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-rw-r--r--src/engine/interface.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/engine/interface.h b/src/engine/interface.h
index f3f59029..9dd0446f 100644
--- a/src/engine/interface.h
+++ b/src/engine/interface.h
@@ -118,6 +118,7 @@ int gfx_get_video_modes(VIDEO_MODE *list, int maxcount);
 void gfx_set_vsync(int val);
 
 int gfx_window_active();
+int gfx_window_open();
 
 /* textures */
 /*