vicon jittering, opengl no draw_refresh if no ovly for last frame

[goodguy/history.git] / cinelerra-5.1 / cinelerra / canvas.h

diff --git a/cinelerra-5.1/cinelerra/canvas.h b/cinelerra-5.1/cinelerra/canvas.h
index 89a7eb8268e375b6686df39e319ef5e79f3c9cb7..aa4879a125e28e34d763e1ab419061f6ebdaa08f 100644 (file)
--- a/cinelerra-5.1/cinelerra/canvas.h
+++ b/cinelerra-5.1/cinelerra/canvas.h
@@ -97,6 +97,7 @@ public:
        virtual int button_release_event() { return 0; };
        virtual int button_press_event();
        virtual int cursor_motion_event() { return 0; };
+       virtual int need_overlays() { return 1; }
        virtual void draw_overlays() { };
        virtual void toggle_controls() { } ;
        virtual int get_cwindow_controls() { return 0; };