diff --git a/honoka/src/honoka_def.h b/honoka/src/honoka_def.h
index 83de1f7..6d75579 100644
--- a/honoka/src/honoka_def.h
+++ b/honoka/src/honoka_def.h
@@ -118,5 +118,4 @@
 #define HONOKA_PROP_CONVERTOR                      "/IMEngine/Honoka/Convertor"
 #define HONOKA_PROP_PREDICTOR                      "/IMEngine/Honoka/Predictor"
 
-
 #endif
diff --git a/honoka/src/honoka_imengine.cpp b/honoka/src/honoka_imengine.cpp
index 0174aab..361520c 100644
--- a/honoka/src/honoka_imengine.cpp
+++ b/honoka/src/honoka_imengine.cpp
@@ -726,6 +726,28 @@
 bool HonokaInstance::process_preedit_key_event(const KeyEvent &key)
 {
     // PreEdit���Υ������٥�ȡ�
+    for(unsigned int i = 0;i < k_preeditor.size();i ++) {
+        if (k_preeditor[i].comp(key) && (preeditors[i] != m_preeditor)) {
+            changePreEditor(preeditors[i]->getName());
+            updatePreEditor();
+            return true;
+        }
+    }
+    for(unsigned int i = 0;i < k_convertor.size();i ++) {
+        if (k_convertor[i].comp(key) && (convertors[i] != m_convertor)) {
+            changeConvertor(convertors[i]->getName());
+            updatePreEditor();
+            return true;
+        }
+    }
+    for(unsigned int i = 0;i < k_predictor.size();i ++) {
+        if (k_predictor[i].comp(key) && (predictors[i] != m_predictor)) {
+            m_predictor = predictors[i];
+            updatePreEditor();
+            return true;
+        }
+    }
+
     // PreEditor�Υ������٥�ȥեå���
     if (m_preeditor->keyEventHook(key)) {
         updatePreEditor();