nospam> wrote in message

Here is how I would do it. I would catch the LVN_ITEMCHANGED message
for the list ctrl and check to see if the item is being selected. If it
is and it is disabled then I would simply unselected it.

//every other item is disabled!
BOOL CMyListCtrl::IsItemDisabled(UINT ItemID)
  return ItemID % 2 != 0;

void CMyListCtrl::OnLvnItemchanged(NMHDR *pNMHDR, LRESULT *pResult)
   //if item is being selected and is diabled
  if (IsItemDisabled(pNMLV->iItem) && (pNMLV->uNewState & LVIS_SELECTED)
       //unselect it!
  *pResult = 0;


"German Koninin" <> wrote in message

Hello everybody.
I have a CListCtrl derived class wich is also owner draw. Now I need to
disable selecting items. So user should be able to see the list and be
able to scroll it and everything. But selecting items should be
disabled. I wrote a handle for OnLButtonDown which give me an
opportunity to handle mouse button clicking and so user can't select
the item by mouse. But it is still possible by arrows. I tried to
handle VKeyToItem but it aseems never get called. So in my case how can
I disable selecting items by arrows also. Or is there any better way to
do that all together?
PS: I was looking for some properties for a CListCtrl but didn't find
anything useful.

German Koninin

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