--- a/src/nativeinputserver.cpp	2006-04-25 00:38:27.000000000 +0800
+++ b/src/nativeinputserver.cpp	2009-10-08 14:13:02.000000000 +0800
@@ -112,6 +112,12 @@ bool NativeInputServer::ProcessKey(char 
     //wIldchar should not occur in 1st char so check mCount
     if (mpIme->InCodeSet(c)
             || (!mInput.empty() && mpIme->IsWildChar(c))) {
+        if (mpIme->IsMaxCodes(mInput)) {
+            rBuf = Select(0);
+            mpIme->Reset();
+            mInput = "";
+            mList.Reset();
+        }
         flag = false;
         while (!mStack.empty())
             mStack.pop();
--- a/src/winime.h	2006-04-25 00:38:26.000000000 +0800
+++ b/src/winime.h	2009-10-08 14:13:52.000000000 +0800
@@ -42,6 +42,16 @@ class WinIme {
         bool IsWildChar(char c) const {
             return c == mHead.mWildChar;
         }
+        bool IsMaxCodes(string& str) {
+            string ime (mHead.mName);
+            // "\xce\xe5\xb1\xca"(wubi) is U+4E94, U+7B14 in GBK
+            if (ime.size() >= 4 \
+                    && ime.compare(ime.size()-4, 4, "\xce\xe5\xb1\xca") == 0 \
+                    && str.compare(0, 1, "z") != 0)
+                return str.size() == 4;
+            else
+                return (int) str.size() == mHead.mMaxCodes;
+        }
         string GetName();
         bool InCodeSet(char c) const;
         int Search(string& s, int start);