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Setting ListView background color doesn't work properly

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I'm trying to set the background color for the listview and the window. I just can't figure this one out though, no matter how much I look at it.

I cut the code down to the bare minimum. Still not working as intended.

You are supposed to select the color in the menu. Then the function _SwitchBackgroundColor is called with the string for the color.

Works fine for the window background. But the ListView background is messed up.

First, the window is grey and the text background is white. Text background should be white, since the function is called before the main loop.

Whenever I click the corresponding menu, first the window changes color, than on the second click the text background changes color. Why this requires two clicks is beyond me.

Does anyone have any idea why that is?

;##### stuff we need for this script
#include <File.au3>
#include <Array.au3>
#include <MsgBoxConstants.au3>
#include <GUIConstantsEx.au3>
#include <GuiListView.au3>
#include <Misc.au3>

;##### stuff needed for the gui
#include <ButtonConstants.au3>
#include <EditConstants.au3>
#include <GUIListBox.au3>
#include <WindowsConstants.au3>
#include <GUIConstantsEx.au3>
#include <GuiListView.au3>
#include <GuiImageList.au3>
#include <ColorConstants.au3>

#Region ### START global variables
;####### global variables
Global $sVersion = "0.06"
Global $sBackgroundColor = "default" ; background color of the window
#EndRegion ### START global variables

#Region ### START Koda GUI section ### Form=q:\programme\autoit\src\gui_main.kxf
$hGuiWindow = GUICreate("asdf", 1000, 700)

$hComboBox = GUICtrlCreateCombo("nichts", 700, 8, 300 - 8)

$hGuiMenuHelp = GUICtrlCreateMenu("Hilfe?")
$hGuiMenuHelpHelp = GUICtrlCreateMenuItem("Hilfe", $hGuiMenuHelp)

$hGuiMenuColor = GUICtrlCreateMenu("Hintergrundfarbe")
$hGuiMenuColorDefault = GUICtrlCreateMenuItem("Standard", $hGuiMenuColor)
$hGuiMenuColorBlue = GUICtrlCreateMenuItem("Blau", $hGuiMenuColor)

$hGuiInput = GUICtrlCreateEdit("", 8, 8, 1000 - 16 - 300, 21, BitOR($ES_AUTOVSCROLL, $ES_AUTOHSCROLL, $ES_WANTRETURN))

Global $hGuiListview = _GUICtrlListView_Create($hGuiWindow, "asdf|qwer|zxcv", 8, 37, 1000 - 16, 700 - 45 - 21)
_GUICtrlListView_AddItem($hGuiListview, "lalala", 0)
_GUICtrlListView_AddSubItem($hGuiListview, 0, "blablabla", 0)
_GUICtrlListView_AddSubItem($hGuiListview, 0, "woiejf", 0)
_GUICtrlListView_AddItem($hGuiListview, "ythyj", 0)
_GUICtrlListView_AddSubItem($hGuiListview, 1, "seff", 0)
_GUICtrlListView_AddSubItem($hGuiListview, 1, "iaw", 0)
_GUICtrlListView_AddItem($hGuiListview, "vyzw", 0)
_GUICtrlListView_AddSubItem($hGuiListview, 2, "xenuvt", 0)
_GUICtrlListView_AddSubItem($hGuiListview, 2, "cscs", 0)

_GUICtrlListView_SetExtendedListViewStyle($hGuiListview, $LVS_EX_FULLROWSELECT)
#EndRegion ### END Koda GUI section ###

_SwitchBackgroundColor($sBackgroundColor, $hGuiWindow, $hGuiListview)

While 1
    $nMsg = GUIGetMsg()

    Switch $nMsg
        Case $GUI_EVENT_CLOSE
        Case $hGuiMenuHelpHelp
            MsgBox(0, '', '' & _
                    @CRLF & '' & _
                    @CRLF & "Version: " & $sVersion & _
                    @CRLF & '')
        Case $hGuiMenuColorBlue
            $sBackgroundColor = "blue"
            _SwitchBackgroundColor($sBackgroundColor, $hGuiWindow, $hGuiListview)
        Case $hGuiMenuColorDefault
            $sBackgroundColor = "default"
            _SwitchBackgroundColor($sBackgroundColor, $hGuiWindow, $hGuiListview)


Func _SwitchBackgroundColor($sColor, $hWindow, $hListview) ; switches the background color of the window
    Local $RGB ; the rgb color
    Local $BGR ; the bgr color

    If $sColor = "blue" Then
        $RGB = 0xA6CAF0
        $BGR = 0xF0CAA6
;~      $RGB = 0xA6CAF0
;~      $BGR = _ColorConvert($RGB)
    If $sColor = "default" Then
        $RGB = 0xF0F0F0
        $BGR = 0xF0F0F0
;~      $RGB = 0xF0F0F0
;~      $BGR = _ColorConvert($RGB)

    GUISetBkColor($RGB, $hWindow)
    _GUICtrlListView_SetBkColor($hListview, $BGR)
    _GUICtrlListView_SetTextColor($hListview, $CLR_BLACK)
    _GUICtrlListView_SetTextBkColor($hListview, $BGR)
EndFunc   ;==>_SwitchBackgroundColor

Func _ColorConvert($nColor);RGB to BGR or BGR to RGB
    ; source for this function:
    ; https://www.autoitscript.com/forum/topic/73302-where-can-i-get-a-version-that-supports-bgr-colormode/
    Return _
            BitOR(BitShift(BitAND($nColor, 0x000000FF), -16), _
            BitAND($nColor, 0x0000FF00), _
            BitShift(BitAND($nColor, 0x00FF0000), 16))
EndFunc   ;==>_ColorConvert


Edited by Kira16651
added tags

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No idea why this works, but this is exactly what i needed :D thanks

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