Need help, i want know how i mus do to see in main window piece of paper

Need help, i want know how i mus do to see in main window piece of paper like in office word

It is hard to understand what you are asking. Microsoft Office does not display "paper", it displays the formatted contents of documents. Maybe the Text Edit example from the Qt distribution might give you some help. If you want to display the image of a page you have scanned into your computer, then the Image Viewer example might be helpful.

If it is a matter of one single paper (as you call it so), put the paper widget in a layout and set the layout margins accordingly.

I would like it to look exactly like in the microsoft word
when the end of the card and the other is starting, I do not know how to write such leyout with margins

Here is an example
Attachment 12508

Code:

---

#include <QtWidgets>
 
class PageLayout : public QWidget
{
public:
    explicit PageLayout(QWidget * parent = 0)
        : QWidget(parent)
        , mLayout(new QGridLayout(this))
    {
        QPalette pal = palette();
        pal.setColor(QPalette::Background, Qt::darkGray);
        setPalette(pal);
        setAutoFillBackground(true);
        mLayout->setMargin(20);
        mLayout->setSpacing(20);
    }
 
    void addPage(QWidget * page)
    {
        page->setAutoFillBackground(true);
        page->setFixedSize(QSize(100, 100));
        mLayout->rowCount();
        mLayout->addWidget(page, mLayout->rowCount() + 1, 0, 1, 1, Qt::AlignCenter);
    }
 
private:
    QGridLayout * const mLayout;
};
 
int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
 
    PageLayout layout;
    layout.addPage(new QLabel("Page 1"));
    layout.addPage(new QLabel("Page 2"));
    layout.addPage(new QLabel("Page 3"));
    layout.addPage(new QLabel("Page 4"));
    layout.show();
 
    return a.exec();
}

---