Listview Insert Column 0

[pixelsearch]

Hi everybody
Concerning listview controls, I thought that it was possible to insert a column 0 at the very left side of the listview.
Unfortunately the following script shows that it's not possible.

#include <GUIConstantsEx.au3>
#include <GuiListView.au3>

Example()

Func Example()
    GUICreate("Insert col 0", 280, 180)

    Local $idListview = GUICtrlCreateListView("Col 1 |Col 2 |Col 3 ", 30, 25, 215, 100)
    Local $idItem1 = GUICtrlCreateListViewItem("cell-1a|cell-2a|cell-3a", $idListview)
    Local $idItem2 = GUICtrlCreateListViewItem("cell-1b|cell-2b|cell-3b", $idListview)
    Local $idItem3 = GUICtrlCreateListViewItem("cell-1c|cell-2c|cell-3c", $idListview)
    Local $idButton = GUICtrlCreateButton("Insert col 0", 100, 140, 70, 20)

    GUISetState(@SW_SHOW)

    While 1
        Switch GUIGetMsg()
            Case $GUI_EVENT_CLOSE
                ExitLoop

            Case $idButton
                _GUICtrlListView_InsertColumn($idListview, 0, "Col 0")
                GUICtrlSetState($idButton, $GUI_DISABLE)                
        EndSwitch
    WEnd
EndFunc   ;==>Example

That's (probably) what means the sentence found in the help file, topic GUICtrlListView_InsertColumn :
"The alignment of the leftmost column is always left-justified; it cannot be changed"

But well... "left-justified" usually means : "to align text along the left margin"
Using terms like "alignment" and "left justify" seems a bit confusing in this case as we're not talking about text, so if there's no other of way to do it natively, I'll insert a column having an index equal to 1, then drag its header at the very left.

Is it the recommended way to insert an empty column at the very left ?
Thanks

[Danp2]

What version of Autoit are you using? This is what I get when I run your code --

For me, it's like a column header was inserted at the designated spot.

[Musashi]

23 minutes ago, Danp2 said:

This is what I get when I run your code

I get the same result (AutoIt 3.3.14.0). With $iIndex>0 it works as expected.

[pixelsearch]

Thanks for your both answers
I'm using Autoit last official version 3.3.14.5

@Danp2 : the result in your image looks even worse than mine, as all your headers are shifted and don't correspond to the original columns anymore. As you wrote :

3 hours ago, Danp2 said:

it's like a column header was inserted at the designated spot.

But it's not what the script is intended to do as we wanted a blank column to be inserted at the left side of the listview control. Here are a couple of other tests I just did :

* These 2 lines are equivalent and give same correct result :

_GUICtrlListView_AddColumn($idListview, "Col 4")
_GUICtrlListView_InsertColumn($idListview, 3, "Col 4")

* And this one is ok too :

_GUICtrlListView_InsertColumn($idListview, 1, "Col 1x")

It seems like we shouldn't mess with column 0 and never use _GUICtrlListView_InsertColumn($idListview, 0, ...) when the lisview has already been populated.

As I wrote in the 1st post, inserting "Col 1x" (as in the pic just above) then dragging its header to the very left will do the job : a blank column will be added at the left side.

OK, I'll have a quick look at Microsoft forums to see if anyone faced the same initial issue and let you know.

Edited December 30, 2019 by pixelsearch

[Professor_Bernd]

Hello.

This is probably because a ListView consists of Items (first row left) and these Items have SubItems (all other rows).

The (Main-)Item is the root of each row. Maybe this is why it cannot be moved.

Bernd.