Adds a new subitem to the control
#include <GuiListView.au3>
_GUICtrlListView_AddSubItem ( $hWnd, $iIndex, $sText, $iSubItem [, $iImage = -1] )
| $hWnd | Control ID/Handle to the control | 
| $iIndex | 0-based index of the item | 
| $sText | Item or subitem text | 
| $iSubItem | 1-based index of the subitem | 
| $iImage | [optional] 0-based index of the icon in the control's image list | 
| Success: | True. | 
| Failure: | False. | 
#include <GUIConstantsEx.au3>
#include <GuiImageList.au3>
#include <GuiListView.au3>
Example()
Func Example()
    ; Create GUI
    GUICreate("ListView Add SubItem (v" & @AutoItVersion & ")", 400, 300)
    Local $idListview = GUICtrlCreateListView("", 2, 2, 394, 268, -1, BitOR($LVS_EX_FULLROWSELECT, $LVS_EX_SUBITEMIMAGES))
    GUISetState(@SW_SHOW)
    ; Set ANSI format
;~     _GUICtrlListView_SetUnicodeFormat($idListview, False)
    ; Load images
    Local $hImage = _GUIImageList_Create()
    _GUIImageList_Add($hImage, _GUICtrlListView_CreateSolidBitMap(GUICtrlGetHandle($idListview), 0xFF0000, 16, 16))
    _GUIImageList_Add($hImage, _GUICtrlListView_CreateSolidBitMap(GUICtrlGetHandle($idListview), 0x00FF00, 16, 16))
    _GUIImageList_Add($hImage, _GUICtrlListView_CreateSolidBitMap(GUICtrlGetHandle($idListview), 0x0000FF, 16, 16))
    _GUICtrlListView_SetImageList($idListview, $hImage, 1)
    ; Add columns
    _GUICtrlListView_InsertColumn($idListview, 0, "Column 1", 100)
    _GUICtrlListView_InsertColumn($idListview, 1, "Column 2", 100)
    _GUICtrlListView_InsertColumn($idListview, 2, "Column 3", 100)
    ; Add items
    _GUICtrlListView_AddItem($idListview, "Row 1: Col 1", 0)
    _GUICtrlListView_AddSubItem($idListview, 0, "Row 1: Col 2", 1, 1)
    _GUICtrlListView_AddSubItem($idListview, 0, "Row 1: Col 3", 2, 2)
    _GUICtrlListView_AddItem($idListview, "Row 2: Col 1", 1)
    _GUICtrlListView_AddSubItem($idListview, 1, "Row 2: Col 2", 1, 2)
    _GUICtrlListView_AddItem($idListview, "Row 3: Col 1", 2)
    ; Loop until the user exits.
    Do
    Until GUIGetMsg() = $GUI_EVENT_CLOSE
    GUIDelete()
EndFunc   ;==>Example