Two Way Button Problem

ciclonite

Hi all,
Sorry for noob question but i'm a newbie with qt and C++ isn't my primary language.
I've created in Qt Design a button named ResistenzeOn, with a slot clicked(); .
In my mainwindow.h i've declared this :

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QtGui>
#include <QSize>
#include <QDebug>
#include <QMainWindow>
#include <QMessageBox>
#include <QWidget>

namespace Ui {
class MainWindow;
}

class MainWindow : public QMainWindow
{
Q_OBJECT

public:
explicit MainWindow(QWidget *parent = 0);

QState *off;
QState *on;
QStateMachine machine;



~MainWindow();

private slots:

void on_ResistenzeOn_clicked();

private:

Ui::MainWindow *ui;

};

#endif // MAINWINDOW_H

In mainwindow.cpp:

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

off = new QState();
off->assignProperty(ui->ResistenzeOn,"text","On");
off->setObjectName("off");

on = new QState();
on->assignProperty(ui->ResistenzeOn,"text","Off");

off->addTransition(ui->ResistenzeOn, SIGNAL(on_ResistenzeOn_clicked()), on);
on ->addTransition(ui->ResistenzeOn, SIGNAL(on_ResistenzeOn_clicked()), off);

machine.addState(off);
machine.addState(on);

machine.setInitialState(off);
machine.start();

}

MainWindow::~MainWindow()
{
delete ui;
}

void MainWindow::on_ResistenzeOn_clicked()
{

gpioWrite(OUT_RES, 1);
ui->labelResistence->setPixmap(MainWindow::fireScaled);

}

But when i run the program the output is :
QState::addTransition: no such signal QPushButton::on_ResistenzeOn_clicked()

I cannot understand where is the problem.
Ho can i call a specific function based on the button state?
Thanks,
Giovanni

SGaist

Hi,

on_ResistenzeOn_clicked is not a signal but a slot that will be automatically connect to your button when ui->setupUi(this) is called. What you want to connect to your states is the button's clicked() signal.

ciclonite

SGaist, thanks a lot,
but how can i specify which function is called when the transition occur?
Thanks,
Giovanni

SGaist

What function would you like to call ?

ciclonite

@SGaist : Thanks for your time.
I have a function that set to ON or OFF a PIN using PIGPIO:

gpioWrite(pinNumber, level);

When i click and the state go to off i need to call gpioWrite(21,0); when go to on i will call gpioWrite(21,1);

Thanks.
Giovanni

SGaist

Do you have a dedicated object that handles the GPIOs ?

In any case you can use two slots, one for each state that you can connect to the corresponding state's entered signal.