Get last item in branch


In my programming, I have often had to derive the last item in a branch. In fact some of the other topics I cover, uses this function to get the last item in the branch.
 
// GetLastItem  - Gets last item in the branch
// Returns      - Last item
// hItem        - Node identifying the branch. NULL will 
//                return the last item in outine
HTREEITEM CTreeCtrlX::GetLastItem( HTREEITEM hItem )
{
        // Last child of the last child of the last child ...
        HTREEITEM htiNext;

        if( hItem == NULL ){
                // Get the last item at the top level
                htiNext = GetRootItem();
                while( htiNext ){
                        hItem = htiNext;
                        htiNext = GetNextSiblingItem( htiNext );
                }
        }

        while( ItemHasChildren( hItem ) ){
                htiNext = GetChildItem( hItem );
                while( htiNext ){
                        hItem = htiNext;
                        htiNext = GetNextSiblingItem( htiNext );
                }
        }

        return hItem;
}



Comments

  • Little problem ???

    Posted by Legacy on 11/05/1998 12:00am

    Originally posted by: Patrice Lacroix

    I believe I found a problem in this method.
    
    

    Please correct me if I'm wrong or if I am not using this method correctly.

    If I am searching for a string in the tree and this string is
    currently selected, the method will return NULL.

    Should I check before I call the method ?

    Here is what I did to correct it:

    // For the first pass, set the current item equal to the selection
    HTREEITEM htiSel = hItem ? hItem : GetSelectedItem();
    HTREEITEM htiCur = htiSel;

    ...
    ...
    // For the first pass only, we check to see if it
    // is the item we're looking for.
    BOOL bFirstPass = TRUE;

    while( htiCur && (htiCur != htiSel || bFirstPass) )
    {
    bFirstPass = FALSE;
    ...
    ...
    ...
    }

    ...
    ...
    ...

    Please, tell me if you have a better way to do it.

    Reply
Leave a Comment
  • Your email address will not be published. All fields are required.

Top White Papers and Webcasts

  • Complex hybrid environments can make it difficult to track interdependencies, increasing the risk of disrupting critical business services. In this white paper by EMA, you'll learn how application discovery and dependency mapping can help you: Meet granular targets for availability, cost, and time-to-revenue for cloud services. Accelerate mean time to repair (MTTR) while communicating better with stakeholders. Manage even the most complex hybrid environments more efficiently and effectively Understand the …

  • Rocket Mobile® for IBM i is an enterprise mobile application development and deployment platform for customers who rely on the IBM i system. Rocket Mobile for IBM i enables customers to leave proven applications in-place and rapidly repurpose them into new managed and secure mobile applications. Fast, easy creation of mobile, web, and hybrid mobile applications that deploy to any iOS, Android, or Windows mobile phone or tablet Built-in integration for seamless repurposing of existing IBM i applications …

Most Popular Programming Stories

More for Developers

RSS Feeds

Thanks for your registration, follow us on our social networks to keep up-to-date