Drag&Drop on GUIlist don't work on Vista with UAC activated.

[Tlem 6]

Hello everybody, can someone help me to resolve my problem ?

I use Drag & Drop on certain scripts, and on Windows XP or Vista without UAC, the following script work fine.

But if the UAC is activated on Vista, the GUIlist never show the dragged files.

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#include <GuiConstants.au3>
#include <Array.au3>
#RequireAdmin

Global $WM_DROPFILES = 0x233
Global $gaDropFiles[1], $ListFile[1], $str = ""


#Region ################### GUI section ###################
$GUI_FusiOnV2 = GUICreate("GUI", 400, 335, -1, -1, -1, BitOR($WS_EX_ACCEPTFILES, $WS_EX_APPWINDOW))
$hlist = GUICtrlCreateList("", 8, 20, 385, 300)
GUICtrlSetState(-1, $GUI_DROPACCEPTED + $WS_HSCROLL)

GUISetState()
; For the Drag and Drop.
GUIRegisterMsg($WM_DROPFILES, "WM_DROPFILES_FUNC")

#EndRegion ################### GUI section ###################
While 1
    $nMsg = GUIGetMsg()
    Switch $nMsg
        Case $GUI_EVENT_CLOSE
            Exit
            
        Case $GUI_EVENT_DROPPED
            ReDim $ListFile[UBound($ListFile) + UBound($gaDropFiles) ]
            For $i = 0 To UBound($gaDropFiles) - 1
                _ArrayInsert($ListFile, $i, $gaDropFiles[$i])
            Next
            
            UpdateList()
            
    EndSwitch
WEnd
Exit

#Region ################### Fonctions ###################
; Fonction pour la gestion du Drag And Drop.
Func WM_DROPFILES_FUNC($hWnd, $msgID, $wParam, $lParam)
    Local $nSize, $pFileName
    Local $nAmt = DllCall("shell32.dll", "int", "DragQueryFile", "hwnd", $wParam, "int", 0xFFFFFFFF, "ptr", 0, "int", 255)
    For $i = 0 To $nAmt[0] - 1
        $nSize = DllCall("shell32.dll", "int", "DragQueryFile", "hwnd", $wParam, "int", $i, "ptr", 0, "int", 0)
        $nSize = $nSize[0] + 1
        $pFileName = DllStructCreate("char[" & $nSize & "]")
        DllCall("shell32.dll", "int", "DragQueryFile", "hwnd", $wParam, "int", $i, "ptr", DllStructGetPtr($pFileName), "int", $nSize)
        ReDim $gaDropFiles[$i + 1]
        $gaDropFiles[$i] = DllStructGetData($pFileName, 1)
        $pFileName = 0
    Next
EndFunc  ;==>WM_DROPFILES_FUNC

; Fonction de mise à jour de l'affichage des fichiers.
Func UpdateList()
    $str = "|"
    For $i = 0 To UBound($ListFile) - 1
        If $ListFile[$i] <> "" Then $str &= $ListFile[$i] & "|"
    Next
    GUICtrlSetData($hlist, $str)
EndFunc  ;==>UpdateList
#EndRegion ################### Fonctions ###################

[Tlem 6]

I don't know why, but if I don't use #RequireAdmin, the code work under Vista with UAC actived !!!

Can someone give an explication of that ?