Switch screens (.ui) on same window without opening new window with C++

aabdn

How to open multiple UI screen on same window with pushbutton click (without opening new window)? when I click button on first.ui, it should bring second.ui and when I click pushbutton on second.ui, it shoud bring first.ui, wthout opening new window. I have found information about doing this on PyQt5 but I want to do it in c++, can someone help me in this regards, also please share a sample code as I can know, I am beginner, i might need example code to understand.
Thanks!

ChrisW67

Syntax aside, this is the same in C++ or Python.

The cleanest method is to put the two widgets, one for each Designer form, in a QStackedWidget and switch between them with the QPushbuttons (or whatever other mechanism you like). Alternatively use a QTabWidget to contain the two forms.

aabdn

@ChrisW67 Can you please share any example code just as reference, I got your meaning what i need to do, if there will be some example code, it will help me alot as i am beginner in Qt.

jsulm

@aabdn There is already example code in the documentation @ChrisW67 gave you

mrjj

@aabdn

Hi
You just place the QStackedWidger on the main window.
Then right-click and use "Add page"

Then on the buttons where you want to switch between the pages,
you call
ui->stackedWidget->setCurrentIndex(1);
with index 0 or 1 to switch between the pages.

And that is it :)

aabdn

@mrjj this is already done by me, I am sharing a link, I want to switch my first.ui and second.ui in this way with pushbutton, both should be displayed on same window.
https://www.youtube.com/watch?v=82v2ZR-g6wY&t=585s

ChrisW67

Complete example with dummy page widgets. This, I think, is a better example than the Python in the video.

#include <QApplication>
#include <QWidget>
#include <QVBoxLayout>
#include <QStackedWidget>
#include <QPushButton>
#include <QLabel>

class Page1: public QLabel
{
    Q_OBJECT
public:
    Page1(QWidget *p = nullptr):
        QLabel(p)
    {
        setText("Screen 1");
    }
};

class Page2: public QLabel
{
    Q_OBJECT
public:
    Page2(QWidget *p = nullptr):
        QLabel(p)
    {
        setText("Screen 2");
    }
};

class MainWindow: public QWidget {
    Q_OBJECT
public:
    MainWindow(QWidget *p = nullptr):
        QWidget(p)
    {
        QVBoxLayout *layout = new QVBoxLayout(this);

        m_stack = new QStackedWidget(this);
        layout->addWidget(m_stack);

        QWidget *page1 = new Page1(m_stack);
        m_stack->addWidget(page1);

        QWidget *page2 = new Page2(m_stack);
        m_stack->addWidget(page2);

        QPushButton *button = new QPushButton("Switch page", this);
        layout->addWidget(button);

        connect(button, &QPushButton::clicked, this, &MainWindow::switchPage);
    }
public slots:
    void switchPage()
    {
        if (m_stack->currentIndex() == 0)
            m_stack->setCurrentIndex(1);
        else
            m_stack->setCurrentIndex(0);
    }
private:
    QStackedWidget *m_stack;
};

int main(int argc, char **argv) {
	QApplication app(argc, argv);

    MainWindow mainWindow;
    mainWindow.show();
    return app.exec();
}
#include "main.moc"

aabdn

@ChrisW67 It worked for me, Thank you Chris