QStateMachine

[yuvaram]

HI,

Widget::Widget(QWidget *parent)
: QWidget(parent)

{
glayout = new QGridLayout(this);
button = new QPushButton("Button");
lb_1 = new QLabel("Hiii");

glayout->addWidget(button,0,1);
glayout->addWidget(lb_1,1,1);

QStateMachine machine;
   QState *s1 = new QState();
   QState *s2 = new QState();
   QState *s3 = new QState();

      s1->addTransition(button, SIGNAL(clicked()), s2);
      s2->addTransition(button, SIGNAL(clicked()), s3);
      s3->addTransition(button, SIGNAL(clicked()), s1);

      s1->assignProperty(lb_1, "text", "In state s1");
      s2->assignProperty(lb_1, "text", "In state s2");
      s3->assignProperty(lb_1, "text", "In state s3");

      machine.addState(s1);
      machine.addState(s2);
      machine.addState(s3);
      machine.setInitialState(s1);
      machine.start();

}

In the above i am trying to change the label for each state change.
But unable to get required output.

[kshegunov]

@yuvaram

Without checking other things, machine goes out of scope after the constructor finishes. You should fix that.

[dheerendra]

Yuvaraj

QStateMachine machine; is local object. Allocate the object on heap

QStateMachine *machine = new QStateMachine;
Rest of the things should work fine.