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diff --git a/3rdparty/include/SDL2/SDL_quit.h b/3rdparty/include/SDL2/SDL_quit.h
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+/*
+ Simple DirectMedia Layer
+ Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>
+
+ This software is provided 'as-is', without any express or implied
+ warranty. In no event will the authors be held liable for any damages
+ arising from the use of this software.
+
+ Permission is granted to anyone to use this software for any purpose,
+ including commercial applications, and to alter it and redistribute it
+ freely, subject to the following restrictions:
+
+ 1. The origin of this software must not be misrepresented; you must not
+ claim that you wrote the original software. If you use this software
+ in a product, an acknowledgment in the product documentation would be
+ appreciated but is not required.
+ 2. Altered source versions must be plainly marked as such, and must not be
+ misrepresented as being the original software.
+ 3. This notice may not be removed or altered from any source distribution.
+*/
+
+/**
+ * \file SDL_quit.h
+ *
+ * Include file for SDL quit event handling.
+ */
+
+#ifndef SDL_quit_h_
+#define SDL_quit_h_
+
+#include "SDL_stdinc.h"
+#include "SDL_error.h"
+
+/**
+ * \file SDL_quit.h
+ *
+ * An ::SDL_QUIT event is generated when the user tries to close the application
+ * window. If it is ignored or filtered out, the window will remain open.
+ * If it is not ignored or filtered, it is queued normally and the window
+ * is allowed to close. When the window is closed, screen updates will
+ * complete, but have no effect.
+ *
+ * SDL_Init() installs signal handlers for SIGINT (keyboard interrupt)
+ * and SIGTERM (system termination request), if handlers do not already
+ * exist, that generate ::SDL_QUIT events as well. There is no way
+ * to determine the cause of an ::SDL_QUIT event, but setting a signal
+ * handler in your application will override the default generation of
+ * quit events for that signal.
+ *
+ * \sa SDL_Quit()
+ */
+
+/* There are no functions directly affecting the quit event */
+
+#define SDL_QuitRequested() \
+ (SDL_PumpEvents(), (SDL_PeepEvents(NULL,0,SDL_PEEKEVENT,SDL_QUIT,SDL_QUIT) > 0))
+
+#endif /* SDL_quit_h_ */