Finaly , after getting all methods of event obj , the getclass method is what I needed :

https://drive.google.com/open?id=1ak_IP3cXbnLVah3bo_Yf9BGyxgQqHRTX
event properties:
Reference
Resource
Resource
resourcelocaltoscene
resourcepath
resourcename
InputEvent
device
InputEventWithModifiers
alt
shift
control
meta
command
InputEventMouse
buttonmask
position
globalposition
InputEventMouseMotion
relative
speed
Script
script
event methods:
setrelative
getrelative
setspeed
getspeed
setbuttonmask
getbuttonmask
setposition
getposition
setglobalposition
getglobalposition
setalt
getalt
setshift
getshift
setcontrol
getcontrol
setmetakey
getmetakey
setcommand
getcommand
setdevice
getdevice
isaction
isactionpressed
isactionreleased
getactionstrength
ispressed
isecho
astext
shortcutmatch
isactiontype
xformedby
setuplocaltoscene
setpath
takeoverpath
getpath
setname
getname
getrid
setlocaltoscene
islocaltoscene
getlocalscene
setuplocaltoscene
duplicate
initref
reference
unreference
free
_notification
_set
_get
_getpropertylist
_init
get_class
isclass
set
get
setindexed
getindexed
getpropertylist
getmethodlist
notification
getinstanceid
setscript
getscript
setmeta
getmeta
hasmeta
getmetalist
addusersignal
hasusersignal
emitsignal
call
calldeferred
setdeferred
callv
hasmethod
getsignallist
getsignalconnectionlist
getincomingconnections
connect
disconnect
isconnected
setblocksignals
isblockingsignals
propertylistchangednotify
setmessagetranslation
cantranslatemessages
tr
isqueuedfor_deletion