diff --git a/qml.core.scm b/qml.core.scm
index 5c9425e..33435ed 100644
--- a/qml.core.scm
+++ b/qml.core.scm
@@ -275,13 +275,19 @@
     (dos_qmetaobject_invoke_method (ptr qmo) callback data (val connection-type)))
   (define-method (delete-pointer (qmo <QMetaObject>))
     (dos_qmetaobject_delete (ptr qmo)))
+  (define (qmetaobject kind)
+    (case kind
+      ((qobject:) (make <QMetaObject> 'ptr (dos_qobject_qmetaobject)))
+      ((qabstractitemmodel:) (make <QMetaObject> 'ptr (dos_qabstractitemmodel_qmetaobject)))
+      ((qabstracttablemodel:) (make <QMetaObject> 'ptr (dos_qabstracttablemodel_qmetaobject)))
+      ((qabstractlistmodel:) (make <QMetaObject> 'ptr (dos_qabstractlistmodel_qmetaobject)))))
 
   (define-class <QModelIndex> (<QMLBase>))
   (define-method (initialize-instance (qmi <QModelIndex>))
     (set! (ptr qmi) (dos_qmodelindex_create))
     (call-next-method))
-  (define-method (copy (qmi <QModelIndex>) (other <QModelIndex>))
-    (make <QModelIndex> 'ptr (dos_qmodelindex_create_qmodelindex (ptr qmi) (ptr other))))
+  (define-method (copy (qmi <QModelIndex>))
+    (make <QModelIndex> 'ptr (dos_qmodelindex_create_qmodelindex (ptr qmi))))
   (define-method (row (qmi <QModelIndex>))
     (dos_qmodelindex_row (ptr qmi)))
   (define-method (column (qmi <QModelIndex>))
diff --git a/qml.lowlevel.scm b/qml.lowlevel.scm
index e7a010f..ccb3927 100644
--- a/qml.lowlevel.scm
+++ b/qml.lowlevel.scm
@@ -123,6 +123,36 @@
     (define DosQtConnectionTypeUniqueConnection #x80)
 
     ;; Functions
+    ;; ParameterDefinition
+    (define dos_parameterdefinition_create
+      (foreign-lambda* scheme-object ((c-string name)
+                                      (int metaType))
+        "struct ParameterDefinition pd = {.name = name, .metaType = metaType};"
+        "C_word* ptr = C_alloc(1);"
+        "C_return(C_structure(&ptr,C_SIZEOF_STRUCTURE(3),pd));"))
+
+    ;; SignalDefinition
+    (define dos_signaldefinition_create
+      (foreign-lambda* scheme-object ((c-string name)
+                                      (int parametersCount)
+                                      (pointer-vector parameters))
+        "struct SignalDefinition sd = {.name = name, .parametersCount = parametersCount, "
+        ".parameters = (ParameterDefinition*) parameters};"
+        "C_word* ptr = C_alloc(1);"
+        "C_return(C_structure(&ptr,C_SIZEOF_STRUCTURE(4),sd));"))
+
+    ;; SignalDefinitions
+    (define dos_signaldefinitions_create
+      (foreign-lambda* (c-pointer SignalDefinitions) ((int count)
+                                                      (pointer-vector definitions))
+        "struct SignalDefinitions sd = {.count = count, .definitions = (SignalDefinition*) definitions};"
+        "struct SignalDefinitions* sdptr = (struct SignalDefinitions*) malloc(sizeof(struct SignalDefinitions));"
+        "*sdptr = sd;"
+        "C_return(sdptr);"))
+    (define dos_signaldefinitions_delete
+      (foreign-lambda* void (((c-pointer SignalDefinitions) definitions))
+        "free(definitions);"))
+
     ;; QCoreApplication
     (define dos_qcoreapplication_application_dir_path
       (foreign-lambda c-string "dos_qcoreapplication_application_dir_path"))
@@ -284,6 +314,14 @@
         "dos_chararray_delete(ptr);"))
 
     ;; QVariant
+    (define dos_qvariantarray_create
+      (foreign-lambda* (c-pointer DosQVariantArray) ((int size)
+                                                     (pointer-vector data))
+        "struct DosQVariantArray qva = "
+        "{.size = size, .data = data};"
+        "struct DosQVariantArray* qvaptr = (struct DosQVariantArray*) malloc(sizeof(struct DosQVariantArray));"
+        "*qvaptr = qva;"
+        "C_return(qvaptr);"))
     (define dos_qvariantarray_delete
       (foreign-lambda* void (((c-pointer DosQVariantArray) ptr))
         "dos_qvariantarray_delete(ptr);"))
@@ -708,6 +746,21 @@
       (foreign-lambda bool "dos_qurl_isValid"
         (c-pointer DosQUrl)))
 
+    ;; QmlRegisterType
+    (define dos_qmlregistertype_create
+      (foreign-lambda* (c-pointer QmlRegisterType) ((int major)
+                                                    (int minor)
+                                                    (c-string uri)
+                                                    (c-string qml)
+                                                    ((c-pointer DosQMetaObject) staticMetaObject)
+                                                    (CreateDObject createDObject)
+                                                    (DeleteDObject deleteDObject))
+        "struct QmlRegisterType qrt = {.major = major, .minor = minor, .uri = uri, .qml = qml,"
+        ".staticMetaObject = staticMetaObject, .createDObject = createDObject, .deleteDObject = deleteDObject};"
+        "struct QmlRegisterType* qrtptr = (struct QmlRegisterType*) malloc(sizeof(struct QmlRegisterType));"
+        "*qrtptr = qrt;"
+        "C_return(qrtptr);"))
+
     ;; QDeclarative
     (define dos_qdeclarative_qmlregistertype
       (foreign-lambda int "dos_qdeclarative_qmlregistertype"