diff --git a/D/DQml/CMakeLists.txt b/D/DQml/CMakeLists.txt
index cdee26a..1af989d 100644
--- a/D/DQml/CMakeLists.txt
+++ b/D/DQml/CMakeLists.txt
@@ -8,7 +8,6 @@ add_library(${PROJECT_NAME} STATIC
   qquickview.d
   qqmlapplicationengine.d
   qqmlcontext.d
-  chararray.d
   qguiapplication.d
   qapplication.d
   qmodelindex.d
diff --git a/D/DQml/chararray.d b/D/DQml/chararray.d
deleted file mode 100644
index fb052b8..0000000
--- a/D/DQml/chararray.d
+++ /dev/null
@@ -1,56 +0,0 @@
-import dothersideinterface;
-import std.string;
-
-class CharArray
-{  
-  this()
-  {
-    _size = 0;
-    dos_chararray_create(_data, _size);
-  }
-  
-  this(int size)
-  {
-    _size = size;
-    dos_chararray_create(_data, _size);
-  }
-  
-  this(char* data, int size)
-  {
-    _data = data;
-    _size = size;
-  }
-  
-  ~this()
-  {
-    dos_chararray_delete(_data);
-  }
-  
-  char* data()
-  {
-    return _data;
-  }
-  
-  int size()
-  {
-    return _size;
-  }
-  
-  ref char* dataRef()
-  {
-    return _data;
-  }
-  
-  ref int sizeRef()
-  {
-    return _size;
-  }
-
-  override string toString()
-  {
-    return fromStringz(_data).dup;
-  }
-
-  private char* _data;
-  private int _size;
-}
diff --git a/D/DQml/dothersideinterface.di b/D/DQml/dothersideinterface.di
index 17ac6d7..77fd484 100644
--- a/D/DQml/dothersideinterface.di
+++ b/D/DQml/dothersideinterface.di
@@ -21,18 +21,16 @@ extern(C)
   // QQuickView
   void dos_qquickview_create(ref void*);
   void dos_qquickview_show(void*);
-  void dos_qquickview_source(void*, ref char *, ref int);
+  void dos_qquickview_source(void*, ref char *);
   void dos_qquickview_set_source(void*, immutable (char)* filename);
   void dos_qquickview_rootContext(void*, ref void*);
   void dos_qquickview_delete(void*);
 
   // CharArray
-  void dos_chararray_create(ref char*);
-  void dos_chararray_create(ref char*, int size);
   void dos_chararray_delete(char*);
 
   // QQmlContext
-  void dos_qqmlcontext_baseUrl(void*, ref char*, ref int);
+  void dos_qqmlcontext_baseUrl(void*, ref char*);
   void dos_qqmlcontext_setcontextproperty(void*, immutable (char)*, void*);
 
   // QVariant
@@ -47,7 +45,7 @@ extern(C)
   void dos_qvariant_setInt(void*, int);
   void dos_qvariant_toBool(void*, ref bool);
   void dos_qvariant_setBool(void*, bool);
-  void dos_qvariant_toString(void*, ref char*, ref int);
+  void dos_qvariant_toString(void*, ref char*);
   void dos_qvariant_setString(void*, immutable(char)*);
   void dos_qvariant_toFloat(void*, ref float);
   void dos_qvariant_setFloat(void*, float);
@@ -60,8 +58,8 @@ extern(C)
 
   // QObject
   void dos_qobject_create(ref void*,
-			  void* dobject,
-			  void function (void*, void*, int , void**));
+                          void* dobject,
+			              void function (void*, void*, int , void**));
 
   void dos_qobject_slot_create(void*,
 			       immutable (char)* name,
diff --git a/D/DQml/main.d b/D/DQml/main.d
deleted file mode 100644
index 2b4b769..0000000
--- a/D/DQml/main.d
+++ /dev/null
@@ -1,67 +0,0 @@
-import std.stdio;
-import std.string;
-import std.traits;
-import std.conv;
-import std.functional;
-import core.memory;
-import dotherside;
-
-class MyObject : QObject 
-{
-  this()
-  {
-    foo = registerSlot("foo", &_foo);
-    bar = registerSlot("bar", &_bar);
-    nameChanged = registerSignal!(string)("nameChanged");
-    tor = registerSlot("tor", &_tor);
-  }
-  
-  public QSlot!(void delegate(int)) foo;
-  private void _foo(int fooValue)
-  {
-    writeln("D: Called foo slot with argument ", fooValue , "!!");
-  }
-  
-  public QSlot!(int delegate(int)) bar;
-  private int _bar(int barValue)
-  {
-    writeln("D: Called bar slot with argument " , barValue, "!!");
-    return 666;
-  }
-
-  public QSlot!(string delegate(string)) tor;
-  private string _tor (string torValue)
-  {
-    writeln("D: Called tor slot with argument ", torValue, "!!");
-    return "2343";
-  }
-
-  public QSignal!(string) nameChanged;
-}
-
-void main()
-{
-  try
-  {
-    auto app = new QGuiApplication;
-    scope(exit) destroy(app);
-
-    auto view = new QQuickView;
-    scope(exit) destroy(view);
-    
-    auto myObject = new MyObject();
-    scope(exit) destroy(myObject);
-    
-    auto context = view.rootContext();
-    context.setContextProperty("myObject", new QVariant(myObject));
-    
-    view.setSource("Test.qml");
-    view.show();
-
-    myObject.nameChanged("prova");
-
-    app.exec();
-  }
-  catch 
-  {}
-}
diff --git a/D/DQml/qapplication.d b/D/DQml/qapplication.d
index 4c73221..b43e1b2 100644
--- a/D/DQml/qapplication.d
+++ b/D/DQml/qapplication.d
@@ -2,23 +2,23 @@ import dothersideinterface;
 
 class QApplication
 { 
-  this()
-  {
-    dos_qapplication_create();
-  }
+    this()
+    {
+        dos_qapplication_create();
+    }
   
-  ~this()
-  {
-    dos_qapplication_delete();
-  }
+    ~this()
+    {
+        dos_qapplication_delete();
+    }
   
-  void exec()
-  {
-    dos_qapplication_exec();
-  }
+    void exec()
+    {
+        dos_qapplication_exec();
+    }
 
-  void quit()
-  {
-    dos_qapplication_quit();
-  }
+    void quit()
+    {
+        dos_qapplication_quit();
+    }
 }
diff --git a/D/DQml/qguiapplication.d b/D/DQml/qguiapplication.d
index 4dbc8e6..9623f7e 100644
--- a/D/DQml/qguiapplication.d
+++ b/D/DQml/qguiapplication.d
@@ -2,23 +2,23 @@ import dothersideinterface;
 
 class QGuiApplication
 { 
-  this()
-  {
-    dos_qguiapplication_create();
-  }
+    this()
+    {
+        dos_qguiapplication_create();
+    }
   
-  ~this()
-  {
-    dos_qguiapplication_delete();
-  }
+    ~this()
+    {
+        dos_qguiapplication_delete();
+    }
   
-  void exec()
-  {
-    dos_qguiapplication_exec();
-  }
+    void exec()
+    {
+        dos_qguiapplication_exec();
+    }
 
-  void quit()
-  {
-    dos_qguiapplication_quit();
-  }
+    void quit()
+    {
+        dos_qguiapplication_quit();
+    }
 }
diff --git a/D/DQml/qmetatype.d b/D/DQml/qmetatype.d
index 2e62b80..356e828 100644
--- a/D/DQml/qmetatype.d
+++ b/D/DQml/qmetatype.d
@@ -2,66 +2,66 @@ import qobject;
 import qvariant;
 
 /*
-enum Type {
-        UnknownType = 0, Bool = 1, Int = 2, UInt = 3, LongLong = 4, ULongLong = 5,
-        Double = 6, Long = 32, Short = 33, Char = 34, ULong = 35, UShort = 36,
-        UChar = 37, Float = 38,
-        VoidStar = 31,
-        QChar = 7, QString = 10, QStringList = 11, QByteArray = 12,
-        QBitArray = 13, QDate = 14, QTime = 15, QDateTime = 16, QUrl = 17,
-        QLocale = 18, QRect = 19, QRectF = 20, QSize = 21, QSizeF = 22,
-        QLine = 23, QLineF = 24, QPoint = 25, QPointF = 26, QRegExp = 27,
-        QEasingCurve = 29, QUuid = 30, QVariant = 41, QModelIndex = 42,
-        QRegularExpression = 44,
-        QJsonValue = 45, QJsonObject = 46, QJsonArray = 47, QJsonDocument = 48,
-        QObjectStar = 39, SChar = 40,
-        Void = 43,
-        QVariantMap = 8, QVariantList = 9, QVariantHash = 28,
-        QFont = 64, QPixmap = 65, QBrush = 66, QColor = 67, QPalette = 68,
-        QIcon = 69, QImage = 70, QPolygon = 71, QRegion = 72, QBitmap = 73,
-        QCursor = 74, QKeySequence = 75, QPen = 76, QTextLength = 77, QTextFormat = 78,
-        QMatrix = 79, QTransform = 80, QMatrix4x4 = 81, QVector2D = 82,
-        QVector3D = 83, QVector4D = 84, QQuaternion = 85, QPolygonF = 86,
-        QSizePolicy = 121,
-        User = 1024
-    };
+  enum Type {
+  UnknownType = 0, Bool = 1, Int = 2, UInt = 3, LongLong = 4, ULongLong = 5,
+  Double = 6, Long = 32, Short = 33, Char = 34, ULong = 35, UShort = 36,
+  UChar = 37, Float = 38,
+  VoidStar = 31,
+  QChar = 7, QString = 10, QStringList = 11, QByteArray = 12,
+  QBitArray = 13, QDate = 14, QTime = 15, QDateTime = 16, QUrl = 17,
+  QLocale = 18, QRect = 19, QRectF = 20, QSize = 21, QSizeF = 22,
+  QLine = 23, QLineF = 24, QPoint = 25, QPointF = 26, QRegExp = 27,
+  QEasingCurve = 29, QUuid = 30, QVariant = 41, QModelIndex = 42,
+  QRegularExpression = 44,
+  QJsonValue = 45, QJsonObject = 46, QJsonArray = 47, QJsonDocument = 48,
+  QObjectStar = 39, SChar = 40,
+  Void = 43,
+  QVariantMap = 8, QVariantList = 9, QVariantHash = 28,
+  QFont = 64, QPixmap = 65, QBrush = 66, QColor = 67, QPalette = 68,
+  QIcon = 69, QImage = 70, QPolygon = 71, QRegion = 72, QBitmap = 73,
+  QCursor = 74, QKeySequence = 75, QPen = 76, QTextLength = 77, QTextFormat = 78,
+  QMatrix = 79, QTransform = 80, QMatrix4x4 = 81, QVector2D = 82,
+  QVector3D = 83, QVector4D = 84, QQuaternion = 85, QPolygonF = 86,
+  QSizePolicy = 121,
+  User = 1024
+  };
 */
 
 public enum QMetaType
 {
-  Unknown = 0,
-  Bool = 1,
-  Int = 2,
-  String = 10,
-  VoidStr = 31,
-  QObject = 39,
-  QVariant = 41,
-  Void = 43
+    Unknown = 0,
+    Bool = 1,
+    Int = 2,
+    String = 10,
+    VoidStr = 31,
+    QObject = 39,
+    QVariant = 41,
+    Void = 43
 }
 
 public QMetaType GetMetaType(T)() 
-  if (is (T == int)
-    || is (T == bool)
-    || is (T == string)
-    || is (T == void)
-    || is (T == QObject)
-    || is (T == QVariant)
-    || is (T == void*))
-{
-  static if (is (T == bool))
-    return QMetaType.Bool;
-  else if (is (T == int))
-    return QMetaType.Int;
-  else if (is( T == void))
-    return QMetaType.Void;
-  else if (is (T == string))
-    return QMetaType.String;
-  else if (is (T == QObject))
-    return QMetaType.QObject;
-  else if (is (T == QVariant))
-    return QMetaType.QVariant;
-  else if (is (T == void*))
-    return QMetaType.VoidStar;
-  else
-    return QMetaType.Unknown;
-}
+    if (is (T == int)
+        || is (T == bool)
+        || is (T == string)
+        || is (T == void)
+        || is (T == QObject)
+        || is (T == QVariant)
+        || is (T == void*))
+    {
+        static if (is (T == bool))
+            return QMetaType.Bool;
+        else if (is (T == int))
+            return QMetaType.Int;
+        else if (is( T == void))
+            return QMetaType.Void;
+        else if (is (T == string))
+            return QMetaType.String;
+        else if (is (T == QObject))
+            return QMetaType.QObject;
+        else if (is (T == QVariant))
+            return QMetaType.QVariant;
+        else if (is (T == void*))
+            return QMetaType.VoidStar;
+        else
+            return QMetaType.Unknown;
+    }
diff --git a/D/DQml/qobject.d b/D/DQml/qobject.d
index 98d878d..4550949 100644
--- a/D/DQml/qobject.d
+++ b/D/DQml/qobject.d
@@ -11,101 +11,101 @@ import qvariant;
 
 public class QObject
 {
-  this()
-  {
-    dos_qobject_create(this.data, cast (void*) this, &staticSlotCallback);
-  }
-
-  ~this()
-  {
-    dos_qobject_delete(this.data);
-  }
-
-  public void* rawData()
-  {
-      return this.data;
-  }
-
-  private extern (C) static void staticSlotCallback(void* qObjectPtr,
-						    void* rawSlotName,
-						    int numParameters,
-						    void** parametersArray)
-  {
-    QVariant[] parameters = new QVariant[numParameters];
-    for (int i = 0; i < numParameters; ++i)
-      parameters[i] = new QVariant(parametersArray[i]);
-    QObject qObject = cast(QObject) qObjectPtr;
-    QVariant slotName = new QVariant(rawSlotName);
-    qObject.onSlotCalled(slotName, parameters);
-  }
-
-  protected void onSlotCalled(QVariant slotName, QVariant[] parameters)
-  {
-  }
-
-  protected void registerSlot(string name, QMetaType[] types)
-  {
-    int index = -1;
-    int  length = cast(int)types.length;
-    int[] array = to!(int[])(types);
-    dos_qobject_slot_create(this.data,
-			    name.toStringz(),
-			    length,
-			    array.ptr,
-			    index);
-  }
-
-  protected void registerSignal(string name, QMetaType[] types)
-  {
-    int index = -1;
-    int length = cast(int)types.length;
-    int[] array = length > 0 ? to!(int[])(types) : null;
-    dos_qobject_signal_create(this.data,
-			      name.toStringz(),
-			      length,
-			      array.ptr,
-			      index);
-  }
-
-  protected void registerProperty(string name,
-			QMetaType type,
-			string readSlotName,
-			string writeSlotName,
-			string notifySignalName)
-  {
-    dos_qobject_property_create(this.data,
-				name.toStringz(),
-				type,
-				readSlotName.toStringz(),
-				writeSlotName.toStringz(),
-				notifySignalName.toStringz());
-  }
-
-  protected void emit(T)(string signalName, T t)
-  {
-    emit(signalName, new QVariant(t));
-  }
-  
-  protected void emit(string signalName, QVariant value)
-  {
-    QVariant[] array = [value];
-    emit(signalName, array);
-  }
-
-  protected void emit(string signalName, QVariant[] arguments = null)
-  {
-    int length = cast(int)arguments.length;
-    void*[] array = null;
-    if (length > 0) {
-      array = new void*[length];
-      foreach (int i, QVariant v; arguments)
-	array[i] = v.rawData();
+    this()
+    {
+        dos_qobject_create(this.data, cast (void*) this, &staticSlotCallback);
     }
-    dos_qobject_signal_emit(this.data,
-			    signalName.toStringz(),
-			    length,
-			    array.ptr);
-  }
 
-  private void* data;
+    ~this()
+    {
+        dos_qobject_delete(this.data);
+    }
+
+    public void* rawData()
+    {
+        return this.data;
+    }
+
+    private extern (C) static void staticSlotCallback(void* qObjectPtr,
+                                                      void* rawSlotName,
+                                                      int numParameters,
+                                                      void** parametersArray)
+    {
+        QVariant[] parameters = new QVariant[numParameters];
+        for (int i = 0; i < numParameters; ++i)
+            parameters[i] = new QVariant(parametersArray[i]);
+        QObject qObject = cast(QObject) qObjectPtr;
+        QVariant slotName = new QVariant(rawSlotName);
+        qObject.onSlotCalled(slotName, parameters);
+    }
+
+    protected void onSlotCalled(QVariant slotName, QVariant[] parameters)
+    {
+    }
+
+    protected void registerSlot(string name, QMetaType[] types)
+    {
+        int index = -1;
+        int  length = cast(int)types.length;
+        int[] array = to!(int[])(types);
+        dos_qobject_slot_create(this.data,
+                                name.toStringz(),
+                                length,
+                                array.ptr,
+                                index);
+    }
+
+    protected void registerSignal(string name, QMetaType[] types)
+    {
+        int index = -1;
+        int length = cast(int)types.length;
+        int[] array = length > 0 ? to!(int[])(types) : null;
+        dos_qobject_signal_create(this.data,
+                                  name.toStringz(),
+                                  length,
+                                  array.ptr,
+                                  index);
+    }
+
+    protected void registerProperty(string name,
+                                    QMetaType type,
+                                    string readSlotName,
+                                    string writeSlotName,
+                                    string notifySignalName)
+    {
+        dos_qobject_property_create(this.data,
+                                    name.toStringz(),
+                                    type,
+                                    readSlotName.toStringz(),
+                                    writeSlotName.toStringz(),
+                                    notifySignalName.toStringz());
+    }
+
+    protected void emit(T)(string signalName, T t)
+    {
+        emit(signalName, new QVariant(t));
+    }
+  
+    protected void emit(string signalName, QVariant value)
+    {
+        QVariant[] array = [value];
+        emit(signalName, array);
+    }
+
+    protected void emit(string signalName, QVariant[] arguments = null)
+    {
+        int length = cast(int)arguments.length;
+        void*[] array = null;
+        if (length > 0) {
+            array = new void*[length];
+            foreach (int i, QVariant v; arguments)
+                array[i] = v.rawData();
+        }
+        dos_qobject_signal_emit(this.data,
+                                signalName.toStringz(),
+                                length,
+                                array.ptr);
+    }
+
+    private void* data;
 }
diff --git a/D/DQml/qqmlapplicationengine.d b/D/DQml/qqmlapplicationengine.d
index f315b3b..4015108 100644
--- a/D/DQml/qqmlapplicationengine.d
+++ b/D/DQml/qqmlapplicationengine.d
@@ -4,27 +4,27 @@ import std.string;
 
 class QQmlApplicationEngine
 {
-  public this()
-  {
-    dos_qqmlapplicationengine_create(data);
-  }
+    public this()
+    {
+        dos_qqmlapplicationengine_create(data);
+    }
   
-  public ~this()
-  {
-    dos_qqmlapplicationengine_delete(data);
-  }
+    public ~this()
+    {
+        dos_qqmlapplicationengine_delete(data);
+    }
 
-  public QQmlContext rootContext()
-  {
-    void* contextData;
-    dos_qqmlapplicationengine_context(data, contextData);
-    return new QQmlContext(contextData);
-  }
+    public QQmlContext rootContext()
+    {
+        void* contextData;
+        dos_qqmlapplicationengine_context(data, contextData);
+        return new QQmlContext(contextData);
+    }
   
-  public void load(string filename)
-  {
-    dos_qqmlapplicationengine_load(data, filename.toStringz());
-  }
+    public void load(string filename)
+    {
+        dos_qqmlapplicationengine_load(data, filename.toStringz());
+    }
   
-  private void* data;
+    private void* data;
 }
diff --git a/D/DQml/qqmlcontext.d b/D/DQml/qqmlcontext.d
index 05bdfca..15763d5 100644
--- a/D/DQml/qqmlcontext.d
+++ b/D/DQml/qqmlcontext.d
@@ -1,31 +1,32 @@
 import dothersideinterface;
 import qvariant;
-import chararray;
+import std.string;
 
 class QQmlContext
 {
-  public this(void* data)
-  {
-    this.data = data;
-  }
+    public this(void* data)
+    {
+        this.data = data;
+    }
 
-  public void* rawData()
-  {
-    return data;
-  }
+    public void* rawData()
+    {
+        return data;
+    }
 
-  public string baseUrl()
-  {
-    auto array = new CharArray();
-    scope(exit) destroy(array);
-    dos_qqmlcontext_baseUrl(data, array.dataRef(), array.sizeRef());
-    return array.toString();
-  }
+    public string baseUrl()
+    {
+        char* array;
+        dos_qqmlcontext_baseUrl(data, array);
+        string result = fromStringz(array).dup;
+        dos_chararray_delete(array);
+        return result;
+    }
   
-  public void setContextProperty(string name, QVariant value)
-  {
-    dos_qqmlcontext_setcontextproperty(data, name.ptr, value.rawData());
-  }
+    public void setContextProperty(string name, QVariant value)
+    {
+        dos_qqmlcontext_setcontextproperty(data, name.ptr, value.rawData());
+    }
 
-  private void* data;
+    private void* data;
 }
diff --git a/D/DQml/qquickview.d b/D/DQml/qquickview.d
index bf3a0e2..c5f0b34 100644
--- a/D/DQml/qquickview.d
+++ b/D/DQml/qquickview.d
@@ -1,45 +1,45 @@
 import dothersideinterface;
 import qqmlcontext;
-import chararray;
 import std.string;
 
 class QQuickView
 { 
-  this()
-  {
-    dos_qquickview_create(data);
-  }
+    this()
+    {
+        dos_qquickview_create(data);
+    }
   
-  ~this()
-  {
-    dos_qquickview_delete(data);
-  }
+    ~this()
+    {
+        dos_qquickview_delete(data);
+    }
   
-  void show()
-  {
-    dos_qquickview_show(data);
-  }
+    void show()
+    {
+        dos_qquickview_show(data);
+    }
   
-  QQmlContext rootContext()
-  {
-    void* contextData;
-    dos_qquickview_rootContext(data, contextData);
-    return new QQmlContext(contextData);
-  }
+    QQmlContext rootContext()
+    {
+        void* contextData;
+        dos_qquickview_rootContext(data, contextData);
+        return new QQmlContext(contextData);
+    }
   
-  string source()
-  {
-    auto array = new CharArray();
-    scope(exit) destroy(array);
-    dos_qquickview_source(data, array.dataRef(), array.sizeRef());
-    return array.toString();
-  }
+    string source()
+    {
+        char* array;
+        dos_qquickview_source(data, array);
+        string result = fromStringz(array).dup;
+        dos_chararray_delete(array);
+        return result;
+    }
   
-  void setSource(string filename)
-  {
-    immutable(char)* filenameAsCString = filename.toStringz();
-    dos_qquickview_set_source(data, filenameAsCString);
-  }
+    void setSource(string filename)
+    {
+        immutable(char)* filenameAsCString = filename.toStringz();
+        dos_qquickview_set_source(data, filenameAsCString);
+    }
 
-  private void* data;
+    private void* data;
 }
diff --git a/D/DQml/qvariant.d b/D/DQml/qvariant.d
index fac1f2d..bf44eba 100644
--- a/D/DQml/qvariant.d
+++ b/D/DQml/qvariant.d
@@ -1,160 +1,160 @@
 import dothersideinterface;
 import qobject;
 import std.string;
-import chararray;
 
 class QVariant
 {
-  public this()
-  {
-    dos_qvariant_create(this.data);
-  }
+    public this()
+    {
+        dos_qvariant_create(this.data);
+    }
   
-  public this(int value)
-  {
-    dos_qvariant_create_int(this.data, value);
-  }
+    public this(int value)
+    {
+        dos_qvariant_create_int(this.data, value);
+    }
   
-  public this(bool value)
-  {
-    dos_qvariant_create_bool(this.data, value);
-  }
+    public this(bool value)
+    {
+        dos_qvariant_create_bool(this.data, value);
+    }
   
-  public this(string value)
-  {
-    dos_qvariant_create_string(this.data, value.toStringz());
-  }
+    public this(string value)
+    {
+        dos_qvariant_create_string(this.data, value.toStringz());
+    }
 
-  public this(float value)
-  {
-    dos_qvariant_create_float(this.data, value);
-  }
+    public this(float value)
+    {
+        dos_qvariant_create_float(this.data, value);
+    }
     
-  public this(double value)
-  {
-    dos_qvariant_create_double(this.data, value);
-  }
+    public this(double value)
+    {
+        dos_qvariant_create_double(this.data, value);
+    }
 
-  public this(QObject value)
-  {
-    dos_qvariant_create_qobject(this.data, value.rawData());
-  }
+    public this(QObject value)
+    {
+        dos_qvariant_create_qobject(this.data, value.rawData());
+    }
 
-  public this(void* data, bool hasOwnership = false)
-  {
-    this.data = data;
-    this.hasOwnership = hasOwnership;
-  }
+    public this(void* data, bool hasOwnership = false)
+    {
+        this.data = data;
+        this.hasOwnership = hasOwnership;
+    }
 
-  ~this()
-  {
-    if (this.hasOwnership)
-      dos_qvariant_delete(this.data);
-  }
+    ~this()
+    {
+        if (this.hasOwnership)
+            dos_qvariant_delete(this.data);
+    }
 
-  public void* rawData()
-  {
-    return data;
-  }
+    public void* rawData()
+    {
+        return data;
+    }
 
-  public void setValue(int value)
-  {
-    dos_qvariant_setInt(this.data, value);
-  }
+    public void setValue(int value)
+    {
+        dos_qvariant_setInt(this.data, value);
+    }
 
-  public void setValue(bool value)
-  {
-    dos_qvariant_setBool(this.data, value);
-  }
+    public void setValue(bool value)
+    {
+        dos_qvariant_setBool(this.data, value);
+    }
 
-  public void setValue(string value)
-  {
-    dos_qvariant_setString(this.data, value.toStringz());
-  }
+    public void setValue(string value)
+    {
+        dos_qvariant_setString(this.data, value.toStringz());
+    }
   
-  public void setValue(QObject value)
-  {
-    dos_qvariant_setQObject(this.data, value.rawData());
-  }
+    public void setValue(QObject value)
+    {
+        dos_qvariant_setQObject(this.data, value.rawData());
+    }
 
-  public void setValue(float value)
-  {
-    dos_qvariant_setFloat(this.data, value);
-  }
+    public void setValue(float value)
+    {
+        dos_qvariant_setFloat(this.data, value);
+    }
 
-  public void setValue(double value)
-  {
-    dos_qvariant_setDouble(this.data, value);
-  }
+    public void setValue(double value)
+    {
+        dos_qvariant_setDouble(this.data, value);
+    }
 
-  public void getValue(ref int value)
-  {
-    value = toInt();
-  }
+    public void getValue(ref int value)
+    {
+        value = toInt();
+    }
 
-  public void getValue(ref bool value)
-  {
-    value = toBool();
-  }
+    public void getValue(ref bool value)
+    {
+        value = toBool();
+    }
 
-  public void getValue(ref string value)
-  {
-    value = toString();
-  }
+    public void getValue(ref string value)
+    {
+        value = toString();
+    }
 
-  public void getValue(ref float value)
-  {
-    value = toFloat();
-  }
+    public void getValue(ref float value)
+    {
+        value = toFloat();
+    }
   
-  public void getValue(ref double value)
-  {
-    value = toDouble();
-  }
+    public void getValue(ref double value)
+    {
+        value = toDouble();
+    }
 
-  public  bool isNull()
-  {
-    bool result;
-    dos_qvariant_isnull(this.data, result);
-    return result;
-  }
+    public  bool isNull()
+    {
+        bool result;
+        dos_qvariant_isnull(this.data, result);
+        return result;
+    }
   
-  public  bool toBool()
-  {
-    bool result;
-    dos_qvariant_toBool(this.data, result);
-    return result;
-  }
+    public  bool toBool()
+    {
+        bool result;
+        dos_qvariant_toBool(this.data, result);
+        return result;
+    }
   
-  public int toInt()
-  {
-    int result;
-    dos_qvariant_toInt(this.data, result);
-    return result;
-  }
+    public int toInt()
+    {
+        int result;
+        dos_qvariant_toInt(this.data, result);
+        return result;
+    }
 
-  public float toFloat()
-  {
-    float result;
-    dos_qvariant_toFloat(this.data, result);
-    return result;
-  }
+    public float toFloat()
+    {
+        float result;
+        dos_qvariant_toFloat(this.data, result);
+        return result;
+    }
 
-  public double toDouble()
-  {
-    double result;
-    dos_qvariant_toDouble(this.data, result);
-    return result;
-  }
+    public double toDouble()
+    {
+        double result;
+        dos_qvariant_toDouble(this.data, result);
+        return result;
+    }
   
-  public override string toString()
-  {
-    auto result = new CharArray();
-    scope(exit) destroy(result);
-    dos_qvariant_toString(this.data, result.dataRef(), result.sizeRef());
-    return result.toString();
-  }
+    public override string toString()
+    {
+        char* array;
+        dos_qvariant_toString(this.data, array);
+        string result = fromStringz(array).dup;
+        dos_chararray_delete(array);
+        return result;
+    }
 
-  private void* data = null;
-  private bool hasOwnership = true;
+    private void* data = null;
+    private bool hasOwnership = true;
 }
diff --git a/DOtherSide/DOtherSide/DOtherSide.cpp b/DOtherSide/DOtherSide/DOtherSide.cpp
index abde915..459bf32 100644
--- a/DOtherSide/DOtherSide/DOtherSide.cpp
+++ b/DOtherSide/DOtherSide/DOtherSide.cpp
@@ -16,11 +16,10 @@
 #include "BaseQAbstractListModel.h"
 #include "BaseQObject.h"
 
-void convert_to_cstring(const QString& source, char** destination, int* length)
+void convert_to_cstring(const QString& source, char** destination)
 {
     QByteArray array = source.toUtf8();
     *destination = qstrdup(array.data());
-    *length = qstrlen(array.data());
 }
 
 void dos_qguiapplication_create()
@@ -110,11 +109,11 @@ void dos_qquickview_delete(void* vptr)
     delete view;
 }
 
-void dos_qquickview_source(void* vptr, char** result, int* length)
+void dos_qquickview_source(void* vptr, char** result)
 {
     QQuickView* view = reinterpret_cast<QQuickView*>(vptr);
     QUrl url = view->source();
-    convert_to_cstring(url.toString(), result, length);
+    convert_to_cstring(url.toString(), result);
 }
 
 void dos_qquickview_set_source(void* vptr, const char* filename)
@@ -129,29 +128,16 @@ void dos_qquickview_rootContext(void* vptr, void** context)
     *context = view->rootContext();
 }
 
-void dos_chararray_create(char** ptr)
-{
-    *ptr = 0;
-}
-
-void dos_chararray_create(char** ptr, int size)
-{
-    if (size > 0)
-        *ptr = new char[size];
-    else
-        *ptr = 0;
-}
-
 void dos_chararray_delete(char* ptr)
 {
     if (ptr) delete[] ptr;
 }
 
-void dos_qqmlcontext_baseUrl(void* vptr, char** result, int* length)
+void dos_qqmlcontext_baseUrl(void* vptr, char** result)
 {
     QQmlContext* context = reinterpret_cast<QQmlContext*>(vptr);
     QUrl url = context->baseUrl();
-    convert_to_cstring(url.toString(), result, length);
+    convert_to_cstring(url.toString(), result);
 }
 
 void dos_qqmlcontext_setcontextproperty(void* vptr, const char* name, void* value)
@@ -258,10 +244,10 @@ void dos_qvariant_toDouble(void* vptr, double* value)
     *value = variant->toDouble();
 }
 
-void dos_qvariant_toString(void* vptr, char** ptr, int* size)
+void dos_qvariant_toString(void* vptr, char** ptr)
 {
     auto variant = reinterpret_cast<QVariant*>(vptr);
-    convert_to_cstring(variant->toString(), ptr, size);
+    convert_to_cstring(variant->toString(), ptr);
 }
 
 void dos_qvariant_setInt(void* vptr, int value)
diff --git a/DOtherSide/DOtherSide/DOtherSide.h b/DOtherSide/DOtherSide/DOtherSide.h
index ec67223..b38685e 100644
--- a/DOtherSide/DOtherSide/DOtherSide.h
+++ b/DOtherSide/DOtherSide/DOtherSide.h
@@ -39,17 +39,16 @@ DOS_API void dos_qqmlapplicationengine_delete(void* vptr);
 // QQuickView
 DOS_API void dos_qquickview_create(void** vptr);
 DOS_API void dos_qquickview_show(void* vptr);
-DOS_API void dos_qquickview_source(void* vptr, char** result, int* length);
+DOS_API void dos_qquickview_source(void* vptr, char** result);
 DOS_API void dos_qquickview_set_source(void* vptr, const char* filename);
 DOS_API void dos_qquickview_delete(void* vptr);
-DOS_API void dos_qquickview_rootContext(void* vptr, void** context);
+DOS_API void dos_qquickview_rootContext(void* vptr, void** result);
  
 // QQmlContext
-DOS_API void dos_qqmlcontext_baseUrl(void* vptr, char** result, int* length);
+DOS_API void dos_qqmlcontext_baseUrl(void* vptr, char** result);
 DOS_API void dos_qqmlcontext_setcontextproperty(void* vptr, const char* name, void* value);
 
 // CharArray
-DOS_API void dos_chararray_create(char** ptr, int size);
 DOS_API void dos_chararray_delete(char* ptr);
 
 // QVariant
@@ -62,19 +61,19 @@ DOS_API void dos_qvariant_create_qvariant(void** vptr, void* value);
 DOS_API void dos_qvariant_create_float(void** vptr, float value);
 DOS_API void dos_qvariant_create_double(void** vptr, double value);
 DOS_API void dos_qvariant_create_qabstractlistmodel(void** vptr, void* value);
-DOS_API void dos_qvariant_toInt(void* vptr, int* value);
+DOS_API void dos_qvariant_toInt(void* vptr, int* result);
 DOS_API void dos_qvariant_setInt(void* vptr, int value);
-DOS_API void dos_qvariant_toBool(void* vptr, bool* value);
+DOS_API void dos_qvariant_toBool(void* vptr, bool* result);
 DOS_API void dos_qvariant_setBool(void* vptr, bool value);
-DOS_API void dos_qvariant_toFloat(void* vptr, float* value);
+DOS_API void dos_qvariant_toFloat(void* vptr, float* result);
 DOS_API void dos_qvariant_setFloat(void* vptr, float value);
-DOS_API void dos_qvariant_toDouble(void* vptr, double* value);
+DOS_API void dos_qvariant_toDouble(void* vptr, double* result);
 DOS_API void dos_qvariant_setDouble(void* vptr, double value);
-DOS_API void dos_qvariant_toString(void* vptr, char** ptr, int* size);
+DOS_API void dos_qvariant_toString(void* vptr, char** result);
 DOS_API void dos_qvariant_setString(void* vptr, const char* value);
 DOS_API void dos_qvariant_setQObject(void* vptr, void* value);
 DOS_API void dos_qvariant_setQAbstractListModel(void* vptr, void* value);
-DOS_API void dos_qvariant_isnull(void* vptr, bool* isNull);
+DOS_API void dos_qvariant_isnull(void* vptr, bool* result);
 DOS_API void dos_qvariant_delete(void* vptr);
 DOS_API void dos_qvariant_assign(void* vptr, void* other);
 
@@ -82,24 +81,20 @@ DOS_API void dos_qvariant_assign(void* vptr, void* other);
 DOS_API void dos_qobject_create(void** vptr,
                                 void* dObjectPointer,
                                 DObjectCallback dObjectCallback);
-
 DOS_API void dos_qobject_slot_create(void* vptr,
                                      const char* name,
                                      int parametersCount,
                                      int* parametersMetaTypes,
                                      int* slotIndex);
-
 DOS_API void dos_qobject_signal_create(void* vptr,
                                        const char* name,
                                        int parametersCount,
                                        int* parametersMetaTypes,
                                        int* signalIndex);
-
 DOS_API void dos_qobject_signal_emit(void* vptr,
                                      const char* name,
                                      int parametersCount,
                                      void** parameters);
-
 DOS_API void dos_qobject_property_create(void* vptr,
                                          const char* name,
                                          int propertyMetaType,
@@ -136,24 +131,13 @@ DOS_API void dos_qabstractlistmodel_create(void** vptr,
                                            RoleNamesCallback roleNamesCallback,
                                            FlagsCallback flagsCallback,
                                            HeaderDataCallback headerDataCallback);
-DOS_API void dos_qabstractlistmodel_beginInsertRows(void* vptr,
-                                                    QModelIndexVoidPtr parentIndex,
-                                                    int first,
-                                                    int last);
+DOS_API void dos_qabstractlistmodel_beginInsertRows(void* vptr, void* parent, int first, int last);
 DOS_API void dos_qabstractlistmodel_endInsertRows(void* vptr);
-DOS_API void dos_qabstractlistmodel_beginRemoveRows(void* vptr,
-                                                    QModelIndexVoidPtr parentIndex,
-                                                    int first,
-                                                    int last);
+DOS_API void dos_qabstractlistmodel_beginRemoveRows(void* vptr, void* parent, int first, int last);
 DOS_API void dos_qabstractlistmodel_endRemoveRows(void* vptr);
 DOS_API void dos_qabstractlistmodel_beginResetModel(void* vptr);
 DOS_API void dos_qabstractlistmodel_endResetModel(void* vptr);
-DOS_API void dos_qabstractlistmodel_dataChanged(void* vptr,
-                                                QModelIndexVoidPtr topLeftIndex,
-                                                QModelIndexVoidPtr bottomRightIndex,
-                                                int* rolesArrayPtr,
-                                                int rolesArrayLength);
-
+DOS_API void dos_qabstractlistmodel_dataChanged(void* vptr, void* topLeft, void* bottomRight, int* rolesPtr, int rolesLength);
 DOS_API void dos_qabstractlistmodel_delete(void* vptr);
 
 #ifdef __cplusplus