diff --git a/honoka/libhonoka/convertor.cpp b/honoka/libhonoka/convertor.cpp
index 8f4e77f..0982844 100644
--- a/honoka/libhonoka/convertor.cpp
+++ b/honoka/libhonoka/convertor.cpp
@@ -135,3 +135,15 @@
     // getText�ˤ�����Ρ�
     return vector<Segment>();
 }
+
+
+void Convertor::unSelected()
+{
+    return;
+}
+
+
+void Convertor::selected()
+{
+    return;
+}
diff --git a/honoka/libhonoka/convertor.h b/honoka/libhonoka/convertor.h
index 97d58c7..666e546 100644
--- a/honoka/libhonoka/convertor.h
+++ b/honoka/libhonoka/convertor.h
@@ -71,6 +71,8 @@
     virtual String getName();
     virtual String getPropertyName();
     virtual const vector<Segment> getSegmentList();
+    virtual void unSelected();
+    virtual void selected();
 
 protected:
     ConfigPointer config;
diff --git a/honoka/libhonoka/preeditor.cpp b/honoka/libhonoka/preeditor.cpp
index 04f0099..19215d4 100644
--- a/honoka/libhonoka/preeditor.cpp
+++ b/honoka/libhonoka/preeditor.cpp
@@ -369,3 +369,21 @@
     // getText��Ʊ���˻Ȥ���Attribute���֤��ޤ���
     return AttributeList();
 }
+
+
+/*!
+    \fn PreEditor::selected()
+ */
+void PreEditor::selected()
+{
+    return;
+}
+
+
+/*!
+    \fn PreEditor::unSelected()
+ */
+void PreEditor::unSelected()
+{
+    return;
+}
diff --git a/honoka/libhonoka/preeditor.h b/honoka/libhonoka/preeditor.h
index 0481b92..d79566f 100644
--- a/honoka/libhonoka/preeditor.h
+++ b/honoka/libhonoka/preeditor.h
@@ -85,6 +85,8 @@
     virtual void toWide();
     virtual void toHalf();
     virtual AttributeList getAttributeList();
+    virtual void selected();
+    virtual void unSelected();
 
 protected:
     static WideString text;
diff --git a/honoka/src/honoka_imengine.cpp b/honoka/src/honoka_imengine.cpp
index 91dccd7..1c53c27 100644
--- a/honoka/src/honoka_imengine.cpp
+++ b/honoka/src/honoka_imengine.cpp
@@ -531,7 +531,9 @@
     // PreEditor���ѹ�����᥽�åɡ�
     for(unsigned int i = 0;i < preeditors.size();i ++) {
         if (preeditors[i]->getName() == name) {
+            m_preeditor->unSelected();
             m_preeditor = preeditors[i];
+            m_preeditor->selected();
             return true;
         }
     }
@@ -548,7 +550,9 @@
     // Convertor���ѹ�����᥽�åɡ�
     for(unsigned int i = 0;i < convertors.size();i ++) {
         if (convertors[i]->getName() == name) {
+            m_convertor->unSelected();
             m_convertor = convertors[i];
+            m_convertor->selected();
             return true;
         }
     }