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sub-attaq example: Fix crash with software Open GL

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Check whether an Open GL context could be created, else
fall back to raster.

Task-number: QTBUG-64797
Change-Id: I91bba41b0efca85293a1a4af054842b9f309b126
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>
This commit is contained in:
Friedemann Kleint 2018-03-14 13:34:13 +01:00
parent 91b35011f5
commit 59343eef7d
1 changed files with 7 additions and 2 deletions
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9
examples/widgets/animation/sub-attaq/mainwindow.cpp
View File

@ -84,8 +84,13 @@ MainWindow::MainWindow() : QMainWindow(0)
view->setAlignment(Qt::AlignLeft | Qt::AlignTop); view->setAlignment(Qt::AlignLeft | Qt::AlignTop);
scene->setupScene(newAction, quitAction); scene->setupScene(newAction, quitAction);
#ifndef QT_NO_OPENGL #ifndef QT_NO_OPENGL
view->setViewport(new QGLWidget(QGLFormat(QGL::SampleBuffers))); QGLWidget *glWidget = new QGLWidget(QGLFormat(QGL::SampleBuffers));
if (glWidget->context()->isValid()) {
view->setViewport(glWidget);
} else {
qWarning("Unable to create an Open GL context with sample buffers, not using Open GL.");
delete glWidget;
}
#endif #endif
setCentralWidget(view); setCentralWidget(view);
} }