Solved

Determining which hTreeItem's check box was clicked in CTreeCtrl

Posted on 2002-06-04
5
1,001 Views
Last Modified: 2013-11-20
It seems that the only way to "catch" a check box click in a CTreeCtrl is to override the OnClick() method. The only problem is that it does not give you any info back as to whick hTree item's check box was clicked on.

Does anybody have an idea how this can be done?

I've read about the CCheckListBox control, which could probably also work, but it seems like such an effert to get it going.
0
Comment
Question by:Claude050897
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
  • 2
5 Comments
 
LVL 4

Expert Comment

by:mblat
ID: 7054355
Did you try to use HitTest after OnClick() ?
0
 
LVL 4

Accepted Solution

by:
mblat earned 200 total points
ID: 7054421
This code seems to work:

#include "windowssx.h"

// handler of NM_CLICK message
CMyDlg::OnClickTree(......)
{
  DWORD dw = GetMessagePos();
  CPoint pt(GET_X_LPARAM(dw),GET_Y_LPARAM(dw));
  m_Tree.ScreenToClient(&pt);
 
  UINT flags;
  HTREEITEM hItem = m_Tree.HitTest(pt,&flags);
 
  if(hItem)
    TRACE("%s\n",m_Tree.GetItemText(hItem));

  *pResult = 0;
}

Couple notes:  m_Tree member var. represents tree in your dialog.
I didn't copy/paste, so typos is possible...

Hope it helps...
0
 
LVL 2

Expert Comment

by:venkaiah
ID: 7055666
Hi Friend,
Write the following code in OnClick()
{
    POSITION pos=GetFirstSelectedItemPos();
    if(pos != NULL)
    {
    int nIndex=GetNextSelectedItem(pos);
    //This Index will tell u.which item u click
    }
}
0
 
LVL 2

Expert Comment

by:venkaiah
ID: 7055679
Hi Friend,
Write the following code in OnClick()
{
  HTREEITEM hItem = pmyTreeCtrl->GetSelectedItem();
}

0
 

Author Comment

by:Claude050897
ID: 7055727
Thanks! Did not know about GetMessagePos()

The only typo in here is #include "windowsx.h" not #include "windowssx.h"

Thanks again!
0

Featured Post

On Demand Webinar: Networking for the Cloud Era

Did you know SD-WANs can improve network connectivity? Check out this webinar to learn how an SD-WAN simplified, one-click tool can help you migrate and manage data in the cloud.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction: Dialogs (2) modeless dialog and a worker thread.  Handling data shared between threads.  Recursive functions. Continuing from the tenth article about sudoku.   Last article we worked with a modal dialog to help maintain informat…
Have you tried to learn about Unicode, UTF-8, and multibyte text encoding and all the articles are just too "academic" or too technical? This article aims to make the whole topic easy for just about anyone to understand.
This video will show you how to get GIT to work in Eclipse.   It will walk you through how to install the EGit plugin in eclipse and how to checkout an existing repository.
There are cases when e.g. an IT administrator wants to have full access and view into selected mailboxes on Exchange server, directly from his own email account in Outlook or Outlook Web Access. This proves useful when for example administrator want…

691 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question