ItemsWithParticles: add missing 'override'

GUI/Model/Sample/CompoundItem.h

@@ -26,8 +26,8 @@ class CompoundItem : public ItemWithParticles {
 public:
     CompoundItem(const MaterialModel* materials);
     void serialize(Streamer& s) override;
-    void writeTo(QXmlStreamWriter* w) const;
-    void readFrom(QXmlStreamReader* r);
+    void writeTo(QXmlStreamWriter* w) const override;
+    void readFrom(QXmlStreamReader* r) override;
 
     std::unique_ptr<Compound> createCompound() const;
 

GUI/Model/Sample/CoreAndShellItem.h

@@ -26,8 +26,8 @@ class CoreAndShellItem : public ItemWithParticles {
 public:
     CoreAndShellItem(const MaterialModel* materials);
     void serialize(Streamer& s) override;
-    void writeTo(QXmlStreamWriter* w) const;
-    void readFrom(QXmlStreamReader* r);
+    void writeTo(QXmlStreamWriter* w) const override;
+    void readFrom(QXmlStreamReader* r) override;
 
     std::unique_ptr<CoreAndShell> createCoreAndShell() const;
 

GUI/Model/Sample/MesocrystalItem.h

@@ -33,8 +33,8 @@ class MesocrystalItem : public ItemWithParticles {
 public:
     explicit MesocrystalItem(const MaterialModel* materials);
     void serialize(Streamer& s) override;
-    void writeTo(QXmlStreamWriter* w) const;
-    void readFrom(QXmlStreamReader* r);
+    void writeTo(QXmlStreamWriter* w) const override;
+    void readFrom(QXmlStreamReader* r) override;
 
     std::unique_ptr<Mesocrystal> createMesocrystal() const;
 

GUI/Model/Sample/ParticleItem.h

@@ -28,8 +28,8 @@ class ParticleItem : public ItemWithMaterial, public ItemWithParticles {
 public:
     ParticleItem(const MaterialModel* materials);
     void serialize(Streamer& s) override;
-    void writeTo(QXmlStreamWriter* w) const;
-    void readFrom(QXmlStreamReader* r);
+    void writeTo(QXmlStreamWriter* w) const override;
+    void readFrom(QXmlStreamReader* r) override;
 
     std::unique_ptr<Particle> createParticle() const;