a strange problem with ListView - _GUICtrlListView_GetSelectionMark

[mLipok]

I have a strange problem with ListView. I try to click $iItem_idx = 0

Func _KK_Ksiegowosc_Salda_Zaliczek_SetItemSelected($iItem_idx)
    Local $hListView = Null
    While 1
        $hListView = _KK_Ksiegowosc_Salda_Zaliczek_GetListViewHandle()
        ControlClick($sKK_Title_Ksiegowosc, $sKK_Text_Ksiegowosc_Salda_zaliczek, $sKK_ListView_Class_Ksiegowosc_Salda_Zaliczek)
        _GUICtrlListView_SetItemSelected($hListView, $iItem_idx, True, True)
        _log('_GUICtrlListView_GetSelectionMark 1 = ' & _GUICtrlListView_GetSelectionMark($hListView))
        ControlListView($sKK_Title_Ksiegowosc, $sKK_Text_Ksiegowosc_Salda_zaliczek, $sKK_ListView_Class_Ksiegowosc_Salda_Zaliczek, "Select", $iItem_idx)
        _log('_GUICtrlListView_GetSelectionMark 2 = ' & _GUICtrlListView_GetSelectionMark($hListView))
        _log('ControlListView 1 = ' & ControlListView($sKK_Title_Ksiegowosc, $sKK_Text_Ksiegowosc_Salda_zaliczek, $sKK_ListView_Class_Ksiegowosc_Salda_Zaliczek, "GetSelected", 0))
        _log('ControlListView 2 = ' & ControlListView($sKK_Title_Ksiegowosc, $sKK_Text_Ksiegowosc_Salda_zaliczek, $sKK_ListView_Class_Ksiegowosc_Salda_Zaliczek, "IsSelected", $iItem_idx))
        If _GUICtrlListView_GetSelectionMark($hListView) = $iItem_idx _
                And _
                ControlListView($sKK_Title_Ksiegowosc, $sKK_Text_Ksiegowosc_Salda_zaliczek, $sKK_ListView_Class_Ksiegowosc_Salda_Zaliczek, "GetSelected", 0) = $iItem_idx _
                Then ExitLoop
        _Log('SALDA ZALICZEK: Ponawiam kliknięcie w ListView IDX=' & $iItem_idx)
    WEnd
    _Log('SALDA ZALICZEK: Poprawnie kliknięto w ListView IDX=' & $iItem_idx)
EndFunc   ;==>_KK_Ksiegowosc_Salda_Zaliczek_SetItemSelected

my log is:

Quote

......
--> _GUICtrlListView_GetSelectionMark 1 = 1
--> _GUICtrlListView_GetSelectionMark 2 = 1
--> ControlListView 1 = 0
--> ControlListView 2 = 1
......

 

 

And this is repeating all the time..... until ...... when I manually click this first ListView row then I get:

Quote

--> _GUICtrlListView_GetSelectionMark 1 = 1
--> _GUICtrlListView_GetSelectionMark 2 = 1
--> ControlListView 1 = 0
--> ControlListView 2 = 1
--> _GUICtrlListView_GetSelectionMark 1 = 0
--> _GUICtrlListView_GetSelectionMark 2 = 0
--> ControlListView 1 = 0
--> ControlListView 2 = 1
--> SALDA ZALICZEK: Poprawnie kliknięto w ListView IDX=0

 

The question is:
Why I must manually click on this ListView row, to get:

--> _GUICtrlListView_GetSelectionMark 1 = 0
--> _GUICtrlListView_GetSelectionMark 2 = 0

???

 

 Remark #1:

as you can see I use in a loop:

Func _KK_Ksiegowosc_Salda_Zaliczek_SetItemSelected($iItem_idx)
    While 1
        ..........
        _GUICtrlListView_SetItemSelected($hListView, $iItem_idx, True, True)
        _log('_GUICtrlListView_GetSelectionMark 1 = ' & _GUICtrlListView_GetSelectionMark($hListView))
        ..........
    WEnd
EndFunc   ;==>_KK_Ksiegowosc_Salda_Zaliczek_SetItemSelected

so I also check the result of _GUICtrlListView_SetItemSelected() and it was True

 

EDIT:  Remark #2:
This problem is not repeating in 100% of cases.
Sometimes exist, sometimes not......

Edited April 3, 2019 by mLipok

[Deye]

maybe its in the case of: Returns the previous selection mark, or -1 if there is no previous selection mark.

 https://docs.microsoft.com/en-us/windows/desktop/Controls/lvm-setselectionmark

To have some control over its behavior when you want to deliberately reset it yourself

_GUICtrlListView_SetSelectionMark($hWnd, -1)

 

Edited April 3, 2019 by Deye

[mLipok]

LVM_SETSELECTIONMARK is used in _GUICtrlListView_SetSelectionMark() 
But I not use this function.