Hi, Here is a proper code for the double click: #include <StructureConstants.au3> #include <WindowsConstants.au3> #include <GUIConstantsEx.au3>   Func WM_NOTIFY($hWnd, $iMsg, $iwParam, $ilParam)     #forceref $hWnd, $iMsg, $iwParam       Local $tNMHDR = 0, $iIDFrom = 0, $iCode = 0       $tNMHDR = DllStructCreate($tagNMHDR, $ilParam)       $iIDFrom = DllStructGetData($tNMHDR, "IDFrom")     $iCode = DllStructGetData($tNMHDR, "Code")       Switch $iCode         Case $NM_DBLCLK