diff options
Diffstat (limited to 'examples/datavisualization/itemmodel/main.cpp')
-rw-r--r-- | examples/datavisualization/itemmodel/main.cpp | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/examples/datavisualization/itemmodel/main.cpp b/examples/datavisualization/itemmodel/main.cpp index 77ec57a4..57fbb563 100644 --- a/examples/datavisualization/itemmodel/main.cpp +++ b/examples/datavisualization/itemmodel/main.cpp @@ -36,6 +36,7 @@ #include <QtGui/QFont> #include <QtCore/QDebug> #include <QtWidgets/QHeaderView> +#include <QtWidgets/QMessageBox> #define USE_STATIC_DATA @@ -248,6 +249,13 @@ int main(int argc, char **argv) QWidget *container = QWidget::createWindowContainer(graph); //! [0] + if (!graph->hasContext()) { + QMessageBox msgBox; + msgBox.setText("Couldn't initialize the OpenGL context."); + msgBox.exec(); + return -1; + } + QSize screenSize = graph->screen()->size(); container->setMinimumSize(QSize(screenSize.width() / 2, screenSize.height() / 2)); container->setMaximumSize(screenSize); |