Hey all,

I'm having difficulties incorporating a simple state machine pushbutton in a widget.

The following code works fine:

Qt Code: 
  1. int main(int argc, char *argv[])
  2. {
  3.     QApplication a(argc, argv);
  4.  
  5.     QPushButton *pushButton1 = new QPushButton();
  6.     QtStateMachine machine;
  7.  
  8.     QtState *s1 = new QtState(machine.rootState());
  9.     s1->assignProperty(pushButton1, "text", "In s1");
  10.  
  11.     QtState *s2 = new QtState(machine.rootState());
  12.     s2->assignProperty(pushButton1, "text", "In s2");
  13.  
  14.     QtState *s3 = new QtState(machine.rootState());
  15.     s3->assignProperty(pushButton1, "text", "In s3");
  16.  
  17.     s1->addTransition(pushButton1, SIGNAL(clicked()), s2);
  18.     s2->addTransition(pushButton1, SIGNAL(clicked()), s3);
  19.     s3->addTransition(pushButton1, SIGNAL(clicked()), s1);
  20.  
  21.     pushButton1->resize(200, 200);
  22.     pushButton1->show();
  23.  
  24.     machine.setInitialState(s1);
  25.     machine.start();
  26.  
  27.     return a.exec();
  28. }
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But if I declare a widget in a separate file (widget.cpp and widget.h) and call it from main:
Qt Code: 
  1. int main(int argc, char *argv[])
  2. {
  3.     QApplication a(argc, argv);
  4.  
  5.  
  6.     Widget w;
  7.     w.show();
  8.  
  9.     return a.exec();
  10. }
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Definition within the widget:

Qt Code: 
  1. Widget::Widget(QWidget *parent)
  2.     : QWidget(parent)
  3. {
  4.     QVBoxLayout *mainLayout = new QVBoxLayout;
  5.     QPushButton *pushButton1 = new QPushButton();
  6.  
  7.     QtStateMachine machine;
  8.  
  9.     QtState *s1 = new QtState(machine.rootState());
  10.     s1->assignProperty(pushButton1, "text", "In s1");
  11.  
  12.     QtState *s2 = new QtState(machine.rootState());
  13.     s2->assignProperty(pushButton1, "text", "In s2");
  14.  
  15.     QtState *s3 = new QtState(machine.rootState());
  16.     s3->assignProperty(pushButton1, "text", "In s3");
  17.  
  18.     s1->addTransition(pushButton1, SIGNAL(clicked()), s2);
  19.     s2->addTransition(pushButton1, SIGNAL(clicked()), s3);
  20.     s3->addTransition(pushButton1, SIGNAL(clicked()), s1);
  21.  
  22.     machine.setInitialState(s1);
  23.     machine.start();
  24.  
  25.     mainLayout->addWidget(pushButton1);
  26.     setLayout(mainLayout);
  27. }
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The button appears but no text appears. i.e. the state machine doesn't seem to work.

Any help would be deeply appreciate, Thanks.

Regards,
Pembar