Have MainWindow and others make use of the new SubWindow class

include/MainWindow.h

@@ -30,6 +30,8 @@
 #include <QtCore/QList>
 #include <QMainWindow>
 
+#include "SubWindow.h"
+
 class QAction;
 class QDomElement;
 class QGridLayout;
@@ -57,6 +59,9 @@ public:
 	int addWidgetToToolBar( QWidget * _w, int _row = -1, int _col = -1 );
 	void addSpacingToToolBar( int _size );
 
+	// wrap the widget with a window decoration and add it to the workspace
+	SubWindow* addWindowedWidget(QWidget *w, Qt::WindowFlags windowFlags=0);
+
 
 	///
 	/// \brief	Asks whether changes made to the project are to be saved.