Cannot set just 1 listview column's color

AndyS19 · August 11, 2017

I have a listview with 3 columns and I want to set the 3rd column's color based on the item's 'Param' value, but even though I set up for the 3rd column, the entire row always gets the color.

My test code is below, but here is the pertinent code:

Func WM_NOTIFY($hWnd, $iMsg, $iwParam, $ilParam)
    #forceref $hWnd, $iMsg, $iwParam, $ilParam
    Local $hWndFrom, $iCode, $tNMHDR
    $tNMHDR = DllStructCreate($tagNMHDR, $ilParam)
    $hWndFrom = HWnd(DllStructGetData($tNMHDR, "hWndFrom"))
    $iCode = DllStructGetData($tNMHDR, "Code")
    Switch $hWndFrom
        Case $hListView
            Switch $iCode
                Case $NM_CUSTOMDRAW
                    Local $iDrawStage, $tCustDraw
                    $tCustDraw = DllStructCreate($tagNMLVCUSTOMDRAW, $ilParam)
                    $iDrawStage = DllStructGetData($tCustDraw, 'dwDrawStage')
                    Switch $iDrawStage
                        Case BitOR(0, $CDDS_ITEMPREPAINT) ;, $CDDS_SUBITEM)
                            setItemColor($tCustDraw, $hWndFrom)
                            Return $CDRF_NOTIFYSUBITEMDRAW
                    EndSwitch
            EndSwitch
    EndSwitch

    Return $GUI_RUNDEFMSG
EndFunc   ;==>WM_NOTIFY

Func setItemColor($tCustDraw, $hWnd)
    Local $iIndex, $color, $iSubitem

    $iIndex = DllStructGetData($tCustDraw, 'dwItemSpec') ; item number
    $color = _GUICtrlListView_GetItemParam($hWnd, $iIndex)
    $iSubitem = DllStructGetData($tCustDraw, 'iSubItem')
    
    ; Here, I want to only change the color of the 3rd col, and not the 1st and 2nd cols
    DllStructSetData($tCustDraw, 'iSubItem', 2) ; always use the 3rd column (the 'sample' col)
    
    logmsg("+++: setItemColor($tCustDraw, 0x" & Hex($hWnd) & ") entered ... " _
    & ", $iIndex = " & $iIndex & ", $iSubItem = " & $iSubitem & ", $color = " & Hex($color))

    DllStructSetData($tCustDraw, 'clrText', $color) ; set the Text color
    DllStructSetData($tCustDraw, 'clrTextBk', bitnot($color)) ; set the background color
EndFunc   ;==>setItemColor

Func logmsg($msg, $lnum = @ScriptLineNumber)
    ConsoleWrite("+++:" & $lnum & ": " & $msg & @CRLF)
EndFunc   ;==>logmsg

Here is the full test code:

#include-once

;#cs
#NoTrayIcon
#AutoIt3Wrapper_UseUpx=n
#AutoIt3Wrapper_Au3Check_Parameters=-d -w 1 -w 2 -w 3 -w 4 -w 5 -w 6
#AutoIt3Wrapper_UseX64=N

Opt("GUICloseOnESC", 1) ; ESC closes GUI? (0 = no, 1 = yes)
Opt("GUIOnEventMode", 1) ; Change to OnEvent mode
Opt('MustDeclareVars', 1)
OnAutoItExitRegister("_test_exit")
Opt("GUIEventOptions", 1) ;0=default, 1=just notification, 2=GuiCtrlRead tab index
Opt("WinTitleMatchMode", -2) ;1=start, 2=subStr, 3=exact, 4=advanced, -1 to -4=Nocase

#include <GuiListBox.au3>
#include <ListViewConstants.au3>
#include <GuiListView.au3>
#include <WindowsConstants.au3>
#include <GUIConstantsEx.au3>
#include <ColorConstants.au3>

Global $__MCP_obj, $__MCP_GUI_hWnd, $idListView, $hListView

Global $hMainWin

test()
Exit

Func test()
    $hMainWin = GUICreate("Test window", 120, 100, @DesktopWidth / 2, -1)

    GUICtrlCreateButton("Hwnd", 10, 10, 40, 20)
    GUICtrlSetOnEvent(-1, "handle_1stTEST_btn")

    GUICtrlCreateButton("ID", 50, 10, 40, 20)
    GUICtrlSetOnEvent(-1, "handle_2ndTEST_btn")

    GUISetOnEvent($GUI_EVENT_CLOSE, "_test_exit")

    GUISetState(@SW_SHOW)

    While (1)
        Sleep(17)
    WEnd

EndFunc   ;==>test

Func _myColorPicker($obj)
    logmsg("+++: $obj = 0x" & Hex($obj) & @CRLF)
    Local $flags = 0
    Local $ww, $wh, $x, $y, $w, $h

    $__MCP_obj = $obj

    $ww = 350
    $wh = 500
    $x = 200
    $y = 150
    $__MCP_GUI_hWnd = GUICreate("myColorPicker", $ww, $wh, $x, $y, $flags)

    $x = 10
    $y = 10
    $w = 150
    $h = 20
    GUICtrlCreateButton("Set caller's color", $x, $y, $w, $h)
    GUICtrlSetOnEvent(-1, "__MCP_handle_SetColor_btn")

    $y += $h + 5
    $w = $ww - 25
    $h = $wh - 100
    $idListView = GUICtrlCreateListView("", $x, $y, $w, $h, -1, BitOR($LVS_EX_GRIDLINES, $LVS_EX_FULLROWSELECT))
    $hListView = GUICtrlGetHandle($idListView)

    $x = $ww / 2 - 50
    $y = $wh - 60
    $w = 100
    $h = 25
    GUICtrlCreateButton("Quit Popup", $x, $y, $w, $h)
    GUICtrlSetOnEvent(-1, "__MCP_handle_QUIT_btn")

    GUICtrlSetFont($idListView, 8.5, -1, -1, "courier new")

    _GUICtrlListView_AddColumn($idListView, "Name", 100)
    _GUICtrlListView_AddColumn($idListView, "Value", 100)
    _GUICtrlListView_AddColumn($idListView, "Sample", 100)
    _GUICtrlListView_SetColumnWidth($idListView, 0, 100)
    _GUICtrlListView_SetColumnWidth($idListView, 1, 80)

    logmsg("+++: $idListView = " & $idListView)
    logmsg("+++: $hListView = 0x" & Hex($hListView))

    __MCP_populateListView($hListView)

    GUIRegisterMsg($WM_NOTIFY, "WM_NOTIFY")

    GUISetState(@SW_SHOW, $__MCP_GUI_hWnd)

EndFunc   ;==>_myColorPicker

Func WM_NOTIFY($hWnd, $iMsg, $iwParam, $ilParam)
    #forceref $hWnd, $iMsg, $iwParam, $ilParam
    Local $hWndFrom, $iCode, $tNMHDR
    $tNMHDR = DllStructCreate($tagNMHDR, $ilParam)
    $hWndFrom = HWnd(DllStructGetData($tNMHDR, "hWndFrom"))
    $iCode = DllStructGetData($tNMHDR, "Code")
    Switch $hWndFrom
        Case $hListView
            Switch $iCode
                Case $NM_CUSTOMDRAW
                    Local $iDrawStage, $tCustDraw
                    $tCustDraw = DllStructCreate($tagNMLVCUSTOMDRAW, $ilParam)
                    $iDrawStage = DllStructGetData($tCustDraw, 'dwDrawStage')
                    Switch $iDrawStage
                        Case BitOR(0, $CDDS_ITEMPREPAINT) ;, $CDDS_SUBITEM)
                            setItemColor($tCustDraw, $hWndFrom)
                            Return $CDRF_NOTIFYSUBITEMDRAW
                    EndSwitch
            EndSwitch
    EndSwitch

    Return $GUI_RUNDEFMSG
EndFunc   ;==>WM_NOTIFY

Func setItemColor($tCustDraw, $hWnd)
    Local $iIndex, $color, $iSubitem

    $iIndex = DllStructGetData($tCustDraw, 'dwItemSpec') ; item number
    $color = _GUICtrlListView_GetItemParam($hWnd, $iIndex)
    $iSubitem = DllStructGetData($tCustDraw, 'iSubItem')
    
    ; Here, I want to only change the color of the 3rd col, and not the 1st and 2nd cols
    DllStructSetData($tCustDraw, 'iSubItem', 2) ; always use the 3rd column (the 'sample' col)
    
    logmsg("+++: setItemColor($tCustDraw, 0x" & Hex($hWnd) & ") entered ... " _
    & ", $iIndex = " & $iIndex & ", $iSubItem = " & $iSubitem & ", $color = " & Hex($color))

    DllStructSetData($tCustDraw, 'clrText', $color) ; set the Text color
    DllStructSetData($tCustDraw, 'clrTextBk', bitnot($color)) ; set the background color
EndFunc   ;==>setItemColor

Func logmsg($msg, $lnum = @ScriptLineNumber)
    ConsoleWrite("+++:" & $lnum & ": " & $msg & @CRLF)
EndFunc   ;==>logmsg

Func __MCP_exit()
    GUIDelete($__MCP_GUI_hWnd)
EndFunc   ;==>__MCP_exit

Func __MCP_handle_SetColor_btn()
    If (IsHWnd($__MCP_obj)) Then
        GUISetBkColor($COLOR_BLUE, $__MCP_obj)
    Else
        GUICtrlSetBkColor($__MCP_obj, $COLOR_BLUE)
    EndIf
EndFunc   ;==>__MCP_handle_SetColor_btn

Func __MCP_populateListView($hWnd)
    Local $text, $parts, $iIndex

    Local Static $aItems[] = [ _
            "BLACK      | " & $CLR_BLACK & "|" & "", _
            "BLUE       | " & $CLR_BLUE & "|" & "", _
            "RED        | " & $CLR_RED & "|" & "", _
            "WHITE      | " & $CLR_WHITE & "|" & "", _
            "YELLOW     | " & $CLR_YELLOW & "|" & "" _
            ]

    _GUICtrlListView_BeginUpdate($hWnd)
    _GUICtrlListView_DeleteAllItems($hWnd)

    For $ndx = 0 To UBound($aItems) - 1
        $text = $aItems[$ndx]
        $parts = StringSplit($text, "|", 2)
        $parts[0] = StringStripWS($parts[0], 3)
        $parts[2] = StringStripWS($parts[2], 3)

        $iIndex = _GUICtrlListView_AddItem($hWnd, $parts[0], -1, $parts[1])
        _GUICtrlListView_AddSubItem($hWnd, $iIndex, Hex($parts[1]), 1)
        _GUICtrlListView_AddSubItem($hWnd, $iIndex, $parts[0], 2)
    Next

    _GUICtrlListView_EndUpdate($hWnd)
EndFunc   ;==>__MCP_populateListView

Func __MCP_handle_QUIT_btn()
    GUIDelete($__MCP_GUI_hWnd)
EndFunc   ;==>__MCP_handle_QUIT_btn

Func handle_1stTEST_btn()
    _myColorPicker($hMainWin)
EndFunc   ;==>handle_1stTEST_btn

Func handle_2ndTEST_btn()
    _myColorPicker(@GUI_CtrlId)
EndFunc   ;==>handle_2ndTEST_btn

Func _test_exit()
    Exit
EndFunc   ;==>_test_exit

Danyfirex · August 14, 2017

hello. Something like this should work...

#include <GUIConstantsEx.au3>
#include <GuiImageList.au3>
#include <GuiListView.au3>
#include <WindowsConstants.au3>
#include <GuiListView.au3>
Global $oListView = 0
Example()

Func Example()
    Local $hImage

    ; Create GUI
    GUICreate("ListView Add SubItem", 400, 300)
    $oListView = GUICtrlCreateListView("", 2, 2, 394, 268, -1, BitOR($LVS_EX_FULLROWSELECT, $LVS_EX_SUBITEMIMAGES))

    GUIRegisterMsg($WM_NOTIFY, "WM_NOTIFY")
    GUISetState(@SW_SHOW)

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

    Local $aItems[] = [ _
            "BLACK      | " & $CLR_BLACK & "|" & "", _
            "BLUE       | " & $CLR_BLUE & "|" & "", _
            "RED        | " & $CLR_RED & "|" & "", _
            "WHITE      | " & $CLR_WHITE & "|" & "", _
            "YELLOW     | " & $CLR_YELLOW & "|" & "" _
            ]

    _GUICtrlListView_BeginUpdate($oListView)
    _GUICtrlListView_DeleteAllItems($oListView)

    For $ndx = 0 To UBound($aItems) - 1
        $text = $aItems[$ndx]
        $parts = StringSplit($text, "|", 2)
        $parts[0] = StringStripWS($parts[0], 3)
        $parts[2] = StringStripWS($parts[2], 3)
        $iIndex = _GUICtrlListView_AddItem($oListView, $parts[0], -1, $parts[1])
        _GUICtrlListView_AddSubItem($oListView, $iIndex, Hex($parts[1]), 1)
        _GUICtrlListView_AddSubItem($oListView, $iIndex, $parts[0], 2)
    Next

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


Func WM_NOTIFY($hWnd, $Msg, $wParam, $lParam)
    Local $tNMHDR, $hWndFrom, $iCode
    $tNMHDR = DllStructCreate($tagNMHDR, $lParam)
    $hWndFrom = DllStructGetData($tNMHDR, "hWndFrom")
    $iCode = DllStructGetData($tNMHDR, "Code")
    $g_hListView = GUICtrlGetHandle($oListView)
    Switch $hWndFrom
        Case $g_hListView
            Switch $iCode
                Case $NM_CUSTOMDRAW
                    Local $tCustDraw = DllStructCreate($tagNMLVCUSTOMDRAW, $lParam)
                    Local $iDrawStage = DllStructGetData($tCustDraw, "dwDrawStage")
                    If $iDrawStage = $CDDS_PREPAINT Then Return $CDRF_NOTIFYITEMDRAW
                    If $iDrawStage = $CDDS_ITEMPREPAINT Then Return $CDRF_NOTIFYSUBITEMDRAW
                    Local $iSubItem = DllStructGetData($tCustDraw, "iSubItem")
                    Local $iItem = DllStructGetData($tCustDraw, "dwItemSpec")
                    Local $iColor = $CLR_BLACK

                    If $iSubItem = 2 Then
                        $iColor = ("0x" & _GUICtrlListView_GetItemText($g_hListView, $iItem, 1))
                    Else
                        $iColor = $CLR_BLACK
                    EndIf

                    DllStructSetData($tCustDraw, "clrText", $iColor)
                    Return $CDRF_NEWFONT

            EndSwitch
    EndSwitch
    Return $GUI_RUNDEFMSG
EndFunc   ;==>WM_NOTIFY

Saludos

AndyS19 · August 19, 2017

Perfect! I was struggling with 'BugFix's rather extensive UDF code, but this addresses my issue exactly.

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Cannot set just 1 listview column's color

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