Problem with WriterAppender

[Prosenjit Sinha]

Hi,                 I am facing a problem with the WriterAppender. I am developing a custom appender class derived from WriterAppender class.  I have initialized the custom appender class as follows:                   log4cxx::LayoutPtr layout(new log4cxx::PatternLayout(""));        istringstream in_bis(ios_base:: in | ios_base::out |                           ios_base::app );        std::ostream *os = new std::ostream(in_bis.rdbuf());        CCustomLogClass *my = new CCustomLogClass (layout,os);   CCustomLogClass has been derived from WriterAppender. Then I added this custom appender class to the root logger and called debug, info, error function with some log strings on root logger. I have set the immediateFlush variable of the custom appender class as FALSE.   To extract the logging information in my custom appender class I have written the following code:          std::string str(10u,' ');        std::stringbuf *pStream = new std::stringbuf;        os->rdbuf(pStream);        pStream->str(str);   I tried to get the logging string from str.c_str() function. But this function was always returning NULL. Can anybody tell what else need to be done to extract logging string or I am doing something wrong here.       Regards Prosenjit Sinha Project Engineer  Plot No:2,MIDC, Pune Infotech Park, Hinjewadi,Pune-411057,India Tel: 09325502750  "Simplicity is the ultimate sophistication."     Confidentiality Notice The information contained in this electronic message and any attachments to this message are intended for the exclusive use of the addressee(s) and may contain confidential or privileged information. If you are not the intended recipient, please notify the sender at Wipro or [EMAIL PROTECTED] immediately and destroy all copies of this message and any attachments.

<<image001.jpg>>