Re: [Quickfix-developers] Simple beginner questions

[<ja...@sk...>]

I have followed your advice on including the header file and also 
followed the example on receiving messages in the documentation. 
However, I have the problem of conditionally required field missing 
(268).
I have googled the problem and a similar issue was found here. 
http://stackoverflow.com/questions/26937458/quickfix-error-58-conditionally-required-field-missing-268
Will it be possible to get only the field 270 from the reply message, or 
what should I need to do in order to just get the market value?

On 2015-06-12 04:32, or...@qu... wrote:
> 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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