- (void) stopReceivingLibhbNotifications;
- (IBAction) createMoviePreview: (id) sender;
-- (void) libhbStateChanged: (hb_state_t &) state;
+- (void) libhbStateChanged: (hb_state_t ) state;
- (IBAction) showMoviePreview: (NSString *) path;
- (IBAction) previewDurationPopUpChanged: (id) sender;