diff --git a/keyloader.cpp b/keyloader.cpp
index 0b23f0e..fc04e58 100644
--- a/keyloader.cpp
+++ b/keyloader.cpp
@@ -35,7 +35,7 @@ KeyLoader::~KeyLoader()
 {
 }
 
-bool KeyLoader::loadLayout(QString layout)
+bool KeyLoader::loadLayout(const QString &layout)
 {
     bool ret = false;
     if(layout.isEmpty() || !iUtil)
@@ -155,6 +155,8 @@ bool KeyLoader::loadLayoutInternal(QIODevice &from)
 
     if (!ret)
         iKeyData.clear();
+    else
+        emit vkbChanged();
 
     return ret;
 }
diff --git a/keyloader.h b/keyloader.h
index 10d6d05..a2faed9 100644
--- a/keyloader.h
+++ b/keyloader.h
@@ -36,20 +36,23 @@ struct KeyData {
 class KeyLoader : public QObject
 {
     Q_OBJECT
+    Q_PROPERTY(int vkbRows READ vkbRows NOTIFY vkbChanged)
+    Q_PROPERTY(int vkbColumns READ vkbColumns NOTIFY vkbChanged)
 public:
     explicit KeyLoader(QObject *parent = 0);
     virtual ~KeyLoader();
 
     void setUtil(Util* util) { iUtil = util; }
 
-    Q_INVOKABLE bool loadLayout(QString layout);
+    Q_INVOKABLE bool loadLayout(const QString &layout);
 
-    Q_INVOKABLE int vkbRows() { return iVkbRows; }
-    Q_INVOKABLE int vkbColumns() { return iVkbColumns; }
+    int vkbRows() const { return iVkbRows; }
+    int vkbColumns() const { return iVkbColumns; }
     Q_INVOKABLE QVariantList keyAt(int row, int col);
     Q_INVOKABLE const QStringList availableLayouts();
 
 signals:
+    void vkbChanged();
 
 public slots:
 
diff --git a/qml/Keyboard.qml b/qml/Keyboard.qml
index c72246b..c9744a3 100644
--- a/qml/Keyboard.qml
+++ b/qml/Keyboard.qml
@@ -38,7 +38,7 @@ Item {
 
     property int outmargins: util.keyboardMargins
     property int keyspacing: 6
-    property int keysPerRow: keyLoader.vkbColumns()
+    property int keysPerRow: keyLoader.vkbColumns
     property real keywidth: (keyboard.width - keyspacing*keysPerRow - outmargins*2)/keysPerRow;
 
     width: parent.width
@@ -56,14 +56,14 @@ Item {
             Repeater {
                 id: rowRepeater
 
-                model: keyLoader.vkbRows()
+                model: keyLoader.vkbRows
                 delegate: Row {
                     spacing: keyboard.keyspacing
                     Repeater {
                         id: colRepeater
 
                         property int rowIndex: index
-                        model: keyLoader.vkbColumns()
+                        model: keyLoader.vkbColumns
                         delegate: Key {
                             property var keydata: keyLoader.keyAt(colRepeater.rowIndex, index)
                             label: keydata[0]