3 files changed, 17 insertions, 4 deletions
diff --git a/doc/src/declarative/qtdeclarative.qdoc b/doc/src/declarative/qtdeclarative.qdoc
index 8013b92..cbb2146 100644
--- a/doc/src/declarative/qtdeclarative.qdoc
+++ b/doc/src/declarative/qtdeclarative.qdoc
@@ -69,6 +69,10 @@
 /*!
   \macro QML_DECLARE_TYPE()
   \relates QDeclarativeEngine
+
+  Declares a C++ type to be usable in the QML system. In addition
+  to this, a type must also be registered with the QML system using
+  qmlRegisterType().
 */
 
 
@@ -79,6 +83,7 @@
   This template function registers the C++ type in the QML system with
   the name \a qmlName. in the library imported from \a uri having the
   version number composed from \a versionMajor and \a versionMinor.
+  The type should also haved been declared with the QML_DECLARE_TYPE() macro.
 
   Returns the QML type id.
 
@@ -109,6 +114,8 @@
 
   This template function registers the C++ type in the QML system
   under the name \a typeName.
+  The type should also haved been declared with the QML_DECLARE_TYPE() macro.
+
 
   Returns the QML type id.
   */
diff --git a/src/declarative/qml/qdeclarativeengine.cpp b/src/declarative/qml/qdeclarativeengine.cpp
index f621af5..c5afe92 100644
--- a/src/declarative/qml/qdeclarativeengine.cpp
+++ b/src/declarative/qml/qdeclarativeengine.cpp
@@ -1949,6 +1949,8 @@ void QDeclarativeEngine::setPluginPathList(const QStringList &paths)
 /*!
   Imports the plugin named \a filePath with the \a uri provided.
   Returns true if the plugin was successfully imported; otherwise returns false.
+
+  The plugin has to be a Qt plugin which implements the QDeclarativeExtensionPlugin interface.
 */
 bool QDeclarativeEngine::importPlugin(const QString &filePath, const QString &uri, QString *errorString)
 {
diff --git a/src/declarative/qml/qdeclarativeextensionplugin.cpp b/src/declarative/qml/qdeclarativeextensionplugin.cpp
index 5b7f1e8..762c642d 100644
--- a/src/declarative/qml/qdeclarativeextensionplugin.cpp
+++ b/src/declarative/qml/qdeclarativeextensionplugin.cpp
@@ -55,17 +55,21 @@ QT_BEGIN_NAMESPACE
     applications using the QDeclarativeEngine class.
 
     Writing a QML extension plugin is achieved by subclassing this
-    base class, reimplementing the pure virtual initialize()
+    base class, reimplementing the pure virtual registerTypes()
     function, and exporting the class using the Q_EXPORT_PLUGIN2()
-    macro. See \l {How to Create Qt Plugins} for details.
+    macro.
 
-    \sa QDeclarativeEngine::importExtension()
+    See \l {Extending QML in C++} for details how to write a QML extension plugin.
+    See \l {How to Create Qt Plugins} for general Qt plugin documentation.
+
+    \sa QDeclarativeEngine::importPlugin()
 */
 
 /*!
     \fn void QDeclarativeExtensionPlugin::registerTypes(const char *uri)
 
-    Registers the QML types in the given \a uri.
+    Registers the QML types in the given \a uri. Here you call qmlRegisterType() for
+    all types which are provided by the extension plugin.
 */
 
 /*!