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-rw-r--r--examples/datavisualization/texturesurface/main.cpp8
1 files changed, 8 insertions, 0 deletions
diff --git a/examples/datavisualization/texturesurface/main.cpp b/examples/datavisualization/texturesurface/main.cpp
index b2e7c9e3..adea272e 100644
--- a/examples/datavisualization/texturesurface/main.cpp
+++ b/examples/datavisualization/texturesurface/main.cpp
@@ -28,6 +28,7 @@
#include <QtWidgets/QGroupBox>
#include <QtWidgets/QCheckBox>
#include <QtWidgets/QLabel>
+#include <QtWidgets/QMessageBox>
#include <QtGui/QScreen>
#include <QtGui/QPainter>
@@ -37,6 +38,13 @@ int main(int argc, char **argv)
Q3DSurface *graph = new Q3DSurface();
QWidget *container = QWidget::createWindowContainer(graph);
+ 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() / 1.6));
container->setMaximumSize(screenSize);