[Scip] New Solution Callback

[Jakob Breier]

Hi,

I am a student from the RWTH Aachen and I am working on a project using 
scip. I am working with the C++ Interface and I want to write out the 
currently best solutions every time a new solution is found, because the 
process crashes quite often (out of memory, system reboot, etc.). I 
believe the SOLFOUND event is the proper event to use (?). Unfortunately 
the following code does not work:
=============SolFoundEventHandler.h=============
#include "scip/scip.h"
#include "objscip/objeventhdlr.h"


class SolFoundEventHandler : public scip::ObjEventhdlr
{

         private:

         public:
                 SolFoundEventHandler();
                 virtual SCIP_RETCODE scip_exec(
                                      SCIP*              scip,
                                      SCIP_EVENTHDLR*    eventhdlr,
                                      SCIP_EVENT*        event,
                                      SCIP_EVENTDATA*    eventdata
                                      ) ;


};

============SolFoundEventHandler.cpp============
#include "SolFoundEventHandler.h"


SolFoundEventHandler::SolFoundEventHandler() : 
ObjEventhdlr("SOLFOUND","desc")
// As far as I understand the interface the above line should tell
// scip that I want to catch the SOLFOUND event.
{

}


SCIP_RETCODE SolFoundEventHandler::scip_exec(
         SCIP*              scip,
         SCIP_EVENTHDLR*    eventhdlr,
         SCIP_EVENT*        event,
         SCIP_EVENTDATA*    eventdata
         )
{

         SCIPerrorMessage("This message will never be printed.");
         SCIPABORT();

         return SCIP_OKAY;


}

Also "SCIP_CALL_ABORT(SCIPincludeObjEventhdlr(scip_, 
&solFoundEventHandler, false));" is called before the solving begins 
(solFoundEventHandler is of course an object of type 
SolFoundEventHandler). Yet SCIP_RETCODE SolFoundEventHandler::scip_exec 
is never called.
Do you know what I do wrong?

Regards,
Jakob Breier