Add instructions to GPS map window title

This is not what I really wanted (which was the ability to add text to the
map itself), but it should be at least somewhat better than what we have
today (which is a complete lack of instructions).

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

1 files changed, 4 insertions, 2 deletions

diff --git a/gps.c b/gps.c
index f9c04b9dd..ec427fdd5 100644
--- a/gps.c
+++ b/gps.c
@@ -211,10 +211,12 @@ void show_map(OsmGpsMap *map, GtkWidget **window, struct dive *dive, void (*call
 		gtk_window_set_modal(GTK_WINDOW(*window), TRUE);
 		g_signal_connect(*window, "destroy", G_CALLBACK(on_close), (gpointer)window);
 		g_signal_connect(G_OBJECT(map), "scroll-event", G_CALLBACK(scroll_cb), NULL);
-        g_signal_connect(*window, "key_press_event", G_CALLBACK (key_press_event), NULL);
+		g_signal_connect(*window, "key_press_event", G_CALLBACK (key_press_event), NULL);
 	}
-	if (callback)
+	if (callback) {
 		g_signal_connect(G_OBJECT(map), "button-press-event", G_CALLBACK(button_cb), callback);
+		gtk_window_set_title(GTK_WINDOW(*window), _("Use right click to mark dive location at cursor"));
+	}
 	gtk_widget_show_all(*window);
 	if (callback)
 		gtk_grab_add(*window);