doc_src_qt4-styles.cpp

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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
 
const QStyleOptionFocusRect *focusRectOption =
        qstyleoption_cast<const QStyleOptionFocusRect *>(option);
if (focusRectOption) {
    ...
}
 
 
void MyWidget::paintEvent(QPaintEvent *event)
{
    QPainter painter(this);
    ...
 
    QStyleOptionFocusRect option(1);
    option.init(this);
    option.backgroundColor = palette().color(QPalette::Window);
 
    style().drawPrimitive(QStyle::PE_FrameFocusRect, &option, &painter,
                          this);
}