text: 
  #ifndef VIEW_DRONE_ATTITUDE_H
  #define VIEW_DRONE_ATTITUDE_H 
  
  #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  #include <time.h>
  #include <sys/time.h>
  #include <math.h>
  #include <gtk/gtk.h>
  
  #define START_BUTTON_DA_SIZE 18
  
  #ifdef USE_ARDRONE_VICON
  #define VICON_BUTTON_DA_SIZE 18
  #endif
  
  #define MAGNETO_CALIBRATION_BUTTON_SIZE 18
  
  void set_control_state(int32_t control_state);
  
  #ifdef USE_ARDRONE_VICON
  void set_vicon_state(int32_t vicon_state);
  #endif
  
  void set_calibration_state( int32_t state);
  
  gboolean update_display(gpointer pData);
  
  #endif  //  VIEW_DRONE_ATTITUDE_H 
  