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jezzzzy

ObjEvent Help

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jezzzzy

Ok. I have a custom DLL that has many methods that return events. I have studied up on ObjEvent but nearly everything has to do with IE.au3. The documentation that came with this DLL identifies lots of events that have a visual basic syntax like this:

Public Event SiriusEventAntennaStatus As Sirius.AntennaStatusParamsEvent

or

Public Event SiriusEventChannelData As Sirius.ChannelDataParamsEvent

or

Public Event SiriusEventCommError As Sirius.StringParamsEvent

The Class Library also identifies "Delegates". They are the following:

Sirius.AntennaStatusParamsEvent

Sirius.ChannelDataParamsEvent

Sirius.ChannelParamsEvent

Sirius.NoParamsEvent

Sirius.SignalParamsEvent

Sirius.SongInfoDataParamsEvent

Sirius.StringParamsEvent

Sirius.VBChannelDataParamsEvent

Sirius.VBSongInfoDataParamsEvent

Here is the test code i have started:

$oSirius = ObjCreate("SiriusComm.Sirius")

$oEvent = ObjEvent($oSirius,"NoParamsEvent")

WITH $oSirius 
    .PowerOn
    .ComPort = 6
    .Open
ENDWITH 

;--Wait for open connection
While $oSirius.isopen = 0 
sleep(1000)
ConsoleWrite("Waiting...")
;stuff
Wend
ConsoleWrite("Done" & @CRLF)

;--Try to receive an event notification
$var = $oSirius.GetSignalStrength
MsgBox(0,"var",$var)


While 1
    Sleep(500)
    ConsoleWrite("Testing Event Retrieval...Waiting for event" & @CRLF)
WEnd


;~ $oSirius.Close


Func NoParamsEvent($Eventname)
    MsgBox(0,"EVENT: " & $Eventname) 
EndFunc

Func SiriusEventRadioReady($text)
    MsgBox(0,"RADIO_READY: " & $Text)
EndFunc

Func SiriusEventPortOpened($Text)
; In the complete script (see link below) we show the contents in a GUI Edit box.
    MsgBox(0,"PORT_OPEN: " & $Text) 
EndFunc 

Func SIRIUS_EVENT_RADIO_NOT_FOUND($Text)
; In the complete script (see link below) we show the contents in a GUI Edit box.
    MsgBox(0,"RADIO_NOT_FOUND: " & $Text) 
EndFunc 

Func SIRIUS_EVENT_COMM_ERROR($Text)
; In the complete script (see link below) we show the contents in a GUI Edit box.
    MsgBox(0,"COMM_ERROR: " & $Text) 
EndFunc

I guess in short, I'm not sure what is supposed to go in this line:

$oEvent = ObjEvent($oSirius,"NoParamsEvent")

I have tried many combinations of the various event names listed in the Class Library to no success. The help file seemed to say that I could set up a universal catch for events like this:

Func NoParamsEvent($Eventname)
    MsgBox(0,"EVENT: " & $Eventname) 
EndFunc

But it doesn't work.

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Authenticity

The second parameter of ObjEvent() function is the prefix literal that the event should be posted to:

ObjEvent($oSirius,"NoParamsEvent_")
; ...


Func NoParamsEvent_NoParamsEvent($Eventname)
    MsgBox(0,"EVENT: " & $Eventname)
EndFunc

Func NoParamsEvent_SiriusEventRadioReady($text)
    MsgBox(0,"RADIO_READY: " & $Text)
EndFunc

Func NoParamsEvent_SiriusEventPortOpened($Text)
; In the complete script (see link below) we show the contents in a GUI Edit box.
    MsgBox(0,"PORT_OPEN: " & $Text)
EndFunc

Func NoParamsEvent_SIRIUS_EVENT_RADIO_NOT_FOUND($Text)
; In the complete script (see link below) we show the contents in a GUI Edit box.
    MsgBox(0,"RADIO_NOT_FOUND: " & $Text)
EndFunc

Func NoParamsEvent_SIRIUS_EVENT_COMM_ERROR($Text)
; In the complete script (see link below) we show the contents in a GUI Edit box.
    MsgBox(0,"COMM_ERROR: " & $Text)
EndFunc

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jezzzzy

Where does that prefix come from? Is it something that I choose, or does it correspond to one of the delegates or something in the event syntax?:

Public Event SiriusEventSignalStrength As Sirius.SignalParamsEvent

The AutoIT help file says "The prefix is appended by the Objects method name." I'm not sure what that means. The method in my SignalStrength example is "GetSignalStrength". The visual basic event syntax is: "Public Event SiriusEventSignalStrength As Sirius.SignalParamsEvent". So it seems like the 'As Sirius.SignalParamsEvent' is a type that the event is being cast as. So I'm guessing that the part I need to use is the 'SiriusEventSignalStrength' part. Just don't know what do do with it.

edit: typo

Edited by jezzzzy

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Authenticity

You don't need to care about what the event or function implements as long as it's possible to invoke your defined handler using the prefix you've supplied. The AutoIt help file is quite clear: the prefix (NoParamsEvent_ as in the example) is appended by the object method (event) so:

Public Event SiriusEventSignalStrength As Sirius.SignalParamsEvent

can be defined in AutoIt as:

; Example 1
ObjEvent($Obj, 'MyPrefix')
; ...
Func MyPrefixSiriusEventSignalStrength() ; 'SiriusEventSignalStrength' concatenated to the literal 'MyPrefix'
  ; Do stuff
EndFunc

; Example 2
ObjEvent($Obj, 'SiriusEvent_')
; ...
Func SiriusEvent_SiriusEventSignalStrength()
   ; Stuff

EndFunc

Don't know what are the variables the handler should be invoked with.

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jezzzzy

So ObjEvent() catches all events no matter their originating method? And then I just have to have function names that start with the prefix defined in ObjEvent()?

If Yes to both of those questions, then how does ObjEvent know which of my functions go with which event? Based on your example, I think I need to use the bolded portion of this:

Public Event SiriusEventSignalStrength As Sirius.SignalParamsEvent

with my prefix concatenated on the front. Sorry if it seems like i'm being elementary about this - I'm just trying to get a solid grasp the fundamentals.

edit: bold

Edited by jezzzzy

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