typedef void (*GuiTimeEntryCallback)(char *str, gpointer data);
typedef void (*GuiTimeEntryEnterCallback)();

char *gui_time_entry_get_text(GtkWidget *widget);
void gui_time_entry_set_text(GtkWidget *widget, char *text);
GtkWidget *gui_time_entry_new(GCallback callback_changed = NULL, GCallback callback_enter = NULL, gpointer param = NULL);
GtkTextView *gui_time_entry_get_view(GtkWidget *widget);