from main gui starting classes with request

Qt Code: 
  1. for(int i=0; i< list.count(); i++)
  2.         {
  3.             ((Class1*)list.at(i))->startProcess();
  4.         }
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staring get requests

Qt Code: 
  1. for (int i=0; i< this->list.count(); i++)
  2.     {
  3.         if(!abort)
  4.         {
  5.             MyNetworkAccessManager *manager = new MyNetworkAccessManager(this);
  6.             manager->i = i;
  7.             manager->moveToThread(this->thread());
  8.             manager->setParent(this);
  9.  
  10.             QString url = list.at(i)->url;
  11.  
  12.             //qDebug()<< "get " + url;
  13.  
  14.             QNetworkReply* reply = manager->get(QNetworkRequest(QUrl(url)));
  15.             connect(manager, SIGNAL(finished(QNetworkReply*)),this, SLOT(replyFinished_listDesc(QNetworkReply*)));
  16.             connect(reply, SIGNAL(downloadProgress(qint64,qint64)), this, SLOT(downloadProgress_listDesc(qint64,qint64)));
  17.             connect(reply, SIGNAL(finished()), this, SLOT(finished_listDesc()));
  18.             connect(reply, SIGNAL(readyRead()), this, SLOT(readyRead_listDesc()));
  19.             this->listReplies.append(reply);
  20.         }
  21. }
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trying to delete obejcts

Qt Code: 
  1. void Class1::stop()
  2. {
  3.     abort = true;
  4.  
  5.     for(int i=0; i < listReplies.count(); i++)
  6.     {
  7.         QNetworkReply *reply = (QNetworkReply *)listReplies.at(i);
  8.         reply->disconnect();
  9.         reply->manager()->disconnect();
  10.         reply->abort();
  11.         reply->deleteLater();
  12.         reply->manager()->deleteLater();
  13.     }
  14. }
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somewhere about response

Qt Code: 
  1. void Class1::replyFinished_listDesc(QNetworkReply* reply)
  2. {
  3.     if(abort)
  4.     {
  5.         return;
  6.     }
  7.  
  8. .......
  9.  
  10. }
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deleting pointers of classes, crashes on delete t; string

Qt Code: 
  1. for(int i=0; i< list.count(); i++)
  2.     {
  3.         Class1* t = (Class1*)list.at(i);
  4.         t->stop();
  5.         delete t;
  6.     }
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where is problem? which right way to delete QNetworkReply's and QNetworkAccessManagers?