About Progress bar

[Thanh Nguyen]

I have a class that contains ProgressBar. On another interface when I pressed the button, it will perform the reading of data and pour on the board. I will call it class ProgressBarbar to display the time it made it finished I will close the progress bar behind you. I do not know why sometimes the progress bar was run forever made without closing it. It appears with a low rate. Expect people to explain me, maybe because I use the progress bar wrong.

code this:

void TopMenu::onbtLoadData_clicked()
{
 
         if(mDialog==NULL)
        {
            mDialog= new ThanhDialogTable(NULL);
            mDialog->exec();
            delete mDialog;
            mDialog = NULL;
        }
}

void TopMenu::onbtLoadData_clicked()
{
   
         if(mDialog==NULL)
        {
            mDialog= new ThanhDialogTable(NULL);
            mDialog->exec();
            delete mDialog;
            mDialog = NULL;
        }
}

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class ThanhDialogTable:

ThanhDialogTable::ThanhDialogTable(QWidget *parent):
    QDialog(parent),
    ui(new Ui::ThanhDialogTable)
{
    ui->setupUi(this);
     QFuture<void> *m_future = new QFuture<void>;
    m_SimpleProgress = new SimpleProgressBar();
    m_SimpleProgress->SetContent("Load Data......");
    *m_future = QtConcurrent::run(ThanhDialogTable::loadData, m_SimpleProgress);
    m_SimpleProgress->exec();
}

ThanhDialogTable::ThanhDialogTable(QWidget *parent):
    QDialog(parent),
    ui(new Ui::ThanhDialogTable)
{
    ui->setupUi(this);
     QFuture<void> *m_future = new QFuture<void>;
    m_SimpleProgress = new SimpleProgressBar();
    m_SimpleProgress->SetContent("Load Data......");
    *m_future = QtConcurrent::run(ThanhDialogTable::loadData, m_SimpleProgress);
    m_SimpleProgress->exec();
}

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and loadData of ThanhDialogTable

bool ThanhDialogTable::loadData(FiSK_SimpleProgressBar *pProgress)
{
    /* Here I call to read data to get one list data from the database and then
        I put that data into the table and display */
    QString select("No, Name1, Name2");
    QStringList labels = select.split(", ");
    ui->m_table->setColumnCount(labels.count());
    ui->m_table->setHorizontalHeaderLabels(labels);
    QList<int> columnWidths;
    columnWidths << 49 << 129 << 99;
    ui->m_table->setColumnWidth(ColumnType::No, columnWidths[ColumnType::No]);
    ui->m_table->setColumnWidth(ColumnType::Name1, columnWidths[ColumnType::Name1]);
    ui->m_table->setColumnWidth(ColumnType::Name2, columnWidths[ColumnType::Name2]);
    QTableWidgetItem *item_name1;
    QTableWidgetItem *item_name2 ;
    QTableWidgetItem *item_No;
    int count = m_ListData.size();
    ui->m_table->setRowCount(count);
 
   for (int i = 0; i < count; i++) 
       {
         item_name1 = new QTableWidgetItem ();
         item_name2 = new QTableWidgetItem ( );
         item_No = new QTableWidgetItem ( );
         item_No ->setText(QString::number(i+1));
         item_name1->setText(m_ListData.at(i).mName1);
         item_name2->setText(m_ListData.at(i).mName2);
         ui->m_table->setItem(i,0,item_No);
         ui->m_table->setItem(i,1,item_name1);
         ui->m_table->setItem(i,2,item_name2);
        }
 
//Close progress bar
      pProgress->hide();
      pProgress->close();
}

bool ThanhDialogTable::loadData(FiSK_SimpleProgressBar *pProgress)
{
    /* Here I call to read data to get one list data from the database and then
        I put that data into the table and display */
    QString select("No, Name1, Name2");
    QStringList labels = select.split(", ");
    ui->m_table->setColumnCount(labels.count());
    ui->m_table->setHorizontalHeaderLabels(labels);
    QList<int> columnWidths;
    columnWidths << 49 << 129 << 99;
    ui->m_table->setColumnWidth(ColumnType::No, columnWidths[ColumnType::No]);
    ui->m_table->setColumnWidth(ColumnType::Name1, columnWidths[ColumnType::Name1]);
    ui->m_table->setColumnWidth(ColumnType::Name2, columnWidths[ColumnType::Name2]);
    QTableWidgetItem *item_name1;
    QTableWidgetItem *item_name2 ;
    QTableWidgetItem *item_No;
    int count = m_ListData.size();
    ui->m_table->setRowCount(count);

   for (int i = 0; i < count; i++) 
       {
         item_name1 = new QTableWidgetItem ();
         item_name2 = new QTableWidgetItem ( );
         item_No = new QTableWidgetItem ( );
         item_No ->setText(QString::number(i+1));
         item_name1->setText(m_ListData.at(i).mName1);
         item_name2->setText(m_ListData.at(i).mName2);
         ui->m_table->setItem(i,0,item_No);
         ui->m_table->setItem(i,1,item_name1);
         ui->m_table->setItem(i,2,item_name2);
        }

//Close progress bar
      pProgress->hide();
      pProgress->close();
}

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Please help me and sympathetic English in the level.