managesieve: fix list header tooltip

diff --git a/src/plugins/managesieve/sieve_manager.c b/src/plugins/managesieve/sieve_manager.c
index bae6afd5d97787fdc60186f41a14356ad252ce3c..b2bff52809cf32f53658dbfb033564fc8629b1fa 100644 (file)
--- a/src/plugins/managesieve/sieve_manager.c
+++ b/src/plugins/managesieve/sieve_manager.c
@@ -450,6 +450,7 @@ static void filters_create_list_view_columns(SieveManagerPage *page,
 {
        GtkTreeViewColumn *column;
        GtkCellRenderer *renderer;
+       GtkWidget *label;
 
        /* Name */
        renderer = gtk_cell_renderer_text_new();
@@ -472,8 +473,14 @@ static void filters_create_list_view_columns(SieveManagerPage *page,
                 NULL);
        gtk_tree_view_append_column(GTK_TREE_VIEW(list_view), column);
        gtk_tree_view_column_set_alignment (column, 0.5);
-       CLAWS_SET_TIP(gtk_tree_view_column_get_widget(column),
+
+       /* the column header needs a widget to have a tooltip */
+       label = gtk_label_new(gtk_tree_view_column_get_title(column));
+       gtk_widget_show(label);
+       gtk_tree_view_column_set_widget(column, label);
+       CLAWS_SET_TIP(label,
                        _("An account can only have one active script at a time."));
+
        g_signal_connect(G_OBJECT(renderer), "toggled",
                         G_CALLBACK(filter_active_toggled), page);