ctreectrl to clistbox

[the-griff]

I want to convert my current tree to a list format.

example
Tree:
+Group One
|---One
|---Two
|---Three
|---Four
+Group Two
|---A
|---B
|---C
|---D

to

List:

Group One
One
Two
Three
Four
Group Two
A
B
C
D


I am pretty sure i have to create a loop and call GetItemText(), but i am not sure how to properly do this.

PS Please post an example (not that advanced programer).

[Shehzad_Salim]

In CTreeCtrl u have a function GetNextItem with flag TVGN_ROOT

insert this item in listbox or listctrl

then call funcion ItemHasChildren it will return that either this item has child item's or not...

if it has childern then call GetNextItem with flag TVGN_CHILD

repeat this process untill u get NULL from GetNextItem

[siawos]

check this.....

[the-griff]

so far i have got this code

HTREEITEM hItem, hRootItem, hNextItem;



hRootItem = m_tree.GetNextItem(hItem,TVGN_ROOT);

if (hRootItem)
	m_list.AddString(m_tree.GetItemText(hRootItem));

	if (m_tree.ItemHasChildren(hRootItem)){

		while (hNextItem = m_tree.GetNextItem(hRootItem, TVGN_CHILD)){

			m_list.AddString(m_tree.GetItemText(hNextItem));
		}
	}

but m_tree.GetNextItem(hRootItem, TVGN_CHILD) is never returning null (making it a infinite loop)

[gstercken]

Originally posted by the-griff
but m_tree.GetNextItem(hRootItem, TVGN_CHILD) is never returning null (making it a infinite loop)

Yes, because GetNextItem() with TVGN_CHILD will always return the first child of hRootItem. You should get only the first child, and then call GetNextItem() with TVGN_NEXT in your loop to get the next sibling.

[the-griff]

TVGN_NEXT also results in a infinite loop

[gstercken]

That's strange. Can you post your code? And BTW: If you use TVGN_NEXTVISIBLE, you don't need any recursion and changing between next child / next sibling: Just walk through your tree using TVGN_NEXTVISIBLE and starting at the root, and you will get a linear list of all items as they appear in the hierarchy.

[the-griff]

HTREEITEM hRootItem, hNextItem;
hRootItem = m_tree.GetNextItem(hRootItem,TVGN_ROOT);
m_list.AddString(m_tree.GetItemText(hRootItem));

while (true){
hNextItem = m_tree.GetNextItem(hRootItem, TVGN_NEXTVISIBLE );
m_list.AddString(m_tree.GetItemText(hNextItem));

if (!hNextItem)
break;

}

[the-griff]

K I got it semi working now:

void CHlmp3ListDlg::OnCreate() 
{
	m_list.ResetContent();
	HTREEITEM hRootItem=NULL, hItem = m_tree.GetNextItem(hRootItem,TVGN_ROOT);

	while (hItem != NULL)
	{
		
		if (m_tree.GetCheck(hItem)){
			m_list.AddString(m_tree.GetItemText(hItem));
		}

		hItem = m_tree.GetNextItem(hItem,TVGN_NEXTVISIBLE);
	}

}

but it will only add the string if the item is checked and it is visiablly expanded.