[pierrotm777]

You can use this exemple if you want use the copydata :

#Region ;**** Directives created by AutoIt3Wrapper_GUI ****
#AutoIt3Wrapper_outfile=receiver.exe
#AutoIt3Wrapper_Compression=4
#EndRegion ;**** Directives created by AutoIt3Wrapper_GUI ****
#include <WindowsConstants.au3>
#Include <misc.au3>

;*******************************How to use this script****************************************
;1- Run this script
;2- Create a .skin with two buttons
;3- For each button, use the RR command "SENDMSG;NameOfYourScript;CMD1"

;*****************************************connexion à RR**************************************
Global Const $StructDef_COPYDATA = "ptr;dword;ptr"
;Global Const $WM_COPYDATA = 0x4A
;Global Const $WM_CLOSE = 0x10
Global Const $STRUCTDEF_AU3MESSAGE = "char[255]"

_Singleton(@ScriptName)

Global $FrontEndName
If ProcessExists("RideRunner.exe") Then
	$FrontEndName = "RideRunner.exe"
ElseIf ProcessExists("iCarDS.exe") Then
	$FrontEndName = "iCarDS.exe"
EndIf


;create SDK for COM with RR.  This must be done ONLY once per script
$rr = "NIL"
$F = WinExists("RoadRunner")
If $F = 0 Then MsgBox(0, "Error", "Need a RideRunner" & @CRLF & _
			"process to run !!!", 5)
If $F = 1 Then
    $rr = ObjCreate("RideRunner.SDK")
EndIf

$rr.execute("SETTOPMOST;RR;false")

If @error Then
    MsgBox(4096, "Error", "An error it is produced")
EndIf

; Create Reciver window
$hwmd_Reciver = GUICreate("NameOfYourScript")

; Register Windows Messages
GUIRegisterMsg($WM_COPYDATA, "_GUIRegisterMsgProc")
GUIRegisterMsg($WM_CLOSE, "_GUIRegisterMsgProc")


Dim $cmd

While 1
	If $cmd = "CMD1" Then; you can change CMD1 by the command you want made
	  $cmd = ""
		;your code if CMD1 is send by DS or RR
		MsgBox(0,"Info","The button CMD1 is used !")
		$rr.execute("VIDEO")
	EndIf

	If $cmd = "CMD2" Then; you can change CMD2 by the command you want made
	  $cmd = ""
		;your code if CMD2 is send by DS or RR
		MsgBox(0,"Info","The button CMD2 is used !")
		$rr.execute("RADIO")
	EndIf

	If not ProcessExists($FrontEndName) Then
		Exit
	EndIf
	Sleep(250)
Wend

;**********************************************connexion à RR*************************************************
;*************************************************************************************************************

; Message Handler
Func _GUIRegisterMsgProc($hWnd, $MsgID, $WParam, $LParam)
	If $MsgID = $WM_COPYDATA Then
		; We Recived a WM_COPYDATA Message
		; $LParam = Poiter to a COPYDATA Struct
		$vs_cds = DllStructCreate($StructDef_COPYDATA, $LParam)
		; Member No. 3 of COPYDATA Struct (PVOID lpData;) = Pointer to Costum Struct
		$vs_msg = DllStructCreate($STRUCTDEF_AU3MESSAGE, DllStructGetData($vs_cds, 3))

		$SciTECmdLen = DllStructGetData($vs_cds, 2)
		$cmd = StringLeft(DllStructGetData($vs_msg, 1), $SciTECmdLen)

		; Display what we have recived
		; MsgBox(0, "Test String", $cmd)

	ElseIf $MsgID = $WM_CLOSE Then
	; We Recived a WM_CLOSE Message
		Exit
	EndIf
EndFunc ;==>_GUIRegisterMsgProc

;*******************************How to use this script****************************************
;1- Run this script
;2- Create a .skin with two buttons
;3- For each button, use the RR command "SENDMSG;NameOfYourScript;CMD1"