How using multi thread on this sample?

tmtt66

Hi
how using multi thread on this sample?
and two table on this sample fill asynchronous.

"sample":http://tmtt66.persiangig.com/sample-multithread.rar

thanks

sierdzio

Please post the relevant code here.

Jeroentjehome

Huh, your like is in persian language. That's a bit hard to read ;-) Also like slerdzio says, post the code you don't understand. Then we might be able to help.

tmtt66

mainwindow
@#include "mainwindow.h"
#include "ui_mainwindow.h"
#include "mythread.h"
#include <QtConcurrent/QtConcurrentRun>
#include <QMessageBox>
#include <qscrollbar.h>

MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
ui->tbltest1->setColumnCount(1);
ui->tbltest2->setColumnCount(1);
}

MainWindow::~MainWindow()
{
delete ui;
}

void MainWindow::on_btnstart_clicked()
{
ui->tbltest1->setRowCount(0);
ui->tbltest2->setRowCount(0);

threadtest1 = NULL;
threadtest2 = NULL;

threadtest1 = new mythread;
threadtest2 = new mythread;

connect(threadtest1, SIGNAL(updatetable1()), this, SLOT(runonthred1()));
connect(threadtest2, SIGNAL(updatetable2()), this, SLOT(runonthred2()));

threadtest1->name = "t1";
threadtest2->name = "t2";

threadtest1->start();
threadtest2->start();

}

void MainWindow::runonthred1()
{
QtConcurrent::run(this, &MainWindow::setdatatoview1);
}

void MainWindow::runonthred2()
{
QtConcurrent::run(this, &MainWindow::setdatatoview2);
}

void MainWindow::setdatatoview1()
{
for (int var = 0; var < 100; ++var)
{
ui->tbltest1->setRowCount(ui->tbltest1->rowCount() + 1);
ui->tbltest1->verticalScrollBar()->setSliderPosition(ui->tbltest1->verticalScrollBar()->maximum());

    threadtest1->msleep(100);
    QTableWidgetItem *data = NULL;
    data = new QTableWidgetItem(QString("test"));
    if(data)
    {
        ui->tbltest1->setItem(var, 0, data);
    }
    else
    {
        QMetaObject::invokeMethod(this, "UIStatus",  Qt::QueuedConnection, Q_ARG(bool, true));
        return;
    }
}

}

void MainWindow::setdatatoview2()
{
for (int var = 0; var < 100; ++var)
{
ui->tbltest2->setRowCount(ui->tbltest2->rowCount() + 1);
ui->tbltest2->verticalScrollBar()->setSliderPosition(ui->tbltest2->verticalScrollBar()->maximum());

    threadtest2->msleep(10);
    QTableWidgetItem *data = NULL;
    data = new QTableWidgetItem(QString("test"));
    if(data)
    {
        ui->tbltest2->setItem(var, 0, data);
    }
    else
    {
        QMetaObject::invokeMethod(this, "UIStatus",  Qt::QueuedConnection, Q_ARG(bool, true));
        return;
    }
}

}
@

thread
@#include "mythread.h"
#include <QDebug>
#include <QtCore>
#include "mainwindow.h"
#include <QTimer>

mythread::mythread(QObject *parent) :
QThread(parent)
{

}

void mythread::run()
{
if(this->name == "t1")
{
emit updatetable1();
}
if(this->name == "t2")
{
emit updatetable2();
}
}

@
@
#ifndef MYTHREAD_H
#define MYTHREAD_H

#include <QThread>
#include <QTimer>

class mythread : public QThread
{
Q_OBJECT
public:
explicit mythread(QObject parent = 0);
QString name;
QTimer timer ;

protected:
void run();

signals:
void updatetable1();
void updatetable2();

public slots:
};

#endif // MYTHREAD_H
@

thanks a lot.

dbzhang800

Hi, please note that

bq. QWidget and all its subclasses, are not reentrant. They can only be used from the main thread.

tmtt66

What is your recommend to solve problem?
Please help me .
thanks.