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-rw-r--r--hacks/glx/gltrackball.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/hacks/glx/gltrackball.h b/hacks/glx/gltrackball.h
index ba9e574..2ccfb9a 100644
--- a/hacks/glx/gltrackball.h
+++ b/hacks/glx/gltrackball.h
@@ -19,6 +19,7 @@ typedef struct trackball_state trackball_state;
to make dragging the mouse on the window of a GL program do the right thing.
*/
extern trackball_state *gltrackball_init (int ignore_device_rotation_p);
+extern void gltrackball_free (trackball_state *);
/* Begin tracking the mouse: Call this when the mouse button goes down.
x and y are the mouse position relative to the window.