@mzimmers
In this kind of scenarios, you should use timer to call a function periodically. NEVER EVER create a while-loop insider your GUI, this will freezes your app.
A suggested solution is
// dialog.cpp
#include "dialog.h"
#include "ui_dialog.h"
#include <QTimer>
#include <QDebug>
Dialog::Dialog(QWidget *parent) :
QDialog(parent),
ui(new Ui::Dialog),
runFlag(false)
{
ui->setupUi(this);
QTimer *timer = new QTimer(this);
connect(timer, SIGNAL(timeout()), this, SLOT(onWorkerThread()));
timer->start(1000); // delay
}
Dialog::~Dialog()
{
delete ui;
}
void Dialog::onWorkerThread()
{
if (runFlag){
qDebug() << "Worker Thread is running...";
}else{
qDebug() << "Worker Thread is NOT running...";
}
}
void Dialog::on_ActivateButton_clicked()
{
runFlag=true;
}
void Dialog::on_DisactivateButton_clicked()
{
runFlag=false;
}
//dialog.h
#ifndef DIALOG_H
#define DIALOG_H
#include <QDialog>
namespace Ui {
class Dialog;
}
class Dialog : public QDialog
{
Q_OBJECT
public:
explicit Dialog(QWidget *parent = 0);
~Dialog();
private slots:
void onWorkerThread();
void on_ActivateButton_clicked();
void on_DisactivateButton_clicked();
private:
Ui::Dialog *ui;
bool runFlag;
};
#endif // DIALOG_H
//main.cpp
#include "dialog.h"
#include <QApplication>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
Dialog w;
w.show();
return a.exec();
}
The GUI is
