diff --git a/src/video/win32_v.h b/src/video/win32_v.h
--- a/src/video/win32_v.h
+++ b/src/video/win32_v.h
@@ -40,7 +40,12 @@ public:
 protected:
 	HWND main_wnd;          ///< Handle to system window.
 	bool fullscreen;        ///< Whether to use (true) fullscreen mode.
+	bool has_focus = false; ///< Does our window have system focus?
 	Rect dirty_rect;        ///< Region of the screen that needs redrawing.
+	int width = 0;          ///< Width in pixels of our display surface.
+	int height = 0;         ///< Height in pixels of our display surface.
+	int width_org = 0;      ///< Original monitor resolution width, before we changed it.
+	int height_org = 0;     ///< Original monitor resolution height, before we changed it.
 
 	bool draw_threaded;          ///< Whether the drawing is/may be done in a separate thread.
 	bool buffer_locked;          ///< Video buffer was locked by the main thread.