Qt/Widgets/Timer

Timer.cpp

#include <QProgressDialog>
#include <QApplication>
 
#include "form.h"
 
int main( int argc, char **argv )
{
  QApplication app(argc, argv);
  MainWindow window;
 
  window.show();
 
  return app.exec();
}

form.cpp

#include <QtGui>
#include <QImage>
 
#include "form.h"
#include "MyClass.h"
 
#include <iostream>
 
Form::Form(QWidget *parent)
    : QWidget(parent)
{
  setupUi(this);
}
 
void Form::on_btnOpen_clicked()
{
  QThread* thread = new QThread;
 
  MyClass* myClass = new MyClass;
  myClass->moveToThread(thread);
  connect(thread, SIGNAL(started()), myClass, SLOT(start()));
  connect(myClass, SIGNAL(finished()), thread, SLOT(quit()));
  thread->start();
  //a->wait();
 
  std::cout << "exit." << std::endl;
}

form.h

#ifndef FORM_H
#define FORM_H
 
#include "ui_form.h"
 
class Form : public QWidget, private Ui::Form
{
Q_OBJECT
 
public slots:
 
  void on_btnOpen_clicked();
 
public:
    Form(QWidget *parent = 0);
 
};
 
#endif

main.ui

<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
 <class>MainWindow</class>
 <widget class="QMainWindow" name="MainWindow">
  <property name="geometry">
   <rect>
    <x>0</x>
    <y>0</y>
    <width>205</width>
    <height>169</height>
   </rect>
  </property>
  <property name="windowTitle">
   <string>MainWindow</string>
  </property>
  <widget class="QWidget" name="centralwidget">
   <widget class="QPushButton" name="btnStart">
    <property name="geometry">
     <rect>
      <x>60</x>
      <y>90</y>
      <width>91</width>
      <height>28</height>
     </rect>
    </property>
    <property name="text">
     <string>Start</string>
    </property>
   </widget>
  </widget>
 </widget>
 <resources/>
 <connections/>
</ui>

CMakeLists.txt

cmake_minimum_required(VERSION 2.6)
 
PROJECT(Timer)
 
FIND_PACKAGE(Qt4 REQUIRED)
INCLUDE(${QT_USE_FILE})
 
QT4_WRAP_UI(UISrcs main.ui)
QT4_WRAP_CPP(MOCSrcs form.h)
 
include_directories(${include_directories} ${CMAKE_CURRENT_SOURCE_DIR} ${CMAKE_CURRENT_BINARY_DIR})
 
ADD_EXECUTABLE(Timer Timer.cpp form.h form.cpp ${UISrcs} ${MOCSrcs})
TARGET_LINK_LIBRARIES(Timer ${QT_LIBRARIES})