Re: [Quickfix-developers] Simple beginner questions

[<or...@qu...>]

For your first example, I think you are probably just not including the
proper header file for that message.

#include <quickfix/fix42/MarketDataSnapshotFullRefresh.h>

The message cracker just uses forward declarations, you need to include
the header to actually use the object.

For your second example, field 270 is not a header field, nor can it be
accessed directly from the message since it is a repeating group.
Instead of dealing with this however, I would recommend just including
the proper header file and continue on with your first approach.


> -------- Original Message --------
> Subject: [Quickfix-developers] Simple beginner questions
> From: ja...@sk...
> Date: Thu, June 11, 2015 3:17 pm
> To: qui...@li...
> 
> 
> QuickFIX Documentation: http://www.quickfixengine.org/quickfix/doc/html/
> 
> Hi,
> 
> Currently I'm trying to obtain the market value of a symbol from a reply 
> message from a server, however, I'm not sure on how to obtain the value 
> in field 270(MDEntryPx).
> 
> void Application::onMessage
> (const FIX42::MarketDataSnapshotFullRefresh& message, const 
> FIX::SessionID&) {
> FIX::NoMDEntries noMDEntries;
> message.get(noMDEntries); // incomplete type is not allowed
> }
> 
> when I typed in the above code in my application.cpp, I could not 
> compile due to the error commented.
> 
> 
> void Application::fromApp(const FIX::Message& message, const 
> FIX::SessionID& sessionID)
> throw(FIX::FieldNotFound, FIX::IncorrectDataFormat, 
> FIX::IncorrectTagValue, FIX::UnsupportedMessageType)
> {
> crack(message, sessionID);
> std::cout << std::endl << "IN: " << message << std::endl;
> FIX::MsgType msgType;
> message.getHeader().getField(msgType);
> if (msgType.getValue() == "W"){
> std::string value = message.getHeader().getField(270); //MDEntryPx
> mkval = std::stod(value); //mkval is a double
> }
> }
> 
> when I used the above code, I could compile and run, but when it reached 
> the line         std::string value = message.getHeader().getField(270);
> I received an toApp message with 58=Conditionally Required Field Missing 
> <270>
> 
> May I know what I can change in order to be able to store the symbol 
> price into a double object?
> 
> 
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