Dll Link To Hotcomm Chat Room(s)

[pvtrader]

Hi everybody,

I am trying to write an *.efs script that posts realtime trades to hotcomm chat room. Everytime I run the script, eSignal crashes.

Example of hotcomm HCUTIL.DLL INTERFACE:
-------------------------------------------------------------------------------
HCU_Connect
Description Connect into session to start sending messages and receiving transcripts
Parameters: int Snum – (IN) session number to connect
Returns: BOOL – whether the session has been connected

HCU_Disconnect
Description: Disconnect from session and stop receiving transcripts
Parameters: None
Returns: BOOL - whether the session has been connected

HCU_SendMessage
Description: Send a message to the connected session and send to all users in the session
as the current user
Parameters: char* Text – (IN) pointer to the message to be sent
Returns: BOOL – whether the message was sent

HCU_RecvMessage
Description: Receive any transcripts since the last retrieval or since connected
Parameters: char* Text – (OUT) pointer to store the transcript
int len – (IN) maximum length of transcript to store
Returns: int – number of bytes stored
---------------------------------------------------------------------------

EFS CODE AS FOLLOWS:

// OPTIONAL DLL LINK TO HOTCOMM
var hotcomm = new DLL("C:/Program Files/1stWORKS/hotCommLite/BIN/HCUtil");


function preMain() {


//AddFunction("refname", ReturnType, FunctionDefType, FunctionName, [Parameters…]);
hotcomm.addFunction("Connect",DLL.INT,DLL.STDCALL, "HCU_Connect", DLL.INT);
hotcomm.addFunction("Disconnect",DLL.INT,DLL.STDCA LL,"HCU_Connect");
hotcomm.addFunction("SendMessage",DLL.INT,DLL.STDC ALL,"HCU_SendMessage", DLL.STRING);


var room_number = 1;
var hotcomm_ret1;

hotcomm_ret1 = hotcomm.call("Connect",room_number);
hotcomm_ret1 = hotcomm.call("SendMessage","THIS IS A TEST!");
hotcomm_ret1 = hotcomm.call("Disconnect");

-------------------------------------------------------------------------------

Yet everytime I run this, crash,


any suggestions ?????


(thx in advance )

[Doji3333]

I'll give it a try...

1. Why does your DLL statement line point to a NON-DLL file?? You sould include a ".dll" at the enf of the filename.

1a. you might also place that dll into the c:\windows\system directory (in the PATH).

if this does not work...

2. verirfy the dll function definitiona are correct. Contact hotbox and verify the parameters of each function.

That is about it. Your code is pretty clean right now.. so it should work.

B

[pvtrader]

RE: DLL LINK TO HOTCOMM CHAT ROOMS

Hi Doji333,

yes, thx for the prompt reply


a) I believe the path & file name is acceptable because efs syntax checker will complain not finding file if in error.

b) which leaves me to verifying parameters passed and type of calling ( c/std etc) . I am in the process of checking with hotcomm.

Thanks again !

pvtrader

(p.s. excuse my typing error for the I , efs function name for disconnect used is disconnect oops )

[pvtrader]

RE: hotcomm dll link

By the way,

is there any possibility efs javascript is doing any name mangling on function names passed ?

If so, any way to check what it may be ?

pvtrader

[pvtrader]

Hi Everyone,

Attached is a hotcomm efs that simply posts text to a hotcomm chat room automatically via their dll. The script works with hotcomm standard not lite version.

Running the syntax check under eSignal pushes text to the hotcomm chat session room asssigned "1" and any error messages posted via formula output window.

The script works for a period of time via repetively hitting eSignals' efs syntax checker but eventually causes eSignal to crash.

I have tried to get feedback from eSignal but they say they do not support efs.

Is there anyone here who uses hotcomm & eSignal and sees the potential of such a utility ?

Montoring charts, trading realtime and posting in chatroom(s) can be cumbersome, especially using the same keyboard. It would be nice to have the capability when a market related event occurs to have an eSignal efs post the information ( e.g. real time entry/exits on trades ) to a hotcomm chat room automatically.

If anyone has any experience with eSignal efs using dll interface and debugging a crash, any help would be appreciatedly greatly!

( thanks in advance)

pvtrader

[FibbGann]

I totally agree with the overwhelming part, to bad I am not using hotcomm. A developement of this type would be nice from somewhere.

[eSignal_JasonK]

Hello pvtrader,

When the crash occurs, does your eSignal version generate a crash report? If so, be sure to submit it and include as much info as possible in the notes for the development team. Hopefully the report will help development narrow down the cause of the crash.

I have one idea you could try. Instead of placing the hotcomm code in preMain(), move it to a separate defined function and create a text button to call it. Then apply it to a chart and click the button in the lower left corner of the chart to test the dll. See if that makes any difference.

// OPTIONAL DLL LINK TO HOTCOMM
var hotcomm = new DLL("C:/Program Files/1stWORKS/hotComm/BIN/HCUtil.dll"); 


// assume dll resides in /windows/system32 folder 
//var hotcomm = new DLL("HCUtil.dll");            
   

function preMain() {

}

function testHotcomm() {
    //AddFunction("refname", ReturnType, FunctionDefType, FunctionName, [Parameters…]);
    hotcomm.addFunction("Connect",DLL.SHORT,DLL.STDCALL ,"HCU_Connect", DLL.INT); 
    hotcomm.addFunction("SendMessage",DLL.SHORT,DLL.STDCALL ,"HCU_SendMessage", DLL.STRING);
    hotcomm.addFunction("Disconnect",DLL.SHORT,DLL.STDCALL ,"HCU_Disconnect");

    var room_number = 1;
    var hotcomm_ret1;
    var test_string = "HELLO, this is a test\n\n";

    debugPrintln(" ");
        
    hotcomm_ret1 = hotcomm.call("Connect",room_number); 
    debugPrintln("Connect return code for connecting to room number " + room_number + " = " + hotcomm_ret1);
      
    
    hotcomm_ret1 = hotcomm.call("SendMessage",test_string);
    debugPrintln("Send Message return code for text msg sent " + test_string + " = " + hotcomm_ret1);
      
    hotcomm_ret1 = hotcomm.call("Disconnect"); 
    debugPrintln("Disconnect return code = " + hotcomm_ret1);    
    
    debugPrintln(" ");
}

function main() {
    if (getBarState() == BARSTATE_ALLBARS) { 
        drawTextPixel(5, 15, "Test@URL=EFS:testHotcomm", null, null, 
            Text.BUTTON, null, 12, "test");
    } 
    
    return;
} 

[quanttrader]

Link to chat

Have there been any developments(by Esignal or 3rd party) on linking alerts to chat rooms via dll or other EFS functions? I see an alert.playSound, alert.email, alert.addToList, but nothing on sending to chat? It's unclear if the original poster reached a resolution or not.

[eostrom]

There isn't currently a way to have an EFS file post an alert to a chat window by itself. There is expanded EFS functionality coming in later versions of eSignal 11 I can request that a feature like this be added, but that's all we can do at this time.