blackberry 10 - Add elements to Drop down bb 10 cascades -

i have drop down in qml file like...

 dropdown {                  enabled: true                 // text                 option {                     text: "eur/usd"                  }              } 

and database base read function like... qlist databaseoperations::readrecords(qstring tablename){

qlist<qstring> sym_id_list;   // 1. local db connection. note, called database()   //    automatically open connection database      qsqldatabase database = qsqldatabase::database(); // opens default database.    // 2. create query search records      qsqlquery query(database);      const qstring sqlquery = "select * "+tablename;       if (query.exec(sqlquery)) {           // field indexes. know order of fields, , skip step.          // still work if fi changeldse order in query string.          const int customeridfield = query.record().indexof("symbolid");           // 3. start navigating through records calling 'next' function.         //     when there no longer records return false.          int recordsread = 0;          while (query.next()) {              // 4. access data (stored in query) via field indexes              //    , add data model.                  sym_id_list.insert(recordsread,query.value(1).tostring());                recordsread++;          }          qdebug() << "read " << recordsread << " records succeeded";          if (recordsread == 0) {             // alert(tr("the customer table empty."));          }      } else {         // alert(tr("read records failed: %1").arg(query.lasterror().text()));      }       // 6. optionally close database connection if no longer plan use      database.close();      return sym_id_list; 

}

once...this method ie executed, returns symbol id's in "qlist". question how add these "qlist" elements dynamiccaly drop down?

how achive it,

thanks,

well, first thing need expose qml dropdown c++. done object name property ala:

dropdown {     objectname: "mydropdown"     option {         text: "eur/usd"     } } 

next, find child c++:

qmldocument *qml =  qmldocument::create("asset:///my.qml"); container *root = qml->createrootobject<bb::cascades::container>(); //or whatever root control dropdown *dropdown = root->findchild<dropdown*>("mydropdown"); 

finally, add options qlist:

foreach (qstring string, list) {     dropdown->add(option::create().text(list)); }