why can't I create a line inside a tab item?
#include <File.au3>
#include <Array.au3>
#include <GUIconstants.au3>
#include <String.au3>
#include <FontConstants.au3>
#include <GUIConstantsEx.au3>
#include <GuiListView.au3>
#include <ListViewConstants.au3>
#include <StructureConstants.au3>
#include <WinAPI.au3>
#include <WindowsConstants.au3>
$GUI = GUICreate("Percent Allocation", 500, 400, 30, 30)
GUISetFont(11, 600)
$tab = GUICtrlCreateTab(50, 20, 400, 310 )
$TAB1 = GUICtrlCreateTabItem("sun")
$Line=GUICtrlCreateGraphic (90,90,100,15)
$Line1=GUICtrlSetGraphic (-1,$GUI_GR_LINE,70,90)
GUICtrlCreateLabel ("HOUR",80,70)
GUICtrlCreateLabel ("skill-881",170,70)
GUICtrlCreateLabel ("07:00-09:00",60,110)
GUICtrlCreateLabel ("09:00-11:00",60,140)
GUICtrlCreateLabel ("11:00-13:00",60,170)
GUICtrlCreateLabel ("13:00-15:00",60,200)
GUICtrlCreateLabel ("15:00-17:00",60,230)
GUICtrlCreateLabel ("17:00-19:00",60,260)
$TAB2 = GUICtrlCreateTabItem("mon")
$Line=GUICtrlCreateGraphic (90,90,100,15)
$Line1=GUICtrlSetGraphic (-1,$GUI_GR_LINE,70,90)
GUICtrlCreateLabel ("HOUR",80,70)
GUICtrlCreateLabel ("skill-881",170,70)
GUICtrlCreateLabel ("07:00-09:00",60,110)
GUICtrlCreateLabel ("09:00-11:00",60,140)
GUICtrlCreateLabel ("11:00-13:00",60,170)
GUICtrlCreateLabel ("13:00-15:00",60,200)
GUICtrlCreateLabel ("15:00-17:00",60,230)
GUICtrlCreateLabel ("17:00-19:00",60,260)
$TAB3 = GUICtrlCreateTabItem("tue")
$TAB4 = GUICtrlCreateTabItem("wed")
$TAB5 = GUICtrlCreateTabItem("thu")
$TAB6 = GUICtrlCreateTabItem("fri")
$TAB7 = GUICtrlCreateTabItem("sat")
GUICtrlCreateTabItem("")
GUISetOnEvent($GUI_EVENT_CLOSE, '_exit')
GUISetState()
While 1
$tabbing=GUICtrlRead ($tab)
;MsgBox (0,"this is tabbing",$tabbing)
sleep (4000)
WEnd
Func _exit()
Exit
EndFunc ;==>_exit