Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!uakari.primate.wisc.edu!samsung!olivea!mintaka!bloom-beacon!eru!hagbard!sunic!mcsun!ukc!acorn!ixi!clive From: clive@x.co.uk (Clive Feather) Newsgroups: comp.windows.x Subject: Re: Save Under Bit Implementation Message-ID: Date: 8 Nov 90 06:48:55 GMT References: <8bBX6we00Vpc89mW1i@andrew.cmu.edu> Reply-To: clive@x.co.uk (Clive D.W. Feather) Organization: IXI Limited, Cambridge, UK Lines: 17 In article <8bBX6we00Vpc89mW1i@andrew.cmu.edu> ea08+@andrew.cmu.edu (Eric A. Anderson) writes: >When you set the save under bit on a window, the default MIT server >implements this as setting backing store on every window it occludes. >I noted in the source that it says 'Never set backing store on root window.' >Could something be added with the Backing store variable as 'Never give >me a backing store?' If someone is thinking about doing this, can I suggest that any window that does not have ExposureMask set in its event mask shouldn't need backing store under *any* circumstances. No client is prepared to repaint the window on damage, so there is no need for the server to do so either. -- Clive D.W. Feather | IXI Limited | If you lie to the compiler, clive@x.co.uk | 62-74 Burleigh St. | it will get its revenge. Phone: +44 223 462 131 | Cambridge CB1 1OJ | - Henry Spencer (USA: 1 800 XDESK 57) | United Kingdom |