Open File works. I refactored the code and introduced a new type. I never used it as a pointer (their was no real reason), but I'm not really satisfied.

Signed-off-by: Nathan Samson <nathansamson@gmail.com>

display.h

@@ -5,13 +5,9 @@
 #include <gdk/gdk.h>
 #include <cairo.h>
 
-extern int selected_dive;
-#define current_dive (get_dive(selected_dive))
-
 extern GtkWidget *dive_profile_widget(void);
 extern GtkWidget *dive_info_frame(void);
 extern GtkWidget *extended_dive_info_widget(void);
-extern GtkWidget *create_dive_list(void);
 extern void update_dive_info(struct dive *dive);
 extern void repaint_dive(void);