diff options
Diffstat (limited to 'examples/opengl/openglwindow/openglwindow.h')
| -rw-r--r-- | examples/opengl/openglwindow/openglwindow.h | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/examples/opengl/openglwindow/openglwindow.h b/examples/opengl/openglwindow/openglwindow.h index 7206fc57ef..41bcbab9c4 100644 --- a/examples/opengl/openglwindow/openglwindow.h +++ b/examples/opengl/openglwindow/openglwindow.h @@ -1,14 +1,15 @@ // Copyright (C) 2016 The Qt Company Ltd. // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause +#ifndef OPENGLWINDOW_H +#define OPENGLWINDOW_H + #include <QWindow> #include <QOpenGLFunctions> -QT_BEGIN_NAMESPACE -class QPainter; -class QOpenGLContext; -class QOpenGLPaintDevice; -QT_END_NAMESPACE +QT_FORWARD_DECLARE_CLASS(QPainter) +QT_FORWARD_DECLARE_CLASS(QOpenGLContext) +QT_FORWARD_DECLARE_CLASS(QOpenGLPaintDevice) //! [1] class OpenGLWindow : public QWindow, protected QOpenGLFunctions @@ -42,3 +43,4 @@ private: }; //! [1] +#endif // OPENGLWINDOW_H |