Connecting Buttons with custom signals and slots

[Thank You]

Re:
https://forum.qt.io/topic/120733/connecting-buttons-of-one-page-to-label-of-another-page/13

#ifndef MAINWIN_H
#define MAINWIN_H

#include <QMainWindow>
#include<QMessageBox>
#include<QPushButton>
#include<navigation.h>

QT_BEGIN_NAMESPACE
namespace Ui { class mainwin; }
QT_END_NAMESPACE

class mainwin : public QMainWindow
{
Q_OBJECT

public:
mainwin(QWidget *parent = nullptr);
~mainwin();
navigation *nav_bar;
private slots:
void homeButtonClickedSlot();

private slots:
void on_home_button_clicked();
void on_about_button_clicked();
void on_contact_button_clicked();
void on_settings_button_clicked();
void on_charts_button_clicked();
private:
Ui::mainwin *ui;
};
#endif // MAINWIN_H

This is mainwin.h

#include "mainwin.h"
#include "ui_mainwin.h"

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

//connection to buttons
nav_bar = new navigation;
connect(nav_bar,SIGNAL(homeButtonClickedSignal()),this,SLOT(homeButtonClickedSlot()));

}

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

void mainwin::homeButtonClickedSlot()
{
on_home_button_clicked();
QMessageBox::information(this, "Title", "Hello");
}

void mainwin::on_home_button_clicked()
{
QMessageBox::information(this, "Title" , "Button is clicked");
QStackedWidget *stackWidget = ui->mainApp;
stackWidget->setCurrentIndex(0);
}

mainwin.cpp

#include "navigation.h"
#include "ui_navigation.h"

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

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

void navigation::on_home_clicked()
{
emit homeButtonClickedSignal();
QMessageBox::information(this,"title","clicked" );

}

navigation.cpp

#ifndef NAVIGATION_H
#define NAVIGATION_H

#include <QWidget>
#include<QPushButton>
#include<QMessageBox>

namespace Ui {
class navigation;
}

class navigation : public QWidget
{
Q_OBJECT

public:
explicit navigation(QWidget *parent = nullptr);
~navigation();

signals:
void homeButtonClickedSignal();

private slots:
void on_home_clicked();

private:
Ui::navigation *ui;
};

#endif // NAVIGATION_H

navigation.h

Here the navigation pannel is navigation.ui and whole thing is mainwin.ui

Can anyone say why this is not functioning

[jsulm]

@Thank-You Then don't do

nav_bar = new navigation;

Use the one from your ui->

[jsulm]

@Thank-You said in Connecting Buttons with custom signals and slots:

why this is not functioning

What is not functioning?

[J.Hilk]

@Thank-You I'm almost 100% sure, this "nav_bar" is not the one you see on your screen:

{
ui->setupUi(this);

//connection to buttons
nav_bar = new navigation;
connect(nav_bar,SIGNAL(homeButtonClickedSignal()),this,SLOT(homeButtonClickedSlot()));

}

change it to the following and see if you suddenly have 2 Navbars

{
ui->setupUi(this);

//connection to buttons
nav_bar = new navigation;
nav_bar->resize(100,500);
nav_bar->show();
connect(nav_bar,SIGNAL(homeButtonClickedSignal()),this,SLOT(homeButtonClickedSlot()));

}

[Thank You]

@jsulm The buttons are not functioning

[Thank You]

@J-Hilk You can exactly see my code
https://filebin.net/3o8y2q5zwxb0l0sa
Yes it is the same

[J.Hilk]

@Thank-You

I just checked and its not!!!!!

inside mainwin ui is a navigation item, thats the one you see on screen, the one you create inside the constructor and connect your signals to is a 2nd one and not show!!

You should really test what I wrote and you will see it for yourself instead of simply refusing it.

[Thank You]


Yes its working but i dont need this I just want the one in right side not separately

[J.Hilk]

@Thank-You
from looking at sour source code,

this should work:

{
ui->setupUi(this);

//connection to buttons
connect(ui->navigation_menu,SIGNAL(homeButtonClickedSignal()),this,SLOT(homeButtonClickedSlot()));

}

[jsulm]

@Thank-You Then don't do

nav_bar = new navigation;

Use the one from your ui->

[Thank You]

@jsulm Yes it did work.
Silly me just using new instead of assigning it to ui->navigation_menu(it is the object name in ui).

Thank You

[jsulm]

@Thank-You said in Connecting Buttons with custom signals and slots:

assigning it to ui->navigation

Not sure what you mean. You should not assign anything to ui->navigation - it is set up when you call

ui->setupUi(this);

[Thank You]

@jsulm Sorry It was mistake.
I have corrected it.