Would a blinking cursor help? If so, look in the documentation for the X11 Resource: cursorBlinkRate. I set the cursor to blink every 1/2 second ( cursorBlinkRate: 500) in THE.
Cheers, Mark On Tue, 2010-12-07 at 11:40 +0100, John P. Hartmann wrote: > Maybe I should offer some background: I'm writing a tn3270 client and > now converting from ncurses to XCurses because I could not get the > shift state in ncurses. > > Reason is I've been using IBM's PCOM ever since my real 3270s were > scrapped because their controller was not year 2k compliant. I'm now > using Fedor13 instead of windows, so PCOM is no longer an option (and > vmplayer/xorg expose bugs that make this combination a non-starter). > > In the 3270 world, a field has a foreground colour and highlighting > attributes, among which is reverse video. These highlight attributes > are mapped directly to the curses attributes. Thus, the white reverse > is a colour pair of (white, black) and the reverse video attribute. > > It looks like my default cursor is a solid white block that obscures > the lower half of the character cell, irrespective of the foreground > colour. > > In testcurs, the colour is white on blue and the cursor is yellow, > which seems to indicate that the cursor is the reverse colour of the > background irrespective of reverse video. With XCurses I can have an > additional eight colour pairs to cater for reverse video so that the > cursor is always visible. > > I'm doing 3270, by the way. > > Looking at the demo, I realise that the cursor colour is the reverse > of the background colour in the colour pair, but ignoring the reverse > video attribute (maybe the code should be fixed to take the reverse > attribute into account?). > > Anyway, I changed the implementation of 3270 reverse video to select a > colour pair that is the reverse of the foreground colour. > > My only remaining gripe (in this department, at least) is that the > half-size cursor obscures the lower half of the character. The full > cursor does reverse video, presumably because nobody would wear seeing > a completely obscured character. > > Is there any reason curs_set(1) could not work the same way as > curs_set(2)? To my untrained eye it would appear that doing the same > thing, but only for half the height would simplify the code in > _display_cursor in x11.c. Is this correct? > > j. > > > > > ---------- Forwarded message ---------- > From: John P. Hartmann <jphartm...@gmail.com> > Date: 7 December 2010 08:17 > Subject: Re: [PDCurses] cursor on white background is invisible (xcurses) > To: Bill J Gray <pl...@projectpluto.com> > Cc: email@example.com > > > If I understand you correctly, curs_set() alters the bitmap used for > the cursor, but not its colour. So whether it is 1 or 2, it will > still be invisible when put on a blank painted on a white background. > Is that correct? > > j. > > On 6 December 2010 16:04, Bill J Gray <pl...@projectpluto.com> wrote: > > Hi Warren, John, > > > >> But that is hardwired into your terminal/emulator. Curses cannot change > >> the way your cursor works. > > > > Under XCurses, it _could_, because it's not a "for-real" terminal; > > it's a GUI window. I've been working on a Windows GUI flavor of PDCurses > > which allows for blinking cursors and such. > > > > But as presently implemented, I'm reasonably sure that you can have > > three types of cursors: an underscore, a solid reversed block, or no > > cursor at all. These are all set using the curs_set() function. (Pause > > to rummage through docs...) > > > > curs_set() alters the appearance of the text cursor. A value of > > 0 for visibility makes the cursor disappear; a value of 1 makes > > the cursor appear "normal" (usually an underline) and 2 makes > > the cursor "highly visible" (usually a block). > > > > Hope that's what you're looking for. The alternative would be to > > fix up XCurses to allow for some more flexibility here. Which would be > > a wonderful solution, and I may even tackle that problem myself, but > > it's not a short-term kind of solution. > > > > -- Bill > > -- * Mark Hessling, m...@rexx.org http://www.rexx.org/ * Author of THE, a Free XEDIT/KEDIT editor, Rexx/SQL, Rexx/CURL, etc. * Maintainer of Regina Rexx interpreter and Rexx/Tk * Use Rexx? join the Rexx Language Association: http://www.rexxla.org/