different tries to fix the crash, apparently removing tabs is creating this crash

pps_ws/src/d_fall_pps/GUI_Qt/CrazyFlyGUI/src/mainguiwindow.cpp

@@ -63,8 +63,13 @@ int MainGUIWindow::getTabIndexFromName(QString name)
 
 void MainGUIWindow::doNumCrazyFlyZonesChanged(int n)
 {
+    // FIXME: when we load CF Zones from database, more than one at a time. Change way of updating tabs!
+    // Maybe remove everything and create new ones always?
+
+
     // tabs number management, maybe do it in a different way so we dont have to remove and add everything?
     // first check if size of tabs is greater than size of vector or viceversa. Have we removed or added a zone?
+
     qDebug("tabWidgetCount : %d", ui->tabWidget->count());
     if(ui->tabWidget->count() > scene->crazyfly_zones.size())
     {
@@ -98,6 +103,77 @@ void MainGUIWindow::doNumCrazyFlyZonesChanged(int n)
         ui->tabWidget->insertTab(n, widget, qstr);
         connect(widget, SIGNAL(centerButtonClickedSignal(int)), this, SLOT(centerViewIndex(int)));
     }
+
+    // for(int ind = 0; ind < ui->tabWidget->count(); ind++)
+    // {
+    //     QString qstr = "CrazyFly ";
+    //     qstr.append(QString::number(ind+1));
+    //     int found_index = getTabIndexFromName(qstr);
+
+    //     if(found_index != -1)
+    //     {
+    //         ui->tabWidget->removeTab(found_index);
+    //     }
+
+    //     if(cf_linker->isCFZoneLinked(ind))
+    //     {
+    //         cf_linker->unlink_cf_zone(ind);
+    //     }
+    // }
+
+//     else
+//     {
+//         for(int i = 0; i < ui->tabWidget->count(); i++)
+//             {
+//                 int CF_index = scene->crazyfly_zones[i]->getIndex();
+//                 QString qstr = "CrazyFly ";
+//                 qstr.append(QString::number(CF_index + 1));
+
+//                 int found_index = getTabIndexFromName(qstr);
+//                 if(found_index != -1)
+//                 {
+//                     ui->tabWidget->removeTab(found_index);
+//                 }
+
+//                 //  now unlink it from table also:
+// #ifdef CATKIN_MAKE
+//                 if(cf_linker->isCFZoneLinked(n))
+//                 {
+//                     cf_linker->unlink_cf_zone(n);
+//                 }
+// #endif
+//                 // ROS_INFO("inside first for loop");
+
+//                 // ui->tabWidget->removeTab(i);
+//                 // ROS_INFO("removed tab");
+
+//                 // delete ui->tabWidget->widget(i);
+//                 // ROS_INFO("deleted widget");
+//             }
+//     }
+
+
+    // while(ui->tabWidget->count() > 0)
+    // {
+    //     ui->tabWidget->removeTab(0);
+    // }
+
+    // unlink all?
+    // cf_linker->clear_all_links();
+
+    // for(int i = 0; i < scene->crazyfly_zones.size(); i++)
+    // {
+    //     ROS_INFO("inside for loop");
+    //     QString qstr = "CrazyFly ";
+    //     int CF_index = scene->crazyfly_zones[i]->getIndex();
+    //     qstr.append(QString::number(CF_index + 1));
+    //     crazyFlyZoneTab* widget = new crazyFlyZoneTab(CF_index);
+    //     ui->tabWidget->insertTab(CF_index, widget, qstr);
+    //     // ui->tabWidget->addTab(widget, qstr);
+    //     ROS_INFO("Added tab");
+    //     connect(widget, SIGNAL(centerButtonClickedSignal(int)), this, SLOT(centerViewIndex(int)));
+    // }
+
     // for (int i = 0; i < n; i++)
     // {
     //     QString qstr = "CrazyFly ";
@@ -836,6 +912,7 @@ int MainGUIWindow::read_database_from_file(CrazyflieDB &read_db)
 void MainGUIWindow::on_load_from_DB_button_clicked()
 {
     CrazyflieDB tmp_db;
+
     if(read_database_from_file(tmp_db) == 0)
     {
 		ROS_INFO_STREAM("database:\n" << tmp_db);
@@ -853,6 +930,7 @@ void MainGUIWindow::on_load_from_DB_button_clicked()
             std::string cf_name = m_data_base.crazyflieEntries[i].crazyflieContext.crazyflieName;
             std::string radio_address = m_data_base.crazyflieEntries[i].crazyflieContext.crazyflieAddress;
             int cf_zone_index = m_data_base.crazyflieEntries[i].crazyflieContext.localArea.crazyfly_zone_index;
+
             // we should first create the cf zones that are in the database?
             bool cf_zone_exists;
             qreal width = m_data_base.crazyflieEntries[i].crazyflieContext.localArea.xmax - m_data_base.crazyflieEntries[i].crazyflieContext.localArea.xmin;

pps_ws/src/d_fall_pps/param/Crazyflie.db

-1,CF2,123,0,0.04,0.24,-0.2,1.14,1.81,2
+1,CF1,123,0,0.65,-0.22,-0.2,5.04,2.02,2
+2,CF2,1234,1,3.26,-2.78,-0.2,7.3,-1.65,2