setMaximunSize(?,?)

[MyNameIsQt]

The following function executes the program according to the set size(960x640).

setMinimumSize(960, 640);

When I first run the program, I want to set the browser to full screen size. How can I do this?
setMaximunSize(?,?)

[Pl45m4]

@MyNameIsQt

What browser?!

You can show any window widget in fullscreen mode using

widget->showFullScreen();

or try

widget->showMaximized();

for maximum size window widget.

Note: Both might not work on all platforms/window managers.

[MyNameIsQt]

This post is deleted!

[MyNameIsQt]

@Pl45m4
Thanks :)
I solve it.

WpubEditor::WpubEditor(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::WpubEditor)
    , styleSheet()
    , mainLayout(nullptr)
    , vBoxLayout(nullptr)
    , buttonLayout(nullptr)
    , btnWrapper(nullptr)
    , stackedLayout(nullptr)
    , buttonLabel(nullptr)
    , m_pPubManager(nullptr)
    , webView(nullptr)
    , channel(nullptr)
{
    //setMinimumSize(960, 640);

    ui->setupUi(this);

    webView = new QWebEngineView(this); // QWebEngineView 객체 초기화
    setCentralWidget(webView);

    QString htmlPath = QFileInfo(__FILE__).dir().absolutePath() + "/main.html";

    QFile file(htmlPath);
    if (file.exists()) {
        webView->load(QUrl::fromLocalFile(htmlPath));
    } else {
        qDebug() << "Failed to load canvas.html. File not found.";
    }

    channel = new QWebChannel(webView->page());
    webView->page()->setWebChannel(channel);
    channel->registerObject("wpubEditor", this);

    createStatusBar();
    initResources();

    showMaximized();

}