fix: fix: Switching to a new device without stopping the current device

DSView/pv/mainwindow.cpp

@@ -1518,6 +1518,10 @@ namespace pv
             {
                 dsv_info("The data save confirm end, auto switch to the new device.");
                 _is_auto_switch_device = false;
+
+                if (_session->is_working())
+                    _session->stop_capture();
+
                 _session->set_default_device();
             }
         }
@@ -1855,10 +1859,17 @@ namespace pv
                 if (confirm_to_store_data())
                 {
                     _is_auto_switch_device = true;
+
+                    if (_session->is_working())
+                        _session->stop_capture();
+
                     on_save();
                 }
                 else
-                {
+                {   
+                    if (_session->is_working())
+                        _session->stop_capture();
+                    
                     _session->set_default_device();
                 }
             }           

DSView/pv/sigsession.cpp

@@ -177,7 +177,7 @@ namespace pv
         assert(!_is_saving);
         
         if (_is_working){
-            dsv_info("The current device is working, now to stop it.");
+            dsv_info("SigSession::set_default_device()，The current device is working, now to stop it.");
             dsv_info("SigSession::set_default_device(), stop capture");
             stop_capture();
         }

DSView/pv/view/header.cpp

@@ -201,7 +201,7 @@ void Header::mousePressEvent(QMouseEvent *event)
 
         for(auto t : traces){
             if (t->signal_type() == LOGIC_SIGNAL && _view.session().is_working()){
-                // Disable to set trigger when capturing.
+                // Disable set trigger from left pannel when capturing.
                 break;
             }
             if (t->mouse_press(width(), event->pos()))