if (current_task && current_task->recur) {
gtk_widget_set_sensitive(GTK_WIDGET(w_taskremove_btn), FALSE);
gtk_widget_set_tooltip_text
if (current_task && current_task->recur) {
gtk_widget_set_sensitive(GTK_WIDGET(w_taskremove_btn), FALSE);
gtk_widget_set_tooltip_text