--- qtermiplocation.cpp.bak	2005-07-27 18:24:46.000000000 +0800
+++ qtermiplocation.cpp	2005-07-27 18:25:09.000000000 +0800
@@ -79,13 +79,13 @@
 	if( fseek( fp, (long)offset, SEEK_SET ) ==-1 )
 	{
 		qDebug( " readLineFrom error 1 " );
-		ret_str = QCString(NULL);
+		ret_str = QCString(0);
 		return -1;
 	}
 	if( fgets( (char *) str, 512, fp ) == NULL )
 	{
 		qDebug( " readLineFrom error 2 " );
-		ret_str = QCString(NULL);
+		ret_str = QCString(0);
 		return -1;
 	}
 	ret_str = str;
--- qtermtextline.cpp.bak	2005-07-27 18:22:23.000000000 +0800
+++ qtermtextline.cpp	2005-07-27 18:23:00.000000000 +0800
@@ -235,7 +235,7 @@
 
 	
 	if(index>=m_length)
-		return NULL;
+		return QCString(0);
 		
 	printf("index=%d len=%d m_length=%d\n", index, len, m_length);