here is my code: #Include <WinAPI.au3> #include <Constants.au3> Global Const $RT_GROUP_ICON = 14 $Path = @WindowsDir&'\notepad.exe' $Hlib = _WinAPI_LoadLibraryEx($Path, $LOAD_LIBRARY_AS_DATAFILE) $Resource = DllCall('kernel32.dll', 'hwnd', 'FindResource', 'ptr', $Hlib, 'str', 1, 'str', $RT_GROUP_ICON) MsgBox(0, '', _WinAPI_GetLastErrorMessage()) what's wrong with it?