diff --git a/src/meshlab/glarea.cpp b/src/meshlab/glarea.cpp
index 176a5b23c..c92a1c446 100644
--- a/src/meshlab/glarea.cpp
+++ b/src/meshlab/glarea.cpp
@@ -369,7 +369,7 @@ void GLArea::paintEvent(QPaintEvent */*event*/)
 	} ///end if busy
 
 	glPopMatrix(); // We restore the state to immediately after the trackball (and before the bbox scaling/translating)
-
+	
 	if(trackBallVisible && !takeSnapTile && !(iEdit && !suspendedEditor))
 		trackball.DrawPostApply();
 
diff --git a/src/meshlab/mainwindow.h b/src/meshlab/mainwindow.h
index 89b3b987a..ffffcd0db 100644
--- a/src/meshlab/mainwindow.h
+++ b/src/meshlab/mainwindow.h
@@ -159,10 +159,6 @@ private slots:
   void viewFromCurrentRasterShot();
   void copyViewToClipBoard();
 	void pasteViewFromClipboard();
-	void filterUpdateRequest(const bool&,bool*);
-	void interruptFilterExecution();
-	void interruptButtonVisibility();
-	void showInterruptButton(const bool& visible);
 
 	///////////Slot PopUp Menu Handles /////////////////////
 	void splitFromHandle(QAction * qa);
@@ -217,7 +213,6 @@ private:
 	MeshlabStdDialog *stddialog;
 	MeshLabXMLStdDialog* xmldialog;
 	static QProgressBar *qb;
-	QPushButton* interruptbut;
 
 	QMdiArea *mdiarea;
 	LayerDialog *layerDialog;
diff --git a/src/meshlab/mainwindow_Init.cpp b/src/meshlab/mainwindow_Init.cpp
index 36b711f93..964e79d2c 100644
--- a/src/meshlab/mainwindow_Init.cpp
+++ b/src/meshlab/mainwindow_Init.cpp
@@ -61,7 +61,6 @@ MainWindow::MainWindow()
 	connect(mdiarea, SIGNAL(subWindowActivated(QMdiSubWindow *)),this, SLOT(updateStdDialog()));
 	connect(mdiarea, SIGNAL(subWindowActivated(QMdiSubWindow *)),this, SLOT(updateXMLStdDialog()));
 	connect(mdiarea, SIGNAL(subWindowActivated(QMdiSubWindow *)),this, SLOT(updateDocumentScriptBindings()));
-	connect(mdiarea, SIGNAL(subWindowActivated(QMdiSubWindow *)),this, SLOT(interruptButtonVisibility()));
 	httpReq=new QHttp(this);
 	//connect(httpReq, SIGNAL(requestFinished(int,bool)), this, SLOT(connectionFinished(int,bool)));
 	connect(httpReq, SIGNAL(done(bool)), this, SLOT(connectionDone(bool)));
@@ -87,12 +86,7 @@ MainWindow::MainWindow()
 	qb->setMaximum(100);
 	qb->setMinimum(0);
 	//qb->reset();
-	QCommonStyle st;
-	interruptbut = new QPushButton(st.standardIcon(QStyle::SP_MediaPause),"",this);
-	interruptbut->setVisible(false);
-	connect(interruptbut,SIGNAL(clicked()),this,SLOT(interruptFilterExecution()));
 	statusBar()->addPermanentWidget(qb,0);
-	statusBar()->addPermanentWidget(interruptbut,0);
 	updateMenus();
 	newProject();
 	//PM should be initialized before passing it to PluginGeneratorGUI
diff --git a/src/meshlab/mainwindow_RunTime.cpp b/src/meshlab/mainwindow_RunTime.cpp
index b0bb3973e..d531e8269 100644
--- a/src/meshlab/mainwindow_RunTime.cpp
+++ b/src/meshlab/mainwindow_RunTime.cpp
@@ -928,6 +928,8 @@ void MainWindow::startFilter()
 	from the automatic dialog
 	from the user defined dialog
 */
+
+
 void MainWindow::executeFilter(QAction *action, RichParameterSet &params, bool isPreview)
 {
 
@@ -1028,8 +1030,6 @@ void MainWindow::executeFilter(QAction *action, RichParameterSet &params, bool i
 
 }
 
-
-
 void MainWindow::executeFilter(MeshLabXMLFilterContainer* mfc, EnvWrap& env, bool /*isPreview*/)
 {
 	if (mfc == NULL)
@@ -1039,7 +1039,6 @@ void MainWindow::executeFilter(MeshLabXMLFilterContainer* mfc, EnvWrap& env, boo
 	bool filtercpp = (iFilter != NULL) && (!jscode);
 	QString fname = mfc->act->text();
 	QString ar = mfc->xmlInfo->filterAttribute(fname,MLXMLElNames::filterArity);
-	MeshDocument* mmmmd = meshDoc();
 	if (ar == MLXMLElNames::singleMeshArity)
 		meshDoc()->renderState().addMesh(meshDoc()->mm()->id(),meshDoc()->mm()->cm);
 
@@ -1146,6 +1145,7 @@ void MainWindow::executeFilter(MeshLabXMLFilterContainer* mfc, EnvWrap& env, boo
 			FilterThread* ft = new FilterThread(fname,&PM.stringXMLFilterMap[fname],*(meshDoc()),env,this);
 			connect(ft,SIGNAL(finished()),this,SLOT(postFilterExecution()));
 			connect(ft,SIGNAL(ThreadCB(const int, const QString&)),this,SLOT(updateProgressBar(const int,const QString&)));
+			connect(xmldialog,SIGNAL(filterInterrupt(const bool)),PM.stringXMLFilterMap[fname].filterInterface,SLOT(setInterrupt(const bool)));
 			ft->start();
 			//ret = iFilter->applyFilter(fname, *(meshDoc()), env, QCallBack);
 		}
@@ -1184,6 +1184,8 @@ void MainWindow::postFilterExecution()
 	MeshLabXMLFilterContainer* mfc = obj->_mfc;
 	if (mfc == NULL)
 		return;
+
+	mfc->filterInterface->setInterrupt(false);
 	
 	QString fname = mfc->act->text();
 	//meshDoc()->setBusy(false);
@@ -1248,46 +1250,6 @@ void MainWindow::postFilterExecution()
 	delete obj;
 }
 
-void MainWindow::filterUpdateRequest(const bool& redraw,bool* interrupted)
-{
-	GLArea* ar = GLA();
-	//if (ar != NULL && redraw)
-	//	ar->singleRedraw();
-	if (ar != NULL)
-		*interrupted = !(ar->showInterruptButton());
-}
-
-void MainWindow::interruptFilterExecution()
-{
-	GLArea* ar = GLA();
-	if (ar != NULL)
-	{
-		showInterruptButton(false);
-		if (meshDoc()->isBusy())
-			meshDoc()->setBusy(false);
-	}
-}
-
-void MainWindow::interruptButtonVisibility()
-{
-	GLArea* ar = GLA();
-	if (ar != NULL)
-		interruptbut->setVisible(ar->showInterruptButton());
-	else
-		interruptbut->setVisible(false);
-}
-
-void MainWindow::showInterruptButton(const bool& visible)
-{
-	GLArea* ar = GLA();
-	if (ar != NULL)
-	{
-		ar->showInterruptButton(visible);
-		interruptbut->setVisible(ar->showInterruptButton());
-	}
-	repaint();
-}
-
 void MainWindow::scriptCodeExecuted( const QScriptValue& val,const int time,const QString& output )
 {
 	if (val.isError())
diff --git a/src/meshlab/xmlstdpardialog.cpp b/src/meshlab/xmlstdpardialog.cpp
index ed2ae05d5..ce85ae106 100644
--- a/src/meshlab/xmlstdpardialog.cpp
+++ b/src/meshlab/xmlstdpardialog.cpp
@@ -3,7 +3,7 @@
 #include <QtGui>
 
 MeshLabXMLStdDialog::MeshLabXMLStdDialog(QWidget *p )
-:QDockWidget(QString("Plugin"), p),showHelp(false),env()
+:QDockWidget(QString("Plugin"), p),showHelp(false),env(),isfilterexecuting(false)
 {
 	curmask = 0;
 	qf = NULL;
@@ -59,17 +59,17 @@ void MeshLabXMLStdDialog::loadFrameContent( )
 
 	//int buttonRow = 2;  // the row where the line of buttons start
 
-	QPushButton *helpButton = new QPushButton("Help", qf);
+	helpButton = new QPushButton("Help", qf);
 	//helpButton->setSizePolicy(QSizePolicy::Preferred,QSizePolicy::Minimum);
-	QPushButton *closeButton = new QPushButton("Close", qf);
+	closeButton = new QPushButton("Close", qf);
 	//closeButton->setSizePolicy(QSizePolicy::Preferred,QSizePolicy::Minimum);
-	QPushButton *applyButton = new QPushButton("Apply", qf);
+	applyButton = new QPushButton("Apply", qf);
 	//applyButton->setSizePolicy(QSizePolicy::Preferred,QSizePolicy::Minimum);
-	QPushButton *defaultButton = new QPushButton("Default", qf);
+	defaultButton = new QPushButton("Default", qf);
 	//defaultButton->setSizePolicy(QSizePolicy::Preferred,QSizePolicy::Minimum);
 	ExpandButtonWidget* exp = new ExpandButtonWidget(qf);
 	connect(exp,SIGNAL(expandView(bool)),this,SLOT(extendedView(bool)));
-
+	connect(this->parentWidget(),SIGNAL(filterExecuted()),this,SLOT(postFilterExecution()));
 #ifdef Q_WS_MAC
 	// Hack needed on mac for correct sizes of button in the bottom of the dialog.
 	helpButton->setMinimumSize(100, 25);
@@ -89,6 +89,11 @@ void MeshLabXMLStdDialog::loadFrameContent( )
 		//buttonRow++;
 	}
 
+	connect(helpButton,SIGNAL(clicked()),this,SLOT(toggleHelp()));
+	connect(closeButton,SIGNAL(clicked()),this,SLOT(closeClick()));
+	connect(defaultButton,SIGNAL(clicked()),this,SLOT(resetExpressions()));
+	connect(applyButton,SIGNAL(clicked()),this,SLOT(applyClick()));
+
 	gridLayout->addWidget(exp,gridLayout->rowCount(),0,1,2,Qt::AlignJustify);
 	int firstButLine =  gridLayout->rowCount();
 	gridLayout->addWidget(helpButton,   firstButLine,1,Qt::AlignBottom);
@@ -98,11 +103,6 @@ void MeshLabXMLStdDialog::loadFrameContent( )
 	gridLayout->addWidget(applyButton,  secButLine,1,Qt::AlignBottom);
 
 
-	connect(helpButton,SIGNAL(clicked()),this,SLOT(toggleHelp()));
-	connect(applyButton,SIGNAL(clicked()),this,SLOT(applyClick()));
-	connect(closeButton,SIGNAL(clicked()),this,SLOT(closeClick()));
-	connect(defaultButton,SIGNAL(clicked()),this,SLOT(resetExpressions()));
-
 	qf->showNormal();
 	qf->adjustSize();
 
@@ -161,6 +161,12 @@ bool MeshLabXMLStdDialog::showAutoDialog(MeshLabXMLFilterContainer& mfc,PluginMa
 void MeshLabXMLStdDialog::applyClick()
 {
 	//env.pushContext();
+	if ((isfilterexecuting) && (curmfc->xmlInfo->filterAttribute(curmfc->act->text(),MLXMLElNames::filterIsInterruptible) == "true"))
+	{
+		emit filterInterrupt(true);
+		return;
+	}
+
 	assert(curParMap.size() == stdParFrame->xmlfieldwidgets.size());
 	for(int ii = 0;ii < curParMap.size();++ii)	
 	{
@@ -171,7 +177,6 @@ void MeshLabXMLStdDialog::applyClick()
 	////int mask = 0;//curParSet.getDynamicFloatMask();
 	if(curmask)	
 		meshState.apply(curModel);
-
 	//applyContext = env.currentContext()->toString();
 	////PreView Caching: if the apply parameters are the same to those used in the preview mode
 	////we don't need to reapply the filter to the mesh
@@ -182,6 +187,7 @@ void MeshLabXMLStdDialog::applyClick()
 	//{
 		QString nm = curmfc->act->text();
 		EnvWrap* wrap = new EnvWrap(env);
+		startFilterExecution();
 		curmwi->executeFilter(curmfc,*wrap,false);
 	/*}*/
 	//env.popContext();
@@ -303,6 +309,46 @@ void MeshLabXMLStdDialog::resetPointers()
 	curModel = NULL;
 }
 
+void MeshLabXMLStdDialog::postFilterExecution()
+{
+	setDialogStateRelativeToFilterExecution(false);
+}
+
+void MeshLabXMLStdDialog::startFilterExecution()
+{
+	setDialogStateRelativeToFilterExecution(true);
+}
+
+void MeshLabXMLStdDialog::setDialogStateRelativeToFilterExecution( const bool isfilterinexecution )
+{
+	isfilterexecuting = isfilterinexecution;
+	if (curmfc == NULL)
+		return;
+	QString inter = curmfc->xmlInfo->filterAttribute(curmfc->act->text(),MLXMLElNames::filterIsInterruptible);
+
+	if (inter == "true")
+	{
+		applyButton->setEnabled(true);
+		//during filter execution Stop label should appear, otherwise the apply button is in the usual apply state 
+		applyButton->setText(MeshLabXMLStdDialog::applyButtonLabel(!isfilterinexecution));
+	}
+	else
+	{
+		applyButton->setText(MeshLabXMLStdDialog::applyButtonLabel(true));
+		applyButton->setEnabled(!isfilterexecuting);
+	}
+	stdParFrame->setEnabled(!isfilterexecuting);
+}
+
+QString MeshLabXMLStdDialog::applyButtonLabel( const bool applystate )
+{
+	if (applystate) 
+		return QString("Apply"); 
+	else 
+		return QString("Stop"); 
+	return QString();
+}
+
 XMLStdParFrame::XMLStdParFrame( QWidget *p,QWidget *gla/*=0*/ )
 :QFrame(p),extended(false)
 {
diff --git a/src/meshlab/xmlstdpardialog.h b/src/meshlab/xmlstdpardialog.h
index 53ee4f107..c27c5cff5 100644
--- a/src/meshlab/xmlstdpardialog.h
+++ b/src/meshlab/xmlstdpardialog.h
@@ -449,7 +449,6 @@ public:
 	void closeEvent ( QCloseEvent * event ); 
 	void resetPointers();
 	MeshModel *curModel;
-//signals:
 	//void dialogEvaluateExpression(const Expression& exp,Value** res);
 	//void expandView(bool exp);
 
@@ -463,8 +462,14 @@ private slots:
 	void applyDynamic();
 	void changeCurrentMesh(int meshInd);
 	void extendedView(bool ext);
+	void postFilterExecution();
 
 private:
+	void startFilterExecution();
+	void setDialogStateRelativeToFilterExecution(const bool isfilterinexecution);
+	static QString applyButtonLabel(const bool applystate);
+	bool isfilterexecuting;
+
 	Env env;
 	QFrame *qf;
 	XMLStdParFrame *stdParFrame;
@@ -482,6 +487,15 @@ private:
 	QString previewContext;
 	bool validcache;
 	bool showHelp;
+
+	//we have to change the button caption when the filter has been launched for execution
+	QPushButton *applyButton;
+	QPushButton *helpButton;
+	QPushButton *closeButton;
+	QPushButton *defaultButton;
+
+signals:
+	void filterInterrupt(const bool isinterruptrequested);
 };
 
 #endif