QT 開啓新進程注意事項

connect(ui->pushButton,SIGNAL(clicked()),this,SLOT(slotStart()));//信號關聯
    connect(ui->pushButton_2,SIGNAL(clicked()),this,SLOT(slotStop()));

 for(int i=0;i<MAXSIZE;i++)
    {
        workThread[i]=new WorkThread();	//(1)
    }
     //workThread[0]->start();
    //thread = new WorkThread();
    connect(workThread[0], SIGNAL(returnResult(int)), this, SLOT(displayResult(int)), Qt::QueuedConnection);
    connect(workThread[1], SIGNAL(returnResult(int)), this, SLOT(displayResult(int)), Qt::QueuedConnection);
    //信號和槽 但有信號時 就會啓動槽 我只要一個connect 當程序結束的時候 讓sum變化
    //connect(area,SIGNAL(valueChanged(int)), this,SLOT(spinChange(int)));
    //connect(thread, SIGNAL(returnResult2(int)), this, SLOT(displayResult2(int)));

}



void MainWindow::slotStart()
{
//    for(int i=0;i<MAXSIZE;i++)
//    {
//        workThread[i]=new WorkThread();	//(a)
//    }
    for(int i=0;i<MAXSIZE;i++)
    {
        workThread[i]->start();			//(b)
    }
    ui->pushButton->setEnabled(false);
    ui->pushButton_2->setEnabled(true);
}

connect(ui->pushButton,SIGNAL(clicked()),this,SLOT(slotStart()));//信號關聯
    connect(ui->pushButton_2,SIGNAL(clicked()),this,SLOT(slotStop()));

將開始與暫停按鈕與開始暫停線程程序相連接

connect(workThread[0], SIGNAL(returnResult(int)), this, SLOT(displayResult(int)), Qt::QueuedConnection);
    connect(workThread[1], SIGNAL(returnResult(int)), this, SLOT(displayResult(int)), Qt::QueuedConnection);

這兩行是信號槽的連接 我希望通過按開始按鈕來運行run函數 

 emit returnResult(6);//run中含有該函數 可以用來實現通信 

connect(workThread[0], SIGNAL(returnResult(int)), this, SLOT(displayResult(int)), Qt::QueuedConnection);

我希望是能打印出6  但是由於

 //    for(int i=0;i<MAXSIZE;i++)
//    {
//        workThread[i]=new WorkThread();    //(a)
//    }  

這段函數將前面的

for(int i=0;i<MAXSIZE;i++)
    {
        workThread[i]=new WorkThread();    //(1)
    }

給覆蓋了 故無法實現通訊