consts and small ensurance (though should be correct to begin with)

1 files changed, 3 insertions, 3 deletions

diff --git a/include/rofi.h b/include/rofi.h
index 28b66197..81230f4b 100644
--- a/include/rofi.h
+++ b/include/rofi.h
@@ -42,7 +42,7 @@ typedef enum
 typedef SwitcherMode ( *switcher_callback )( char **input, void *data );
 typedef void ( *switcher_free )( Switcher *data );
 
-typedef char * ( *get_display_value )( unsigned int selected_line, struct _Switcher *data, int *state, int get_entry );
+typedef char * ( *get_display_value )( unsigned int selected_line, const Switcher *data, int *state, int get_entry );
 /**
  * State returned by the rofi window.
  */
@@ -79,7 +79,7 @@ typedef enum
  *
  * @returns 1 when it matches, 0 if not.
  */
-typedef int ( *menu_match_cb )( char **tokens, int not_ascii, int case_sensitive, unsigned int index, Switcher *data );
+typedef int ( *menu_match_cb )( char **tokens, int not_ascii, int case_sensitive, unsigned int index, const Switcher *data );
 
 /**
  * @param sw the Switcher to show.
@@ -297,7 +297,7 @@ struct _Switcher
 
     get_display_value mgrv;
 
-    int               (*is_not_ascii)( struct _Switcher *sw, unsigned int index );
+    int               (*is_not_ascii)( const struct _Switcher *sw, unsigned int index );
 
     // Pointer to private data.
     void              *private_data;