Rösberg, Thu 21.11.02 Bart,
an interesting answer, but the wrong thread! ;-) On Wed, 20 Nov 2002 21:42:03 -0500 (EST), Bart Oldeman wrote: BO> On Thu, 21 Nov 2002, Axel C. Frinke wrote: AF>> I don't understand this. Can't you use CHCP to switch between AF>> codepages? BO> The problem is that many DOS apps write directly to video memory and BO> expect the box drawing characters to be at certain places. Yes, but programs assuming codepage 437 can always be a problem. BO> For instance, BO> B3 179 9474 BOX DRAWINGS LIGHT VERTICAL BO> is at 179 for cp437, cp850, cp860, cp866 and others too, but not for BO> ISO8859-x. Yes, but... BO> with cp850 vs. cp437 you already lose the mixed double/single box drawing BO> characters, but these aren't used as often as the non-mixed ones. I don't think so! Consider a programm which displays a table with different box styles for 'inner' and 'outer' lines. Under cp850, the 'junctions' will already look weird. I think, your mail is a good answer to Henrique's posting some days ago: ------------------------------ CUT HERE ------------------------------ To: FreeDOS <[EMAIL PROTECTED]> From: Henrique Peron <[EMAIL PROTECTED]> Subject: [fd-dev] Fw: Keyboard identifiers; different codepages for the same keyboard lay Date: Mon, 18 Nov 2002 14:10:24 -0400 Message-ID: <[EMAIL PROTECTED]> Reply-To: [EMAIL PROTECTED] Hello all, I would like to post the following questions: Case #1: Different codepages for the same keyboard layout. The portuguese keyboard layout can be used either with cp860 or with cp850. Which one is preferred / used more often? The same question applies to: The danish and norwegian keyboard layouts (cp865, cp850). The icelandic keyboard layout (cp861, cp850). The canadian french keyboard layout (cp863, cp850). ------------------------------ CUT HERE ------------------------------ Unlike cp850, these codepages still contain ALL box drawing characters at the same place as in 437, so box-drawing programs will display properly under these codepages. I think this 'similarity' with cp437 might be a good reason to prefer such an 'older' codepage rather than cp850. BO> So it is not so much the nature of text mode, but more an artifact of the BO> direct-video approach. If all text mode apps would write using, say, ANSI I don't think this has to do with direct-video approach, but with the assumption that cp437 ist active instead. BO> sequences (fast enough with NANSI.SYS) then the ANSI driver could do the BO> translation. But the MSDOS ANSI.SYS was slow and not loaded by default so I don't think so. In text mode, every display of characters ends up in a direct-video approach, regardless whether a program does this by itself or uses INT 21h function calls. In text mode there is no way to display mixed box chars under cp850! BO> You *can* chcp but it's really an either/or approach: either you have BO> messed up text boxes or you can read your iso8859-1 text without BO> translation. Of course. Regards, Axel. ---------- list options/archives/etc.: http://www.topica.com/lists/fd-dev unsubscribe: send blank email to: [EMAIL PROTECTED] ==^^=============================================================== This email was sent to: archive@mail-archive.com EASY UNSUBSCRIBE click here: http://topica.com/u/?bz8Rv5.bbRv4l.YXJjaGl2 Or send an email to: [EMAIL PROTECTED] T O P I C A -- Register now to manage your mail! http://www.topica.com/partner/tag02/register ==^^===============================================================
