diff --git a/widgets/checkbox.h b/widgets/checkbox.h
index f10a994f8..d3b7ffa78 100644
--- a/widgets/checkbox.h
+++ b/widgets/checkbox.h
@@ -45,7 +45,7 @@ class PLASMA_EXPORT CheckBox : public QGraphicsProxyWidget
     Q_PROPERTY(QString image READ image WRITE setImage)
     Q_PROPERTY(QString styleSheet READ styleSheet WRITE setStyleSheet)
     Q_PROPERTY(QCheckBox *nativeWidget READ nativeWidget)
-    Q_PROPERTY(bool isChecked READ isChecked WRITE setChecked)
+    Q_PROPERTY(bool isChecked READ isChecked WRITE setChecked NOTIFY toggled)
 
 public:
     explicit CheckBox(QGraphicsWidget *parent = 0);
diff --git a/widgets/combobox.cpp b/widgets/combobox.cpp
index 315fbc638..e1157ca67 100644
--- a/widgets/combobox.cpp
+++ b/widgets/combobox.cpp
@@ -116,6 +116,8 @@ ComboBox::ComboBox(QGraphicsWidget *parent)
 {
     KComboBox *native = new KComboBox;
     connect(native, SIGNAL(activated(const QString &)), this, SIGNAL(activated(const QString &)));
+    connect(native, SIGNAL(currentIndexChanged(const QString &)),
+            this, SIGNAL(textChanged(const QString &)));
     setWidget(native);
     native->setAttribute(Qt::WA_NoSystemBackground);
 
diff --git a/widgets/combobox.h b/widgets/combobox.h
index 54d724832..092cc4a60 100644
--- a/widgets/combobox.h
+++ b/widgets/combobox.h
@@ -41,7 +41,7 @@ class PLASMA_EXPORT ComboBox : public QGraphicsProxyWidget
     Q_OBJECT
 
     Q_PROPERTY(QGraphicsWidget *parentWidget READ parentWidget)
-    Q_PROPERTY(QString text READ text)
+    Q_PROPERTY(QString text READ text NOTIFY textChanged)
     Q_PROPERTY(QString styleSheet READ styleSheet WRITE setStyleSheet)
     Q_PROPERTY(KComboBox *nativeWidget READ nativeWidget)
 
@@ -82,6 +82,7 @@ public Q_SLOTS:
 
 Q_SIGNALS:
     void activated(const QString & text);
+    void textChanged(const QString & text);
 
 protected:
     void resizeEvent(QGraphicsSceneResizeEvent *event);
diff --git a/widgets/lineedit.h b/widgets/lineedit.h
index 7882c4abe..95022a23d 100644
--- a/widgets/lineedit.h
+++ b/widgets/lineedit.h
@@ -41,7 +41,7 @@ class PLASMA_EXPORT LineEdit : public QGraphicsProxyWidget
     Q_OBJECT
 
     Q_PROPERTY(QGraphicsWidget *parentWidget READ parentWidget)
-    Q_PROPERTY(QString text READ text WRITE setText)
+    Q_PROPERTY(QString text READ text WRITE setText NOTIFY textEdited)
     Q_PROPERTY(QString styleSheet READ styleSheet WRITE setStyleSheet)
     Q_PROPERTY(KLineEdit *nativeWidget READ nativeWidget)
 
diff --git a/widgets/radiobutton.h b/widgets/radiobutton.h
index cbdc1d164..0cbfb772a 100644
--- a/widgets/radiobutton.h
+++ b/widgets/radiobutton.h
@@ -45,7 +45,7 @@ class PLASMA_EXPORT RadioButton : public QGraphicsProxyWidget
     Q_PROPERTY(QString image READ image WRITE setImage)
     Q_PROPERTY(QString styleSheet READ styleSheet WRITE setStyleSheet)
     Q_PROPERTY(QRadioButton *nativeWidget READ nativeWidget)
-    Q_PROPERTY(bool isChecked READ isChecked WRITE setChecked)
+    Q_PROPERTY(bool isChecked READ isChecked WRITE setChecked NOTIFY toggled)
 
 public:
     explicit RadioButton(QGraphicsWidget *parent = 0);
diff --git a/widgets/scrollbar.h b/widgets/scrollbar.h
index b7a3a62d4..887993f34 100644
--- a/widgets/scrollbar.h
+++ b/widgets/scrollbar.h
@@ -42,7 +42,7 @@ class PLASMA_EXPORT ScrollBar : public QGraphicsProxyWidget
 
     Q_PROPERTY(int singleStep READ singleStep WRITE setSingleStep)
     Q_PROPERTY(int pageStep READ pageStep WRITE setPageStep)
-    Q_PROPERTY(int value READ value WRITE setValue)
+    Q_PROPERTY(int value READ value WRITE setValue NOTIFY valueChanged)
     Q_PROPERTY(int minimum READ minimum)
     Q_PROPERTY(int maximum READ maximum)
     Q_PROPERTY(QString stylesheet READ styleSheet WRITE setStyleSheet)
diff --git a/widgets/slider.h b/widgets/slider.h
index 445b933bd..4c1b8d219 100644
--- a/widgets/slider.h
+++ b/widgets/slider.h
@@ -43,7 +43,7 @@ class PLASMA_EXPORT Slider : public QGraphicsProxyWidget
     Q_PROPERTY(QGraphicsWidget *parentWidget READ parentWidget)
     Q_PROPERTY(int maximum READ maximum WRITE setMinimum)
     Q_PROPERTY(int minimum READ minimum WRITE setMinimum)
-    Q_PROPERTY(int value READ value WRITE setValue)
+    Q_PROPERTY(int value READ value WRITE setValue NOTIFY valueChanged)
     Q_PROPERTY(Qt::Orientation orientation READ orientation WRITE setOrientation)
     Q_PROPERTY(QString styleSheet READ styleSheet WRITE setStyleSheet)
     Q_PROPERTY(QSlider *nativeWidget READ nativeWidget)
diff --git a/widgets/spinbox.h b/widgets/spinbox.h
index 5f00e8c02..09b124802 100644
--- a/widgets/spinbox.h
+++ b/widgets/spinbox.h
@@ -44,7 +44,7 @@ class PLASMA_EXPORT SpinBox : public QGraphicsProxyWidget
     Q_PROPERTY(QGraphicsWidget *parentWidget READ parentWidget)
     Q_PROPERTY(int maximum READ maximum WRITE setMinimum)
     Q_PROPERTY(int minimum READ minimum WRITE setMinimum)
-    Q_PROPERTY(int value READ value WRITE setValue)
+    Q_PROPERTY(int value READ value WRITE setValue NOTIFY valueChanged)
     Q_PROPERTY(QString styleSheet READ styleSheet WRITE setStyleSheet)
     Q_PROPERTY(KIntSpinBox *nativeWidget READ nativeWidget)
 
diff --git a/widgets/textbrowser.h b/widgets/textbrowser.h
index 5607e06a7..38dadd49f 100644
--- a/widgets/textbrowser.h
+++ b/widgets/textbrowser.h
@@ -44,7 +44,7 @@ class PLASMA_EXPORT TextBrowser : public QGraphicsProxyWidget
     Q_OBJECT
 
     Q_PROPERTY(QGraphicsWidget *parentWidget READ parentWidget)
-    Q_PROPERTY(QString text READ text WRITE setText)
+    Q_PROPERTY(QString text READ text WRITE setText NOTIFY textChanged)
     Q_PROPERTY(QString stylesheet READ styleSheet WRITE setStyleSheet)
     Q_PROPERTY(KTextBrowser *nativeWidget READ nativeWidget)
 
diff --git a/widgets/textedit.h b/widgets/textedit.h
index b9841e917..69ebd4f59 100644
--- a/widgets/textedit.h
+++ b/widgets/textedit.h
@@ -42,7 +42,7 @@ class PLASMA_EXPORT TextEdit : public QGraphicsProxyWidget
     Q_OBJECT
 
     Q_PROPERTY(QGraphicsWidget *parentWidget READ parentWidget)
-    Q_PROPERTY(QString text READ text WRITE setText)
+    Q_PROPERTY(QString text READ text WRITE setText NOTIFY textChanged)
     Q_PROPERTY(QString stylesheet READ styleSheet WRITE setStyleSheet)
     Q_PROPERTY(KTextEdit *nativeWidget READ nativeWidget)