Listbox DropObjectOnRow wrong row parameter?

General
1

Please see this sample project.
Drag e.g. row 2 to the place of row 1 (drag line between “folder” and “row 1” appears).
The row parameter in the DropObjectOnRow event is 0.
Am I understanding anything wrong here or is this a bug?
In my opinion the row parameter should be 1.

https://drive.google.com/open?id=1r2UnAVqo5ENwNmwZhl7PAcNUlYvJSo8V

2

Listbox rows are 0-based, so 0 is row 1 in view.

3

Please look at the example and follow my steps.

4

Yes, you return a 0-based value, so you get 0 instead of 1.

No, it returns -1 when you release the drag before folder1… (top of the Listbox).

And I do not understand what happens.

I have to read the Hierarchical Listbox paragraph in the LR.

I found nothing, sorry.

5

The location parameter may be the issue It’s set to “AfterRow” so the drop should happen after row 0.

6

You could alter your code to the following to see the different locations that can be passed in:

Select Case location
Case listbox.DropLocations.AfterAllRows
  MsgBox "add row after all rows"
Case listbox.DropLocations.AfterRow
  MsgBox "add row after rowindex = " + CStr(row)
Case listbox.DropLocations.OnControl
  MsgBox "drop occurred ON control"
Case listbox.DropLocations.OnRow
  MsgBox "add row to rowindex = " + CStr(row)
End Select
7

Works on standard Row and in the original project, if you drop a Row before Row 0, the returned value is -1.
(from inside a hierarchical Row or not: I inserted 3 Rows before the original folder row).

8

I experienced the very same thing, till I noticed the location parameter as @Jason Parsley points out. Everything works fine after I handled that.