try widget not main window; refs #167

src/qbrowserlib/swisswebwidget.hxx

@@ -22,10 +22,10 @@ namespace qbrowserlib {
       SwissWebView. Instanciate this and you have a complete
       browser. To be used inside a QTabBar, as main window or as
       docking widget. */
-  class SwissWebWidget: public QMainWindow, private Ui::SwissWebWidget {
+  class SwissWebWidget: public QWidget, private Ui::SwissWebWidget {
       Q_OBJECT;
     public:
-      SwissWebWidget(QWidget* p=0): QMainWindow(p) {
+      SwissWebWidget(QWidget* p=0): QWidget(p) {
         setupUi(this);
       }
     protected: