关于c_str()注意事项

   今天用想要获得Edit控件上的文本，所以就写了char * pDevId=Edit1->Text.c_str();但是发现获得字符串不对，查了BCB help有下面这句话

AnsiString::c_str() returns a non const temporary pointer to the internal string buffer in the AnsiString object. The pointer is invalid once the statement in which it is used has finished executing. 

示例也说明如果需要获得返回的指针，应改为

  char* pDevId = new char[ Edit1->Text.Length() + 1 ];

    strcpy( pDevId, Edit1->Text.c_str());

Mark，学好英语很重要