#include <GUIConstantsEx.au3>
#include <GuiImageList.au3>
#include <GuiTreeView.au3>
#include <MsgBoxConstants.au3>
#include <WindowsConstants.au3>

Example()

Func Example()
        Local $iStyle = BitOR($TVS_EDITLABELS, $TVS_HASBUTTONS, $TVS_HASLINES, $TVS_LINESATROOT, $TVS_DISABLEDRAGDROP, $TVS_SHOWSELALWAYS, $TVS_CHECKBOXES)

        GUICreate("TreeView Get/Set Insert Mark Colo (v" & @AutoItVersion & ")r", 400, 300)

        Local $idTreeView = GUICtrlCreateTreeView(2, 2, 396, 268, $iStyle, $WS_EX_CLIENTEDGE)
        GUISetState(@SW_SHOW)

        Local $hImage = _GUIImageList_Create(16, 16, 5, 3)
        _GUIImageList_AddIcon($hImage, "shell32.dll", 110)
        _GUIImageList_AddIcon($hImage, "shell32.dll", 131)
        _GUIImageList_AddIcon($hImage, "shell32.dll", 165)
        _GUIImageList_AddIcon($hImage, "shell32.dll", 168)
        _GUIImageList_AddIcon($hImage, "shell32.dll", 137)
        _GUIImageList_AddIcon($hImage, "shell32.dll", 146)
        _GUICtrlTreeView_SetNormalImageList($idTreeView, $hImage)

        _GUICtrlTreeView_BeginUpdate($idTreeView)
        Local $ahItem[6]
        For $x = 0 To _GUIImageList_GetImageCount($hImage) - 1
                $ahItem[$x] = _GUICtrlTreeView_Add($idTreeView, 0, StringFormat("[%02d] New Item", $x + 1), $x, $x)
        Next
        _GUICtrlTreeView_EndUpdate($idTreeView)

        MsgBox($MB_SYSTEMMODAL, "Information", "Insert Mark Color: 0x" & Hex(_GUICtrlTreeView_GetInsertMarkColor($idTreeView)))

        _GUICtrlTreeView_SetInsertMarkColor($idTreeView, $COLOR_DARKSEAGREEN)

        Local $iRand = Random(0, 5, 1)
        _GUICtrlTreeView_SetInsertMark($idTreeView, $ahItem[$iRand])

        MsgBox($MB_SYSTEMMODAL, "Information", "Insert Mark Color: 0x" & Hex(_GUICtrlTreeView_GetInsertMarkColor($idTreeView)))

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