https://github.com/BestImageViewer/geeqie/issues/401
Ensure display of informative text such as "Reading dimensions.."
dw->extra_label = gtk_progress_bar_new();
gtk_progress_bar_set_fraction(GTK_PROGRESS_BAR(dw->extra_label), 0.0);
+#if GTK_CHECK_VERSION(3,0,0)
+ gtk_progress_bar_set_text(GTK_PROGRESS_BAR(dw->extra_label), "");
+ gtk_progress_bar_set_show_text(GTK_PROGRESS_BAR(dw->extra_label), TRUE);
+#endif
gtk_box_pack_end(GTK_BOX(status_box), dw->extra_label, FALSE, FALSE, 0);
gtk_widget_show(dw->extra_label);