diff --git a/scim-wnn/src/scim_wnn_imengine.cpp b/scim-wnn/src/scim_wnn_imengine.cpp
index 6c4c409..f5f4ae1 100644
--- a/scim-wnn/src/scim_wnn_imengine.cpp
+++ b/scim-wnn/src/scim_wnn_imengine.cpp
@@ -324,11 +324,16 @@
         show_preedit_string();
         update_preedit_string(m_preeditor->getText());
         update_preedit_caret(m_preeditor->getPos());
-    } else hide_preedit_string();
+    } else {
+        hide_preedit_string();
+    }
     if (mini_status) {
         update_aux_string(utf8_mbstowcs(m_preeditor->getModeName()));
         show_aux_string();
+    } else {
+        hide_aux_string();
     }
+    hide_lookup_table();
     updateProperty();
 }
 /*!
@@ -454,8 +459,6 @@
         m_preeditor->reset();
         wnn.reset();
         m_conversion = false;
-        hide_lookup_table();
-        hide_aux_string();
         updatePreEditor();
         m_lookup = false;
         alp_count = 1;
@@ -464,8 +467,6 @@
     if (k_cancel.comp(key) || k_backspace.comp(key)) {
         wnn.reset();
         m_conversion = false;
-        hide_lookup_table();
-        hide_aux_string();
         m_lookup = false;
         alp_count = 0;
         updatePreEditor();
@@ -545,11 +546,9 @@
         m_preeditor->reset();
         wnn.reset();
         m_conversion = false;
-        hide_preedit_string();
-        hide_lookup_table();
-        hide_aux_string();
         m_lookup = false;
         alp_count = 0;
+        updatePreEditor();
         return(process_preedit_key_event(key));
     }
 
@@ -618,11 +617,9 @@
     alp_count = 0;
     m_conversion = false;
     m_lookup = false;
-    hide_lookup_table ();
-    hide_aux_string();
-    hide_preedit_string ();
     wnn.reset();
     m_preeditor->reset();
+    updatePreEditor();
 }
 
 void WnnInstance::focus_in ()
@@ -638,8 +635,6 @@
         wnn.updateFrequency();
         wnn.reset();
         m_conversion = false;
-        hide_lookup_table();
-        hide_aux_string();
         m_lookup = false;
         alp_count = 0;
     } else if (m_preeditor->getTextLength()) {