designer needs namespace prefix; refs #167

src/designer/buttonlineeditwidgetifc.hxx

@@ -66,7 +66,7 @@ class ButtonLineEditWidgetIfc: public QObject,
     }
     QWidget *createWidget(QWidget *parent) {
       TRC;
-      return new ButtonLineEdit(parent);
+      return new qbrowserlib::ButtonLineEdit(parent);
     }
 };