#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 Get/Set Unicode Format (v" & @AutoItVersion & ")", 400, 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[10], $aidChildItem[30], $iYItem = 0
        For $x = 0 To 9
                $ahItem[$x] = _GUICtrlTreeView_Add($idTreeView, 0, StringFormat("[%02d] New Item", $x), 4, 5)
                _GUICtrlTreeView_SetStateImageIndex($idTreeView, $ahItem[$x], 1)
                For $y = 1 To 3
                        $aidChildItem[$iYItem] = _GUICtrlTreeView_AddChild($idTreeView, $ahItem[$x], StringFormat("[%02d] New Child", $y), 0, 3)
                        _GUICtrlTreeView_SetStateImageIndex($idTreeView, $aidChildItem[$iYItem], 1)
                        $iYItem += 1
                Next
        Next
        _GUICtrlTreeView_EndUpdate($idTreeView)

        MsgBox($MB_SYSTEMMODAL, "Information", "Unicode Format: " & _GUICtrlTreeView_GetUnicodeFormat($idTreeView))
        _GUICtrlTreeView_SetUnicodeFormat($idTreeView, False)
        MsgBox($MB_SYSTEMMODAL, "Information", "Unicode Format: " & _GUICtrlTreeView_GetUnicodeFormat($idTreeView))

        ; Loop until the user exits.
        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