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From: | "Jon Foster" <jon AT jon-foster DOT co DOT uk> |
To: | "Barubary" <barubary AT cox DOT net>, <cygwin AT cygwin DOT com> |
References: | <002301c1aef8$228e5440$2801a8c0 AT dcuthbert2k> <3C610F7E DOT 5020306 AT syntrex DOT com> <20020206172903 DOT GE31367 AT redhat DOT com> <3C6171A9 DOT 2080702 AT syntrex DOT com> <20020206181851 DOT GF11730 AT redhat DOT com> <035a01c1af4b$b598e9f0$a7eb0544 AT CX535256D> <20020206203254 DOT GD14490 AT redhat DOT com> <03a001c1af5d$1c05dc50$a7eb0544 AT CX535256D> |
Subject: | Re: MS C++ Patent (WAS: DirectX8/DirectInput + cygwin) |
Date: | Wed, 6 Feb 2002 23:02:28 -0000 |
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Hi, > I'm talking about the specific implementation of the virtual table - the > layout of the function pointers relative to the "this" pointer. The > location and format of the vtable relative to the "this" pointer in Visual > C++ is patented by Microsoft. I wish I knew the patent number... I think it's US Patent 5,297,284, "Method and system for implementing virtual functions and virtual base classes and setting a this pointer for an object-oriented programming language". Here's a direct URL (split over 4 lines 'cos it was too long): http://patft.uspto.gov/netacgi/nph-Parser? Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1& u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1='5297284'.WKU.& OS=PN/5297284&RS=PN/5297284 Standard disclaimer applies to this post - I am not a lawyer. :-P Regards, Jon -- "The knack of flying is learning how to throw yourself at the ground and miss." - Hitchhiker's Guide to the Galaxy E-mail: jon AT jon-foster DOT co DOT uk web: http://www.jon-foster.co.uk/ ----- Original Message ----- "Barubary" <barubary AT cox DOT net> wrote: > > Aren't virtual tables a feature of "C++"? > > > > cgf > > I'm talking about the specific implementation of the virtual table - the > layout of the function pointers relative to the "this" pointer. The > location and format of the vtable relative to the "this" pointer in Visual > C++ is patented by Microsoft. I wish I knew the patent number... > > -- Barubary -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Bug reporting: http://cygwin.com/bugs.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
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