Add a string
#include <GuiComboBoxEx.au3>
_GUICtrlComboBoxEx_AddString ( $hWnd, $sText [, $iImage = -1 [, $iSelectedImage = -1 [, $iOverlayImage = -1 [, $iIndent = -1 [, $iParam = -1]]]]] )
| $hWnd | Handle to the control | 
| $sText | Item text. If set to -1, the item set is set via the $CBEN_GETDISPINFO notification message. | 
| $iImage | [optional] 0-based index of the item's icon in the control's image list | 
| $iSelectedImage | [optional] 0-based index of the item's icon in the control's image list | 
| $iOverlayImage | [optional] 0-based index of the item's icon in the control's image list | 
| $iIndent | [optional] Number of image widths to indent the item. A single indentation equals the width of an image. | 
| $iParam | [optional] Value specific to the item | 
| Success: | the index of the new item. | 
| Failure: | -1. | 
_GUICtrlComboBoxEx_DeleteString, _GUICtrlComboBoxEx_InitStorage
#include <GuiComboBoxEx.au3>
#include <GUIConstantsEx.au3>
#include <GuiImageList.au3>
Example()
Func Example()
    Local $hGUI, $hImage, $hCombo
    ; Create GUI
    $hGUI = GUICreate("ComboBoxEx Add String", 400, 300)
    $hCombo = _GUICtrlComboBoxEx_Create($hGUI, "", 2, 2, 394, 100)
    GUISetState(@SW_SHOW)
    $hImage = _GUIImageList_Create(16, 16, 5, 3)
    For $x = 0 To 146
        _GUIImageList_AddIcon($hImage, @SystemDir & "\shell32.dll", $x)
    Next
    _GUIImageList_Add($hImage, _GUICtrlComboBoxEx_CreateSolidBitMap($hCombo, 0xFF0000, 16, 16))
    _GUIImageList_Add($hImage, _GUICtrlComboBoxEx_CreateSolidBitMap($hCombo, 0x00FF00, 16, 16))
    _GUIImageList_Add($hImage, _GUICtrlComboBoxEx_CreateSolidBitMap($hCombo, 0x0000FF, 16, 16))
    _GUICtrlComboBoxEx_SetImageList($hCombo, $hImage)
    _GUICtrlComboBoxEx_InitStorage($hCombo, 150, 300)
    _GUICtrlComboBoxEx_BeginUpdate($hCombo)
    For $x = 0 To 149
        _GUICtrlComboBoxEx_AddString($hCombo, StringFormat("%03d : Random string", Random(1, 200, 1)), $x, $x)
    Next
    _GUICtrlComboBoxEx_EndUpdate($hCombo)
    Do
    Until GUIGetMsg() = $GUI_EVENT_CLOSE
EndFunc   ;==>Example