toolitem = gtk_tool_item_new();
gtk_container_add (GTK_CONTAINER(toolitem), hbox);
gtk_toolbar_insert(GTK_TOOLBAR(tbar), GTK_TOOL_ITEM(toolitem), -1);
toolitem = gtk_tool_item_new();
gtk_container_add (GTK_CONTAINER(toolitem), hbox);
gtk_toolbar_insert(GTK_TOOLBAR(tbar), GTK_TOOL_ITEM(toolitem), -1);