Successful initialization verification

Under some circumstances, the library might be loaded into memory but not properly initialized. For example, if the environment variable CLIENT_LOCALE is set to an invalid locale, the GLS library does not properly initialize, and thus the library also does not properly initialize.

To allow application programs to verify that initialization succeeded, several new members have been added to the ITFactoryList class (defined in the public header file $INFORMIXDIR/incl/c++/itcppop.h): 
class IT_EXPORTCLASS ITFactoryList
    {
        ...

    public:

     // These are the built-in factory list initialization state values
      enum InitState { NOTINIT, INITING, INITED };
    // This function can be used to determine if the built-in factory
    // list initialized properly. It returns
    ITFactoryList::NOTINIT
    // if initialization failed.
    static InitState GetInitState();

     ...

    };
The user application calls GetInitState() before using any classes or interfaces to determine if initialized properly, as follows: 
 main(int, char *)
       {
          // check that Object Interface for C++ DLL initialized ok
          if (ITFactoryList::GetInitState() == ITFactoryList::NOTINIT)
          {
             cout << "Error: Object Interface for C++ DLL not
             initialized" <<
                             endl;
             cout << "Error: exiting program" << endl;
             return -1;
          }
       ...