[ListView] No event when (double-)clicking

[littlebigman]

Hello,

This is my first try at the ListView control, and am having some issues. The helpfile didn't help:

1. No event is triggered when I click/double-click
2. How to display a horizontal scrollbar
3. How to enable multi-selection?

Here's the code:

#Region ### START Koda GUI section
$Form1 = GUICreate("My form", 615, 437, 270, 124)
$ListView1 = GUICtrlCreateListView("Date|Title|Guid|URL", 8, 8, 594, 374)
$Button1 = GUICtrlCreateButton("Download", 8, 392, 595, 25)
#EndRegion ### END Koda GUI section ###

For $index = 0 to UBound($mst, $UBOUND_ROWS) - 1
    Local $idItem1 = GUICtrlCreateListViewItem("My date|My title|My GUID|my URL", $ListView1)
Next

GUISetState(@SW_SHOW)

While True
    $nMsg = GUIGetMsg()
    Switch $nMsg
        Case $GUI_EVENT_CLOSE
            Exit
        ;no event when (double-clicking)
        ;how to display hz scrollbar?
        ;how to enable multiselection?
        Case $ListView1
            MsgBox($MB_SYSTEMMODAL, "listview", "clicked=" & GUICtrlGetState($ListView1))
        Case $Button1
            MsgBox($MB_OK,"Button","Dload")
    EndSwitch
WEnd

Thank you.

[Andreik]

expandcollapse popup

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

Global $g_hListView

Example()

Func Example()
        Local $hGUI, $hImage
        $hGUI = GUICreate("ListView Create (v" & @AutoItVersion & ")", 400, 300)

        $g_hListView = _GUICtrlListView_Create($hGUI, "", 2, 2, 394, 268, BitOR($LVS_REPORT, $LVS_SHOWSELALWAYS, $WS_HSCROLL))
        _GUICtrlListView_SetExtendedListViewStyle($g_hListView, BitOR($LVS_EX_GRIDLINES, $LVS_EX_FULLROWSELECT, $LVS_EX_SUBITEMIMAGES))
        GUISetState(@SW_SHOW)

        GUIRegisterMsg($WM_NOTIFY, 'WM_NOTIFY')

        ; Add columns
        _GUICtrlListView_InsertColumn($g_hListView, 0, "Column 1", 100)
        _GUICtrlListView_InsertColumn($g_hListView, 1, "Column 2", 100)
        _GUICtrlListView_InsertColumn($g_hListView, 2, "Column 3", 100)

        ; Add items
        _GUICtrlListView_AddItem($g_hListView, "Row 1: Col 1")
        _GUICtrlListView_AddSubItem($g_hListView, 0, "Row 1: Col 2", 1)
        _GUICtrlListView_AddSubItem($g_hListView, 0, "Row 1: Col 3", 2)
        _GUICtrlListView_AddItem($g_hListView, "Row 2: Col 1")
        _GUICtrlListView_AddSubItem($g_hListView, 1, "Row 2: Col 2", 1)
        _GUICtrlListView_AddItem($g_hListView, "Row 3: Col 1")

        ; Loop until the user exits.
        Do
        Until GUIGetMsg() = $GUI_EVENT_CLOSE
        GUIDelete()
EndFunc   ;==>Example

Func WM_NOTIFY($hWnd, $iMsg, $wParam, $lParam)
        #forceref $hWnd, $iMsg, $wParam
        Local $hWndListView = $g_hListView
        If Not IsHWnd($g_hListView) Then $hWndListView = GUICtrlGetHandle($g_hListView)

        Local $tNMHDR = DllStructCreate($tagNMHDR, $lParam)
        Local $hWndFrom = HWnd(DllStructGetData($tNMHDR, "hWndFrom"))
        Local $iCode = DllStructGetData($tNMHDR, "Code")
        Switch $hWndFrom
                Case $hWndListView
                        Switch $iCode
                                Case $NM_DBLCLK ; Sent by a list-view control when the user double-clicks an item with the left mouse button
                                    $tNMITEMACTIVATE = DllStructCreate($tagNMITEMACTIVATE, $lParam)
                                    ConsoleWrite('Double clicked item: ' & $tNMITEMACTIVATE.Index & @CRLF)
                        EndSwitch
        EndSwitch
        Return $GUI_RUNDEFMSG
EndFunc   ;==>WM_NOTIFY

 

Edited March 29, 2024 by Andreik

[littlebigman]

Thanks. Since that control  is located in the "Win32" section of the toolbar in Koda, I did suspect it might require using different functions to access its full potential, although the helpfile shows the basic functions support clicking on a row at least through the GUICtrlGetState() function:

While 1
  Switch GUIGetMsg()
    Case $GUI_EVENT_CLOSE
            ExitLoop

    Case $idButton
            MsgBox($MB_SYSTEMMODAL, "listview item", GUICtrlRead(GUICtrlRead($idListview)), 2)

    Case $idListview
            MsgBox($MB_SYSTEMMODAL, "listview", "clicked=" & GUICtrlGetState($idListview), 2)

  EndSwitch
WEnd

---

Edit:  Maybe there is a work-around, but it's not as easy to use as the plain GUICtrlCreateListView():

• Doesn't support creating + inserting multiple columns in one go with the "|" sign between columns
• Requires calling _GUICtrlListView_AddItem() to add a row, and then _GUICtrlListView_AddSubItem() to add other columns of that same row
• Doesn't work with the default GUI loop
• Requires registering a WM_NOTIFY()
• WM_NOTIFY() relies on the ListView handle which must be global to be accessible from within that function

Edit: To insert items, there's at least the alternative _GUICtrlListView_AddArray()

 

Edited March 29, 2024 by littlebigman

[Andreik]

You can create a list view and items with native functions and then use _GUICtrlListView_*() functions:

expandcollapse popup

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

Global $cListView

Local $hGUI = GUICreate("ListView Create (v" & @AutoItVersion & ")", 400, 300)
Local $iStyle = BitOR($LVS_REPORT, $LVS_SHOWSELALWAYS, $WS_HSCROLL)
Local $iExStyle = BitOR($LVS_EX_GRIDLINES, $LVS_EX_FULLROWSELECT, $LVS_EX_SUBITEMIMAGES)
$cListView = GUICtrlCreateListView("Col1|Col2|Col3", 2, 2, 394, 268, $iStyle, $iExStyle)
GUISetState(@SW_SHOW)
GUIRegisterMsg($WM_NOTIFY, 'WM_NOTIFY')

GUICtrlCreateListViewItem('Item 0 - Subitem 0|Item 0 - Subitem 1|Item 0 - Subitem 2', $cListView)
GUICtrlCreateListViewItem('Item 1 - Subitem 0|Item 1 - Subitem 1|Item 1 - Subitem 2', $cListView)
GUICtrlCreateListViewItem('Item 2 - Subitem 0|Item 2 - Subitem 1|Item 2 - Subitem 2', $cListView)

_GUICtrlListView_SetColumnWidth($cListView, 0, 120)
_GUICtrlListView_SetColumnWidth($cListView, 1, 120)
_GUICtrlListView_SetColumnWidth($cListView, 2, 120)

Do
Until GUIGetMsg() = $GUI_EVENT_CLOSE
GUIDelete()


Func WM_NOTIFY($hWnd, $iMsg, $wParam, $lParam)
    #forceref $hWnd, $iMsg, $wParam
    Local $hListview
    If Not IsHWnd($cListView) Then $hListview = GUICtrlGetHandle($cListView)

    Local $tNMHDR = DllStructCreate($tagNMHDR, $lParam)
    Local $hWndFrom = HWnd(DllStructGetData($tNMHDR, "hWndFrom"))
    Local $iCode = DllStructGetData($tNMHDR, "Code")
    Switch $hWndFrom
        Case $hListview
            Switch $iCode
                Case $NM_DBLCLK ; Sent by a list-view control when the user double-clicks an item with the left mouse button
                    $tNMITEMACTIVATE = DllStructCreate($tagNMITEMACTIVATE, $lParam)
                    ConsoleWrite('Double clicked item: ' & $tNMITEMACTIVATE.Index & ', Subitem: ' & $tNMITEMACTIVATE.Subitem & @CRLF)
            EndSwitch
    EndSwitch
    Return $GUI_RUNDEFMSG
EndFunc

 

[littlebigman]

Much better, thank you