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Message: [QUOTE="frank dot nielsen at rocketmail dot com, post: 1489755"] Hi there I have a std:istrstream full of data and i want to take this data out to a void* . I have to send the data back through jni (java) so i can't use any streams to extract data... Something like: std::istrstream os; .. stuff data is os... void* dataptr = os.getptr(); ???? HOW TO DO ???? int datalen = is.pcount(); // send back thought jni.... byteArray outdata = env->NewByteArray( datalen ); env->SetByteArrayRegion( outdata, 0, datalen, (jbyte *)(char*)dataptr ); Thanks in advance [/QUOTE]