Tree view icon not appearing for grandchild rows

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    I have a grid that has a row, plus child rows. The first column is hidden and contains an ID, the second column contains a checkbox, and the third column is the expand/collapse icon for child records. There are additional columns for data. This works as expected. 
Now I need to add another child level (ex. Parent/Child/Grandchild). I can add the rows to the child row, but they don't appear. I can set the Expanded property of the child row and then the grandchild records appear. However, in both cases I don't see the expand/collapse option that I see for the first parent/child set.
The (pseudo) code basically looks like this:

* ID column
col =  Columns.Add(0, "", 0, False)
col.Visible = False

* Checkbox column
col = Columns.Add(1, "", 20, False)
col.Tag = "check"

* Tree +/- column
col = Columns.Add(2, "", 20, False)
col.Tag = "tree"
col.TreeColumn = True

* The rest of the columns are added here

* First-level row
rec = Records.Add()
* ID row item
rec.AddItem(0)

* Checkbox row item
item = rec.AddItem("")
item.HasCheckBox = True

* Placeholder for +/-
item = Rec.AddItem("")

* The rest of the row items are added here

* Add children
recsub = rec.Childs.Add()
recsub.AddItem(0)

* Additional row items added here

* Add grandchild
gc = recsub.Childs.Add()

* Additional data here

Any ideas where I might be going wrong? Is there some additional property I need to set somewhere?

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paulm_wlc Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 17 June 2013 Status: Offline Points: 6	Post Options Post Reply Quote paulm_wlc Report Post Thanks(0) Quote Reply Topic: Tree view icon not appearing for grandchild rows Posted: 28 April 2015 at 9:35am
	I have a grid that has a row, plus child rows. The first column is hidden and contains an ID, the second column contains a checkbox, and the third column is the expand/collapse icon for child records. There are additional columns for data. This works as expected. Now I need to add another child level (ex. Parent/Child/Grandchild). I can add the rows to the child row, but they don't appear. I can set the Expanded property of the child row and then the grandchild records appear. However, in both cases I don't see the expand/collapse option that I see for the first parent/child set. The (pseudo) code basically looks like this: * ID column col = Columns.Add(0, "", 0, False) col.Visible = False * Checkbox column col = Columns.Add(1, "", 20, False) col.Tag = "check" * Tree +/- column col = Columns.Add(2, "", 20, False) col.Tag = "tree" col.TreeColumn = True * The rest of the columns are added here * First-level row rec = Records.Add() * ID row item rec.AddItem(0) * Checkbox row item item = rec.AddItem("") item.HasCheckBox = True * Placeholder for +/- item = Rec.AddItem("") * The rest of the row items are added here * Add children recsub = rec.Childs.Add() recsub.AddItem(0) * Additional row items added here * Add grandchild gc = recsub.Childs.Add() * Additional data here Any ideas where I might be going wrong? Is there some additional property I need to set somewhere?

paulm_wlc Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 17 June 2013 Status: Offline Points: 6	Post Options Post Reply Quote paulm_wlc Report Post Thanks(0) Quote Reply Posted: 30 April 2015 at 9:50am
	Well this was dumb. I ended up setting up a really simplified version of the form in my app and everything worked great. After going back and forth between the sample form and my real form I suddenly realized my +/- column on my real form wasn't wide enough to display the +/- box for the grandchild; it was there I just couldn't see it. Duh. Widening that column fixed the issue.