fix #11668.

4bb220bb · Fangjun Kuang · 0f298a42 · 4bb220bb
Commit 4bb220bb authored Jun 02, 2018 by Fangjun Kuang
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widgets.hpp modules/viz/include/opencv2/viz/widgets.hpp +1 -1

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--- a/modules/viz/include/opencv2/viz/widgets.hpp
+++ b/modules/viz/include/opencv2/viz/widgets.hpp
@@ -95,7 +95,7 @@ namespace cv
            Widget();
            Widget(const Widget& other);
            Widget& operator=(const Widget& other);
-            ~Widget();
+            virtual ~Widget();

            /** @brief Creates a widget from ply file.