Add new gases to the combo box in dive plan entry

Once again Gtk does everything it can to make our lives miserable. It
requires major hackery to be able to add new gases to the drop down lists
"on the fly". Right now this only works if you edit the gas and then use
Tab to move to the next field.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/display-gtk.h b/display-gtk.h
index 877822b80..083724a61 100644
--- a/display-gtk.h
+++ b/display-gtk.h
@@ -95,6 +95,7 @@ extern void update_progressbar(progressbar_t *progress, double value);
 extern void update_progressbar_text(progressbar_t *progress, const char *text);
 
 extern GtkWidget *create_date_time_widget(struct tm *time, GtkWidget **cal, GtkWidget **h, GtkWidget **m);
+extern void add_string_list_entry(const char *string, GtkListStore *list);
 
 extern GtkWidget *dive_profile_widget(void);
 extern GtkWidget *dive_info_frame(void);