#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: Löscht alles (v" & @AutoItVersion & ")", 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 $hItem, $iImage
    For $x = 0 To Random(2, 10, 1)
        $ahItem = _GUICtrlTreeView_Add($idTreeView, 0, StringFormat("[%02d] Neues Item", $x), $iImage, $iImage)
        For $y = 0 To Random(2, 10, 1)
            $iImage = Random(0, 5, 1)
            _GUICtrlTreeView_AddChild($idTreeView, $ahItem, StringFormat("[%02d] Neues Child", $y), $iImage, $iImage)
        Next
    Next
    _GUICtrlTreeView_EndUpdate($idTreeView)

    MsgBox($MB_SYSTEMMODAL, "Information", "Löscht alles")
    _GUICtrlTreeView_DeleteAll($idTreeView)

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