check which item is selected in a ListView control

[Zomp]

Which is the simplest way to check which item is selected in a ListView control just after it has been selected?

I would not want to use a loop to scan every item in the ListView, but I have also recognized that I cannot use the identifier of the ListView with GUIGetmsg().

I have read in some past threads on this forum some examples which use the GUIRegisterMsg($WM_NOTIFY,...) function. Can I ask if there is something simpler?

At present I'm using the following lines just after a select ... endselect code about GUIGetmsg():

$ItemLine=stringsplit(Guictrlread(GUICtrlRead($ViewListControlInGUI),0),"|")
$ItemName=$ItemLine[1]

Edited August 29, 2008 by Zomp

[Zedna]

expandcollapse popup

#NoTrayIcon 
#include <GUIConstants.au3>
#include <GUIListView.au3>

$Form1 = GUICreate("Test", 300, 200)
$ListView1 = GUICtrlCreateListView("A|B|C", 5, 5, 290, 175, BitOR($LVS_REPORT,$LVS_SINGLESEL,$LVS_SHOWSELALWAYS,$LVS_NOLABELWRAP,$WS_HSCROLL,$WS_VSCROLL,$WS_BORDER), BitOR($WS_EX_CLIENTEDGE,$LVS_EX_CHECKBOXES,$LVS_EX_FULLROWSELECT))
GUICtrlCreateListViewItem('r1c1|r1c2|r1c3', $ListView1)
GUICtrlCreateListViewItem('r2c1|r2c2|r2c3', $ListView1)
GUICtrlCreateListViewItem('r3c1|r3c2|r3c3', $ListView1)
$status1 = GUICtrlCreateLabel("", 0, 183, 300, 17, $WS_GROUP, $WS_EX_CLIENTEDGE)
GUISetState(@SW_SHOW)

GUIRegisterMsg($WM_NOTIFY, "WM_Notify_Events")

While 1
 $nMsg = GUIGetMsg()
 Switch $nMsg
    Case $GUI_EVENT_CLOSE
        Exit
 EndSwitch
WEnd

Func WM_Notify_Events($hWndGUI, $MsgID, $wParam, $lParam)
 #forceref $hWndGUI, $MsgID, $wParam
 Local $NMHDR, $NMLVDISPINFO, $NMLISTVIEW, $event
 
 $NMHDR = DllStructCreate($tagNMHDR, $lParam)
 $event = DllStructGetData($NMHDR, 'Code')
 
 If $hWndGUI = $Form1 And $wParam = $ListView1 Then
    Select
        Case $LVN_ITEMCHANGED
            $NMLISTVIEW = DllStructCreate($tagNMLISTVIEW, $lParam)
            If BitAND(DllStructGetData($NMLISTVIEW, "Changed"), $LVIF_STATE) = $LVIF_STATE And _
                DllStructGetData($NMLISTVIEW, "NewState") <> DllStructGetData($NMLISTVIEW, "OldState") Then OnStateChange()
    EndSelect
 EndIf
 Return $GUI_RUNDEFMSG
EndFunc

Func OnStateChange()
 $cur_sel = _GUICtrlListView_GetNextItem($ListView1) ; current selected
 $count_sel = _GUICtrlListView_GetSelectedCount($ListView1)
 $count = _GUICtrlListView_GetItemCount($ListView1)
 
 GUICtrlSetData($status1, 'Current selected: ' & $cur_sel & ' Total selected: ' & $count_sel & ' Total items: ' & $count)
EndFunc

Edited August 29, 2008 by Zedna

[Reekod]

expandcollapse popup

#NoTrayIcon 
#include <GUIConstants.au3>
#include <GUIListView.au3>

$Form1 = GUICreate("Test", 300, 200)
$ListView1 = GUICtrlCreateListView("A|B|C", 5, 5, 290, 175, BitOR($LVS_REPORT,$LVS_SINGLESEL,$LVS_SHOWSELALWAYS,$LVS_NOLABELWRAP,$WS_HSCROLL,$WS_VSCROLL,$WS_BORDER), BitOR($WS_EX_CLIENTEDGE,$LVS_EX_CHECKBOXES,$LVS_EX_FULLROWSELECT))
GUICtrlCreateListViewItem('r1c1|r1c2|r1c3', $ListView1)
GUICtrlCreateListViewItem('r2c1|r2c2|r2c3', $ListView1)
GUICtrlCreateListViewItem('r3c1|r3c2|r3c3', $ListView1)
$status1 = GUICtrlCreateLabel("", 0, 183, 300, 17, $WS_GROUP, $WS_EX_CLIENTEDGE)
GUISetState(@SW_SHOW)

GUIRegisterMsg($WM_NOTIFY, "WM_Notify_Events")

While 1
 $nMsg = GUIGetMsg()
 Switch $nMsg
    Case $GUI_EVENT_CLOSE
        Exit
 EndSwitch
WEnd

Func WM_Notify_Events($hWndGUI, $MsgID, $wParam, $lParam)
 #forceref $hWndGUI, $MsgID, $wParam
 Local $NMHDR, $NMLVDISPINFO, $NMLISTVIEW, $event
 
 $NMHDR = DllStructCreate($tagNMHDR, $lParam)
 $event = DllStructGetData($NMHDR, 'Code')
 
 If $hWndGUI = $Form1 And $wParam = $ListView1 Then
    Select
        Case $LVN_ITEMCHANGED
            $NMLISTVIEW = DllStructCreate($tagNMLISTVIEW, $lParam)
            If BitAND(DllStructGetData($NMLISTVIEW, "Changed"), $LVIF_STATE) = $LVIF_STATE And _
                DllStructGetData($NMLISTVIEW, "NewState") <> DllStructGetData($NMLISTVIEW, "OldState") Then OnStateChange()
    EndSelect
 EndIf
 Return $GUI_RUNDEFMSG
EndFunc

Func OnStateChange()
 $cur_sel = _GUICtrlListView_GetNextItem($ListView1) ; current selected
 $count_sel = _GUICtrlListView_GetSelectedCount($ListView1)
 $count = _GUICtrlListView_GetItemCount($ListView1)
 
 GUICtrlSetData($status1, 'Current selected: ' & $cur_sel & ' Total selected: ' & $count_sel & ' Total items: ' & $count)
EndFunc

Wich Auto-it version are using to use this code ?

i got Always this error message :

\DEV\LDAP\GUI_DEVEX.au3(9,141) : WARNING: $WS_HSCROLL: possibly used before declaration.

$ListView1 = GUICtrlCreateListView("A|B|C", 5, 5, 290, 175, BitOR($LVS_REPORT,$LVS_SINGLESEL,$LVS_SHOWSELALWAYS,$LVS_NOLABELWRAP,$WS_HSCROLL,

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^

\DEV\LDAP\GUI_DEVEX.au3(9,153) : WARNING: $WS_VSCROLL: possibly used before declaration.

$ListView1 = GUICtrlCreateListView("A|B|C", 5, 5, 290, 175, BitOR($LVS_REPORT,$LVS_SINGLESEL,$LVS_SHOWSELALWAYS,$LVS_NOLABELWRAP,$WS_HSCROLL,$WS_VSCROLL,

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^

\LDAP\GUI_DEVEX.au3(9,164) : WARNING: $WS_BORDER: possibly used before declaration.

$ListView1 = GUICtrlCreateListView("A|B|C", 5, 5, 290, 175, BitOR($LVS_REPORT,$LVS_SINGLESEL,$LVS_SHOWSELALWAYS,$LVS_NOLABELWRAP,$WS_HSCROLL,$WS_VSCROLL,$WS_BORDER)

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^

\DEV\LDAP\GUI_DEVEX.au3(9,190) : WARNING: $WS_EX_CLIENTEDGE: possibly used before declaration.

$ListView1 = GUICtrlCreateListView("A|B|C", 5, 5, 290, 175, BitOR($LVS_REPORT,$LVS_SINGLESEL,$LVS_SHOWSELALWAYS,$LVS_NOLABELWRAP,$WS_HSCROLL,$WS_VSCROLL,$WS_BORDER), BitOR($WS_EX_CLIENTEDGE,

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^

\DEV\LDAP\GUI_DEVEX.au3(13,61) : WARNING: $WS_GROUP: possibly used before declaration.

$status1 = GUICtrlCreateLabel("", 0, 183, 300, 17, $WS_GROUP,

Edited August 4, 2011 by Reekod

[guinness]

A simple search in the Help would have led you to use #include <WindowsConstants.au3> as the 3rd include.