Small demo of QT page layout class

 

 

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
#include<QPushButton>
#include<QHBoxLayout>
#include<QtWidgets>

namespace Ui {
class MainWindow;
}

class MainWindow : public QMainWindow
{
    Q_OBJECT

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

private:
    Ui::MainWindow *ui;
    QPushButton *pq_returnBtn , *pq_okBtn;
    QHBoxLayout* pq_hBoxLayout;
    QWidget *widget;
};

#endif // MAINWINDOW_H

#include "mainwindow.h"
#include "ui_mainwindow.h"


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

    this->setStyleSheet("QWidget:focus{outline: none;}");
    pq_returnBtn = new QPushButton(this);
    pq_returnBtn->setStyleSheet("QPushButton{width:1px;height:1px; }"
                                "QPushButton:focus{width:1px;height:1px; }");
    pq_returnBtn->setText("button");

    pq_okBtn = new QPushButton(this);
    pq_okBtn->setText("ok");


    widget = new QWidget();
    this->setCentralWidget(widget);

    //  Layout status bar 
    pq_hBoxLayout = new QHBoxLayout();
    pq_hBoxLayout->addWidget(pq_okBtn);
    //  Add springs to the horizontal layout 
    pq_hBoxLayout->addStretch();
    pq_hBoxLayout->addWidget(pq_returnBtn);

    //  The horizontal layout content margin is set to 0
//    pq_hBoxLayout->setContentsMargins(20,0,20,0);
    widget->setLayout(pq_hBoxLayout);
    widget->show();
}

MainWindow::~MainWindow()
{
    delete pq_returnBtn;
    delete pq_hBoxLayout;
    delete widget;
    delete ui;
}