Cannot hilight a single selected cell in a ListView

[AndyS01]

I have a listview item with 4 columns and I want to hilight the cell (row,col) that I click on.

I have WM_NOTIFY code that detects the click, but I cannot get the single cell to be hilighted. It only hilights column 0 in any of the rows.

here is my test code:

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#AutoIt3Wrapper_au3check_parameters=-d -w 1 -w 2 -w 3 -w 4 -w 5 -w 6
#include <GuiConstantsEx.au3>
#include <WindowsConstants.au3>
#include <GuiListView.au3>
Opt('MustDeclareVars', 1)
Opt("GUIOnEventMode", 1) ; Change to OnEvent mode
Global $hMainWin, $hListView_Hwnd
_Main()
 
Func _Main()
Local $flags = 0, $xflags = 0, $str, $x
 
$hMainWin = GUICreate("Main", 450, 160)
 
$flags = BitOR($flags, $LVS_REPORT)
$flags = BitOR($flags, $LVS_SHOWSELALWAYS)
$xflags = BitOR($xflags, $LVS_EX_GRIDLINES)
$xflags = BitOR($xflags, $LVS_EX_DOUBLEBUFFER)
$hListView_Hwnd = GUICtrlCreateListView("", 1, 1, 445, 150, $flags, $xflags)
 
For $x = 0 To 3
  _GUICtrlListView_InsertColumn($hListView_Hwnd, $x, "Col " & $x, 100)
Next
 
For $x = 0 To 9
  $str = StringFormat("L%dC0|L%dC1|L%dC2|L%dC3", $x, $x, $x, $x)
  GUICtrlCreateListViewItem($str, $hListView_Hwnd)
Next
 
GUISetState()
 
GUIRegisterMsg($WM_NOTIFY, "WM_NOTIFY")
GUISetOnEvent($GUI_EVENT_CLOSE, "Event_GUIClose")
Do
Until GUIGetMsg() = $GUI_EVENT_CLOSE
GUIDelete()
EndFunc   ;==>_Main
 
Func WM_NOTIFY($hWnd, $msg, $wparam, $lparam)
#forceref  $hWnd, $Msg, $wParam, $lParam
Local $tNMBHOTITEM, $nNotifyCode, $hCtrl, $selrow, $selcol, $ar
 
$tNMBHOTITEM = DllStructCreate("hwnd hWndFrom;int IDFrom;int Code;dword dwFlags", $lparam)
$nNotifyCode = DllStructGetData($tNMBHOTITEM, "Code")
$hCtrl = DllStructGetData($tNMBHOTITEM, "hWndFrom")
 
Switch $nNotifyCode
  Case $NM_CLICK
   $ar = _GUICtrlListView_SubItemHitTest($hCtrl)
   $selrow = $ar[0]
   $selcol = $ar[1]
   ConsoleWrite("+++: $NM_CLICK - row " & $selrow & ", col " & $selcol & @CRLF)
 
  Case $NM_DBLCLK
   $ar = _GUICtrlListView_SubItemHitTest($hCtrl)
   $selrow = $ar[0]
   $selcol = $ar[1]
   ConsoleWrite("+++: $NM_DBLCLK - row " & $selrow & ", col " & $selcol & @CRLF)
EndSwitch
 
Return $GUI_RUNDEFMSG
EndFunc   ;==>WM_NOTIFY
 
Func Event_GUIClose()
Exit (0)
EndFunc   ;==>Event_GUIClose

[martin]

Search for NM_CUSTOMDRAW and you will find examples.

[Melba23]

AndyS01,

How about this as a simple workaround - needs polishing but it proves the concept:

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#include <GUIConstantsEx.au3>
#include <WindowsConstants.au3>
#include <GuiListView.au3>
#include <Constants.au3>
#Include <GuiEdit.au3>

Global $iOffset_X = 10, $iOffset_Y = 1
Global $fClick = False, $hLabel

$GUI = GUICreate("Test", 500, 500)

$ListView = _GUICtrlListView_Create($GUI, "Col 0|Col 1", $iOffset_X, $iOffset_Y, 480, 480)

For $i = 0 To 4
    $iIndex = _GUICtrlListView_AddItem($ListView, "TEST" & $i)
    _GUICtrlListView_AddSubItem($ListView, $iIndex, "TEST1" & $i, 1)
Next

_GUICtrlListView_SetColumnWidth($ListView, 0, 240)
_GUICtrlListView_SetColumnWidth($ListView, 1, $LVSCW_AUTOSIZE_USEHEADER)

$GUIshow = GUISetState()

GUIRegisterMsg($WM_NOTIFY, "_WM_NOTIFY")                       ; For click on ListView

While 1

    Switch GUIGetMsg()
        Case $GUI_EVENT_CLOSE
            Exit
    EndSwitch

    ; If a ListView was clicked
    If $fClick Then
        $aHit = _GUICtrlListView_SubItemHitTest($ListView)
        If $aHit[0] <> -1 Then
            _HighLight()
        EndIf
        $fClick = False
    EndIf

WEnd

Func _HighLight()

    ; Prevent resizing of columns
    ControlDisable($GUI, "", HWnd(_GUICtrlListView_GetHeader($ListView)))
    ; Get current text
    $sItemOrgText = _GUICtrlListView_GetItemText($ListView, $aHit[0], $aHit[1])
    ; Get size of Label
    Local $aRect = _GUICtrlListView_GetSubItemRect($ListView, $aHit[0], $aHit[1])
    ; Delete any existing Label
    GUICtrlDelete($hLabel)
    ; Cretae a new label
    $hLabel = GUICtrlCreateLabel($sItemOrgText, $aRect[0] + $iOffset_X + 5, $aRect[1] + $iOffset_Y, _GUICtrlListView_GetColumnWidth($ListView, $aHit[1]) - 7, $aRect[3] - $aRect[1], Default, $WS_EX_TOPMOST)
    GUICtrlSetBkColor(-1, 0xFF0000)
    GUICtrlSetColor(-1, 0xFFFFFF)

EndFunc

Func _WM_NOTIFY($hWnd, $iMsg, $wParam, $lParam)

    #forceref $hWnd, $iMsg, $wParam

    Local $tNMHDR = DllStructCreate($tagNMHDR, $lParam)
    Local $hWndFrom = HWnd(DllStructGetData($tNMHDR, "hWndFrom"))
    Local $iCode = DllStructGetData($tNMHDR, "Code")
    ; Check if a ListView has sent the message
    If $hWndFrom = $ListView Then
        Switch $iCode
            Case $NM_CLICK
                ; Set flag
                $fClick = True
        EndSwitch
    EndIf

    Return $GUI_RUNDEFMSG

EndFunc

I hope it helps.

M23

[AndyS01]

That headed me in the right direction. Thanks