29.CString::Insert

int Insert( int nIndex, TCHAR ch ); 

int Insert( int nIndex, LPCTSTR pstr ); 

返回值：返回修改后的长度，nIndex是字符（或字符串）插入后的索引号例子

示例：

CString str( “HockeyBest”);

 int n = str.Insert( 6, “is” );

 ASSERT( n == str.GetLength( ) ); 

printf( “1: %s
”, ( LPCTSTR ) str );

 n = str.Insert( 6, ' ' ); 

ASSERT( n == str.GetLength( ) ); 

printf ( “2: %s
”, (LPCTSTR) STR );

 n = str.Insert(555, ‘1’);

ASSERT( n == str.GetLength ( ) );

 printf ( “3: %s
”, ( LPCTSTR ) str ); 

输出

1. Hockeyis Best

2. Hockey is Best

3. Hockey is Best!

 转自：

 http://blog.163.com/ccd_ok/blog/static/310238892007510113223798/