src_gui_kernel_qwidget.cpp

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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
 
w->setWindowState(w->windowState() ^ Qt::WindowFullScreen);
 
 
w->setWindowState((w->windowState() & ~Qt::WindowMinimized) | Qt::WindowActive);
 
 
width = baseSize().width() + i * sizeIncrement().width();
height = baseSize().height() + j * sizeIncrement().height();
 
 
aWidget->window()->setWindowTitle("New Window Title");
 
 
setCursor(Qt::IBeamCursor);
 
 
QPixmap pixmap(widget->size());
widget->render(&pixmap);
 
 
QPainter painter(this);
...
painter.end();
myWidget->render(this);
 
 
setTabOrder(a, b); // a to b
setTabOrder(b, c); // a to b to c
setTabOrder(c, d); // a to b to c to d
 
 
setTabOrder({a, b, c, d}); // a to b to c to d
 
 
// WRONG
setTabOrder(c, d); // c to d
setTabOrder(a, b); // a to b AND c to d
setTabOrder(b, c); // a to b to c, but not c to d
 
 
void MyWidget::closeEvent(QCloseEvent *event)
{
    QSettings settings("MyCompany", "MyApp");
    settings.setValue("geometry", saveGeometry());
    QWidget::closeEvent(event);
}
 
 
QSettings settings("MyCompany", "MyApp");
myWidget->restoreGeometry(settings.value("myWidget/geometry").toByteArray());
 
 
setUpdatesEnabled(false);
bigVisualChanges();
setUpdatesEnabled(true);