Cannot create Qstatemachine inside constructor

ion_knight

Ok getting a problem where the state will not change when inside a constructor. When it's in main it works fine, so at a bit of a loss really now. If anyone has an idea what I am doing wrong please let me know.

main.cpp
@#include "widget.h"
#include <QApplication>
#include <QPushButton>
#include <QVBoxLayout>
#include <QStateMachine>
#include <QState>
#include <QRectF>
#include <QLabel>

int main(int argc, char *argv[])
{
QApplication a(argc, argv);

Widget w;
w.show();

return a.exec&#40;&#41;;

}
@

widget.cpp
@#include "widget.h"
#include "ui_widget.h"

#include <QApplication>
#include <QPushButton>
#include <QVBoxLayout>
#include <QStateMachine>
#include <QState>
#include <QRectF>
#include <QLabel>

Widget::Widget(QWidget *parent) :
QWidget(parent),
ui(new Ui::Widget)
{
ui->setupUi(this);

QWidget *window = new QWidget(this);

/* Here created the buttons */

QPushButton *button1 = new QPushButton ("1");
//QLabel *Current_State(&window);
QLabel *Current_State= new QLabel;
Current_State->setText("NO STATE");
// QPushButton *button2 = new QPushButton ("2");
//QPushButton *button3 = new QPushButton ("3");

/* Here created the Layout */

QVBoxLayout  *vbox = new QVBoxLayout;

/* Here the buttons are added  in the Layout */

vbox->addWidget(button1);
vbox->addWidget(Current_State);

window->setLayout(vbox);
window->resize(200,100);

/* The state machine is created */

QStateMachine machine;

/* State are created  */

QState *state1 = new QState();
QState *state2 = new QState();
QState *state3 = new QState();

state1->assignProperty(Current_State, "text", "In State 1");
state2->assignProperty(Current_State, "text", "In State 2");
state3->assignProperty(Current_State, "text", "In State 3");


state1->addTransition(button1, SIGNAL(clicked()), state2);
state2->addTransition(button1, SIGNAL(clicked()),state3);
state3->addTransition(button1, SIGNAL(clicked()),state1);

/* States are added in state machine */

machine.addState(state1);
machine.addState(state2);
machine.addState(state3);

/*  Set the state initial for the state machine */

machine.setInitialState(state1);

/* Start the state machine */
machine.start();

}

Widget::~Widget()
{
delete ui;
}@

dheerendra

QStateMachine machine is stack variable.

Try the following

QStateMachine *machine = new QStateMachine;