Re: TreeView.Item.Reparent wont add the arrow

[Gianluigi <gradobag@xxxxxxxxxxx>]

Il 21/05/24 15:44, Bruce Steers ha scritto:
> On Tue, 21 May 2024 at 14:18, Gianluigi <gradobag@xxxxxxxxxxx
> <mailto:gradobag@xxxxxxxxxxx>> wrote:
>
>     Il 21/05/24 14:57, Bruce Steers ha scritto:
>      > What DragNDrop example?
>      > Does it use the Reparent method to move parents?
>      >
>      > BruceS
>
>     The example that is in Gambas's basic examples:
>     https://gitlab.com/gambas/gambas/-/tree/master/app/examples/Basic?ref_type=heads <https://gitlab.com/gambas/gambas/-/tree/master/app/examples/Basic?ref_type=heads>
>     Does not use reparent, but I understood that you were asking for another
>     way to do it
>
>
> No i was asking if there was a way to make the arrow appear when using
> Reparent.
>
> After some more tinkering i have found reparent does make an arrow
> appear if one of the items already has children so at least one arrow is
> already showing.
>
> But using Reparent when there are no arrows yet does not refresh to show
> the arrows.
>
> I attach a simple example.
>
> it is a prefilled tree with 10 root items, no children.
>
> Drag n drop an item on to another and it puts it into the item you
> dropped it on.
>
> At the bottom there is a check box that makes a reparent happen by
> Add/Delete method not by Reparent.
>
> When you run the program and drag-drop an item If the checkbox is not
> selected the arrow does not appear.
>
> But if you select the checkbox so add/remove method is used the arrow
> does appear.
> You can then de-select the checkbox so re-parent is used and arrows then
> DO appear.
>
> The treeview updates it's layout somehow to show arrows and once updated
> it works as expected. but Reparent does not seem to trigger this update.
>
> So i think , yes , it's a bug.
>
> BruceS

and if you add this?:

...
  If Not CheckBox1.Value Then
    TreeView1[Drag.Item].Reparent(TreeView1.Item.Key)
    TreeView1.Item.ExpandAll
  Else
...

Regards
Gianluigi