Add confirmation box for deleting roi

src/view/qt/QtRoiWidget.cpp

@@ -20,6 +20,7 @@
 #include <QPushButton>
 #include <QLabel>
 #include <QHBoxLayout>
+#include <QMessageBox>
 #include <boost/lexical_cast.hpp>
 #include <iomanip>
 
@@ -206,9 +207,19 @@ void QtRoiWidget::validateRoi() {
  */
 void QtRoiWidget::deleteRoi() {
 	try {
-		DBGMSG("delete roi number : " << m_Id);
-		manager::InterfaceManager::getInstance()->deleteRoi(m_Id);
-		m_QtWindow->deleteRoi(m_Id);
+		QMessageBox msgBox;
+		msgBox.setText("Do you want to delete this ROI?");
+		msgBox.setStandardButtons(QMessageBox::Yes | QMessageBox::No);
+		msgBox.setDefaultButton(QMessageBox::No);
+		int ret = msgBox.exec();
+		if (ret == QMessageBox::Yes) {
+			DBGMSG("delete roi number : " << m_Id);
+			manager::InterfaceManager::getInstance()->deleteRoi(m_Id);
+			m_QtWindow->deleteRoi(m_Id);
+		}
+		else {
+			// do nothing
+		}
 	}
 	catch(...) {
 		Error("QtRoiWidget", "deleteRoi", "Error executing deleteRoi");