I built an application based on QuickFIX Engine in Qt, named fixapp; it works fine. My broker asked me to specify a local port to connect to them. Then I couldn't find such configuration file, so I modified the source code of QuickFix.
I used the examples of tradeclient and executor brought by QuickFIX source code to test. This works. tradeclient binds to a local port I specified in configuration file.
However, when I turn to fixapp, using the library built by the modified QuickFIX source code, it doesn't bind to the local port I specified. It seems that the part I modified didn't change the behavior of the program.
What are the potential problems here?
Update:
I tried to set some breakpoints in QuickFix source code. In one cpp file I modified, my breakpoint is ignored. It is Debug Mode, not release mode. I feel like that it is running the old cpp file and showing the new cpp file.