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-rw-r--r--examples/opengl/pbuffers/glwidget.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/examples/opengl/pbuffers/glwidget.h b/examples/opengl/pbuffers/glwidget.h
index 991e8b9692..c019abef98 100644
--- a/examples/opengl/pbuffers/glwidget.h
+++ b/examples/opengl/pbuffers/glwidget.h
@@ -47,6 +47,7 @@
class Geometry;
class Cube;
class Tile;
+class QGLPixelBuffer;
class GLWidget : public QGLWidget
{