Codejock Developer Community : CXTTreeCtrl mutli selection problems http://forum.codejock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Thu, 30 Apr 2026 21:31:48 +0000 Wed, 16 Jan 2008 05:27:53 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 forum.codejock.com/RSS_post_feed.asp?TID=7826 <![CDATA[Codejock Developer Community]]> http://forum.codejock.com/forum_images/codejock-logo.gif http://forum.codejock.com/ <![CDATA[CXTTreeCtrl mutli selection problems : Thank you. I have found a similar...]]> http://forum.codejock.com/forum_posts.asp?TID=7826&PID=30167&title=cxttreectrl-mutli-selection-problems#30167 Author: Alex
Subject: 7826
Posted: 16 January 2008 at 5:27am

Thank you.
 
I have found a similar solution.
 
Regards,
Alex
]]> Wed, 16 Jan 2008 05:27:53 +0000 http://forum.codejock.com/forum_posts.asp?TID=7826&PID=30167&title=cxttreectrl-mutli-selection-problems#30167 <![CDATA[CXTTreeCtrl mutli selection problems : Hi,I did find a way to get around...]]> http://forum.codejock.com/forum_posts.asp?TID=7826&PID=30155&title=cxttreectrl-mutli-selection-problems#30155 Author: scottp
Subject: 7826
Posted: 15 January 2008 at 9:01pm

Hi,

I did find a way to get around this by filtering out focus changes in OnSelectionChange.

BOOL CMyTreeCtrl::OnSelectionChange (NMHDR* pNMHDR, LRESULT* pResult)
  {
  NMTREEVIEW* pTv;
  pTv = (NMTREEVIEW*)pNMHDR;
  *pResult = 0;

  HTREEITEM hFocusedItem = GetFocusedItem ();
  HTREEITEM hNewItem = pTv->itemNew.hItem;
  HTREEITEM hOldItem = pTv->itemOld.hItem;
  if ( !hFocusedItem && hOldItem && !hNewItem )
    {
    // then me must have a Focus change and we don't want to process this as a selection change.
    }
  else
    {
    if (hNewItem)
      {
       CMyTreeItem* pData = GetMyTreeItem (hNewItem);
       //select item
      }
    if (hOldItem)
      {
      CMyTreeItem* pData = GetMyTreeItem (hOldItem);
      // deselect item
      }
    }

Hope this helps

]]> Tue, 15 Jan 2008 21:01:02 +0000 http://forum.codejock.com/forum_posts.asp?TID=7826&PID=30155&title=cxttreectrl-mutli-selection-problems#30155 <![CDATA[CXTTreeCtrl mutli selection problems : Hi, could you solve this problem...]]> http://forum.codejock.com/forum_posts.asp?TID=7826&PID=30063&title=cxttreectrl-mutli-selection-problems#30063 Author: Alex
Subject: 7826
Posted: 11 January 2008 at 5:26pm

Hi,
 
could you solve this problem ?
 
I have the same problem...
 
Regards.
Alex
]]> Fri, 11 Jan 2008 17:26:40 +0000 http://forum.codejock.com/forum_posts.asp?TID=7826&PID=30063&title=cxttreectrl-mutli-selection-problems#30063 <![CDATA[CXTTreeCtrl mutli selection problems : We are using the CXTTreeCtrl in...]]> http://forum.codejock.com/forum_posts.asp?TID=7826&PID=25218&title=cxttreectrl-mutli-selection-problems#25218 Author: scottp
Subject: 7826
Posted: 17 August 2007 at 10:24am

We are using the CXTTreeCtrl in multi-select mode and have found that tracking the items being selected and deselected using the TVN_SELCHANGED message does not work when selecting multiple items using CTRL and SHIFT. The visual appearance of the trees selection is correct but it is impossible to track the changes.

I have attached a modified TreeCtrl sample that helps show the problem (use the multiselect tree) - message boxes will popup to show which items are being selected and deselected.

uploads/20070817_102009_TreeCtrl_Sample.zip

Test scenario 1:
  1. Select item 1
    1. notified that item 1 is selected
  2. CTRL select item 2
    1. notified that item 1 is deselected
    2. notified that item 2 is selected
Test scenario 2:
  1. Select item 1
    1. notified that item 1 is selected
  2. SHIFT select item 3
    1. notified that item 1 is deselected
    2. notified that item 2,3 are selected
Both Vista and XP show similar behaviour (although on Vista the tree seems to send more TVN_SELCHANGED notifications).




]]> Fri, 17 Aug 2007 10:24:09 +0000 http://forum.codejock.com/forum_posts.asp?TID=7826&PID=25218&title=cxttreectrl-mutli-selection-problems#25218