QObject Problem with using sender() to array of buttons

MTWK

Hello everyone,

I have some problems with programming a qt application. It's a type of game called "Tic Tac Toe".
The main problem is that after clicking any of button the program is not responding. I guess it's about wrong using sender() function.
Here is my code from mainwindow.cpp:

#include <QtWidgets>
#include <QtGui>
#include <QGridLayout>
#include <QtCore>
#include <QPushButton>
#include <QObject>
#include <QString>

#include "mainwindow.h"
#include "ui_mainwindow.h"
#define A 3


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

MainWindow::~MainWindow()
{
    delete ui;

}

MainWindow::Draw(int a)
{
        int count=1;
        int i, j;
        QGridLayout *layout = new QGridLayout;
        QWidget *window = new QWidget;
        QPushButton *Button[a][a];

        for(i=0;i<a;i++)
        {
            for(j=0;j<a;j++)
            {
                if(count<=(a*a))
                {
                    Button[i][j] = new QPushButton(QString::number(count));
                    Button[i][j]->setMinimumWidth(100);
                    Button[i][j]->setMinimumHeight(100);
                    Button[i][j]->setText(QString::number(count));
                    Button[i][j]->setProperty("s", i);
                    Button[i][j]->setProperty("d", j);
                    layout->addWidget(Button[i][j],i,j);
                    connect(Button[i][j],SIGNAL(clicked(bool)),this,SLOT(test()));
                    window->setLayout(layout);
                    count++;
                }
            }
        }

        window->show();
        return 0;

}

void MainWindow::test()
{
    QObject * pSender = sender();
    int s = pSender->property("s").toInt();
    int d = pSender->property("d").toInt();
    if(turn%2==0)
    {
        Button[s][d]->setStyleSheet("{ border-image: url(:x.png);}");
        Button[s][d]->setEnabled(false);
    }
    else
    {
        Button[s][d]->setStyleSheet("{ border-image: url(:kolko.jpg);}");
        Button[s][d]->setEnabled(false);
    }
   turn++;
}

my code from header mainwindow.h:

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
#include <QApplication>
#include <QGridLayout>
#include <QtGui>
#include <QtCore>
#include <QtWidgets>

namespace Ui {
class MainWindow;
class ButtonWidget;
}

class MainWindow : public QMainWindow
{
    Q_OBJECT

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

private slots:
    int Draw(int b);
    void test();

signals:
   clicked(bool);

private:
    Ui::MainWindow *ui;
    QPushButton *Button[3][3];
    int count=1;
    int i, j;
    int turn=0;
};

#endif // MAINWINDOW_H

and my main.cpp if u need:

#include "mainwindow.h"
#include <QApplication>
#include <QGridLayout>
#include <QtGui>
#include <QtCore>
#include <QtWidgets>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    MainWindow w;
    return a.exec();
}

I would really appreciate if you could help me.

Christian Ehrlicher

@MTWK said in QObject Problem with using sender() to array of buttons:

QPushButton *Button[a][a];

You define it twice ...

mrjj

Hi
as mr @Christian-Ehrlicher says
it seems you have both
MainWindow::Draw(int a) {
QPushButton *Button[a][a]; // local to Draw

and
private:
Ui::MainWindow *ui;
QPushButton *Button[3][3]; // class member and not the one in Draw