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

Global $g_hImage, $g_hStateImage

Example()

Func Example()
    GUICreate("TreeView: Ermittelt die Ebene eines Items (v" & @AutoItVersion & ")", 500, 300)

    Local $iStyle = BitOR($TVS_EDITLABELS, $TVS_HASBUTTONS, $TVS_HASLINES, $TVS_LINESATROOT, $TVS_DISABLEDRAGDROP, $TVS_SHOWSELALWAYS)
    Local $idTreeView = GUICtrlCreateTreeView(2, 2, 396, 268, $iStyle, $WS_EX_CLIENTEDGE)
    GUISetState(@SW_SHOW)

    _CreateNormalImageList()
    _GUICtrlTreeView_SetNormalImageList($idTreeView, $g_hImage)

    _CreateStateImageList()
    _GUICtrlTreeView_SetStateImageList($idTreeView, $g_hStateImage)

    _GUICtrlTreeView_BeginUpdate($idTreeView)
    Local $ahItem[4], $aidChildItem[120], $iYItem = 0
    For $x = 0 To 3
        $ahItem[$x] = _GUICtrlTreeView_Add($idTreeView, 0, StringFormat("[%02d] Neues Item", $x), 4, 5)
        _GUICtrlTreeView_SetStateImageIndex($idTreeView, $ahItem[$x], 1)
        For $y = 0 To 4
            $aidChildItem[$iYItem] = _GUICtrlTreeView_AddChild($idTreeView, $ahItem[$x], StringFormat("[%02d] Neues Child", $iYItem), 0, 3)
            _GUICtrlTreeView_SetStateImageIndex($idTreeView, $aidChildItem[$iYItem], 1)
            For $z = 1 To 5
                $aidChildItem[$iYItem + $z] = _GUICtrlTreeView_AddChild($idTreeView, $aidChildItem[$iYItem], StringFormat("[%02d] Neues Child", $iYItem + $z), 0, 3)
            Next
            $iYItem += 6
        Next
    Next
    _GUICtrlTreeView_EndUpdate($idTreeView)

    Local $iRand = Random(0, 99, 1)
    MsgBox($MB_SYSTEMMODAL, "Information", StringFormat("Index %d Ebene: %d", $iRand, _GUICtrlTreeView_Level($idTreeView, $aidChildItem[$iRand])))
    _GUICtrlTreeView_SelectItem($idTreeView, $aidChildItem[$iRand])

    ; Die Schleife wiederholt sich, bis der Benutzer die Beenden-Aktion der GUI auslöst.
    Do
    Until GUIGetMsg() = $GUI_EVENT_CLOSE
    GUIDelete()
EndFunc   ;==>Example

Func _CreateNormalImageList()
    $g_hImage = _GUIImageList_Create(16, 16, 5, 3)
    _GUIImageList_AddIcon($g_hImage, "shell32.dll", 110)
    _GUIImageList_AddIcon($g_hImage, "shell32.dll", 131)
    _GUIImageList_AddIcon($g_hImage, "shell32.dll", 165)
    _GUIImageList_AddIcon($g_hImage, "shell32.dll", 168)
    _GUIImageList_AddIcon($g_hImage, "shell32.dll", 137)
    _GUIImageList_AddIcon($g_hImage, "shell32.dll", 146)
EndFunc   ;==>_CreateNormalImageList

Func _CreateStateImageList()
    $g_hStateImage = _GUIImageList_Create(16, 16, 5, 3)
    _GUIImageList_AddIcon($g_hStateImage, "shell32.dll", 3)
    _GUIImageList_AddIcon($g_hStateImage, "shell32.dll", 4)
EndFunc   ;==>_CreateStateImageList