Hi Perry Ismangil, i dont know how to add the lib files in windows Qt projet ,please send me the Qjsimple .pro file for windows, thanks, gokul., -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20090417/4358cf3b/attachment.html>