DrawData          124 samples/cpp/detect_mser.cpp     DrawData* data = static_cast<DrawData*>(userdata);
DrawData          254 samples/cpp/detect_mser.cpp     DrawData *data = new DrawData;
DrawData           52 samples/gpu/opengl.cpp     DrawData* data = static_cast<DrawData*>(userdata);
DrawData           89 samples/gpu/opengl.cpp     DrawData data;