Hello, I had written following code, int Major, Minor ; Display * LocalDpy = localDisplay (); Display * RecDpy = localDisplay (); int LocalScreen = DefaultScreen ( LocalDpy ); if ( ! XRecordQueryVersion (localDisplay (), &Major, &Minor ) ) { QMessageBox::information(0,"Error","XRecord extension not supported on server", QMessageBox::Ok ); } I got error : "undefined reference to `XRecordQueryVersion' " I had checked include file.. it's extern function.. So, for this extension, any more compiler option is required ??? Regards, Sachin -- India.com free e-mail - www.india.com. Check out our value-added Premium features, such as an extra 20MB for mail storage, POP3, e-mail forwarding, and ads-free mailboxes! Powered by Outblaze _______________________________________________ XFree86 mailing list XFree86@xxxxxxxxxxx http://XFree86.Org/mailman/listinfo/xfree86