#include <GuiComboBoxEx.au3>
#include <GUIConstantsEx.au3>
#include <GuiImageList.au3>
#include <MsgBoxConstants.au3>
#include <WindowsConstants.au3>

Example()

Func Example()
        Local $hGUI, $hImage, $hCombo

        ; Create GUI
        $hGUI = GUICreate("ComboBoxEx Reset Content", 400, 300)
        $hCombo = _GUICtrlComboBoxEx_Create($hGUI, "", 2, 2, 394, 100, BitOR($CBS_SIMPLE, $WS_VSCROLL, $WS_BORDER))
        GUISetState(@SW_SHOW)

        $hImage = _GUIImageList_Create(16, 16, 5, 3)
        _GUIImageList_AddIcon($hImage, @SystemDir & "\shell32.dll", 110)
        _GUIImageList_AddIcon($hImage, @SystemDir & "\shell32.dll", 131)
        _GUIImageList_AddIcon($hImage, @SystemDir & "\shell32.dll", 165)
        _GUIImageList_AddIcon($hImage, @SystemDir & "\shell32.dll", 168)
        _GUIImageList_AddIcon($hImage, @SystemDir & "\shell32.dll", 137)
        _GUIImageList_AddIcon($hImage, @SystemDir & "\shell32.dll", 146)
        _GUIImageList_Add($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, 100, 1)), Random(0, 8, 1), Random(0, 8, 1), Random(0, 8, 1))
        Next
        _GUICtrlComboBoxEx_EndUpdate($hCombo)

        ; Reset Content
        MsgBox($MB_SYSTEMMODAL, "Information", "Reset Content")
        _GUICtrlComboBoxEx_ResetContent($hCombo)

        Do
        Until GUIGetMsg() = $GUI_EVENT_CLOSE
EndFunc   ;==>Example