Re: Can initialization of static class members be forced before main?

From:
hurcan solter <hsolter@gmail.com>
Newsgroups:
comp.lang.c++
Date:
Fri, 4 Apr 2008 01:32:07 -0700 (PDT)
Message-ID:
<37f607fb-e152-4f0d-8f74-7d3ed105dc23@f63g2000hsf.googlegroups.com>
In windows, if the Global list and the self registering classes are in
different
libraries (and if they are DLLs as James stated) the code something
like;

AggregateEntity.cpp
-----------------------
int AggregateEntityobjinit=0;
namespace
{
    DTSBaseEntity* createAggregateEntity(){
    return new AggregateEntity;
    }
const bool registered =
ObjFactory::Instance().Register("AggregateEntity",createAggregateEntity);
}

  will fail to work since every DLL has its own copy of ObjFactory.So
you have to
pass the singleton from DLL to the main module

DLLEXPORT ObjFactory * initFactory()
{
  AggregateEntityobjinit = 0 //This will force the registration. (I
think it's
                             //connected to the last sentence in
3.6.2./1
  return ObjFactory::Instance();
}

 This way you can get all classes registered .Note that this is only
required if registration takes place in a DLL you won;t need it if it
happens to be in a static library or executable itself

Hope it helps
Hurcan Solter

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