diff options
Diffstat (limited to 'examples/datavisualization/bars/main.cpp')
-rw-r--r-- | examples/datavisualization/bars/main.cpp | 34 |
1 files changed, 25 insertions, 9 deletions
diff --git a/examples/datavisualization/bars/main.cpp b/examples/datavisualization/bars/main.cpp index f6d8752c..6eb718fa 100644 --- a/examples/datavisualization/bars/main.cpp +++ b/examples/datavisualization/bars/main.cpp @@ -1,23 +1,31 @@ -/****************************************************************************** +/**************************************************************************** ** -** Copyright (C) 2015 The Qt Company Ltd. -** Contact: http://www.qt.io/licensing/ +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ ** -** This file is part of the Qt Data Visualization module. -** -** $QT_BEGIN_LICENSE:COMM$ +** This file is part of the Qt Data Visualization module of the Qt Toolkit. ** +** $QT_BEGIN_LICENSE:GPL$ ** Commercial License Usage ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and The Qt Company. For licensing terms -** and conditions see http://www.qt.io/terms-conditions. For further -** information use the contact form at http://www.qt.io/contact-us. +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3 or (at your option) any later version +** approved by the KDE Free Qt Foundation. The licenses are as published by +** the Free Software Foundation and appearing in the file LICENSE.GPL3 +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-3.0.html. ** ** $QT_END_LICENSE$ ** -******************************************************************************/ +****************************************************************************/ #include "graphmodifier.h" @@ -30,6 +38,7 @@ #include <QtWidgets/QSlider> #include <QtWidgets/QFontComboBox> #include <QtWidgets/QLabel> +#include <QtWidgets/QMessageBox> #include <QtGui/QScreen> #include <QtGui/QFontDatabase> @@ -41,6 +50,13 @@ int main(int argc, char **argv) QWidget *container = QWidget::createWindowContainer(widgetgraph); //! [0] + if (!widgetgraph->hasContext()) { + QMessageBox msgBox; + msgBox.setText("Couldn't initialize the OpenGL context."); + msgBox.exec(); + return -1; + } + QSize screenSize = widgetgraph->screen()->size(); container->setMinimumSize(QSize(screenSize.width() / 2, screenSize.height() / 1.5)); container->setMaximumSize(screenSize); |