Re: Drowning in FIXMEs...

[Jukka Heinonen]

Chris Rankin:
> OK, here's a first draft at a patch. Created with
> reference to my old copies of Ralph Brown's Interrupt
> List.

Well, under DOS VGA text mode, mouse cursor is like "gpm" mouse 
cursor, a character cell which gets inverted or otherwise 
highlighted in order to show where mouse is currently located at.
As far as I know, neither Wine nor Windows supports this
and SetConsoleCursorInfo really has no effect on mouse cursor,
anyway. So, under text mode, hide/show functions should do nothing.

However, under VGA graphics mode, show/hide cursor really should
call ShowCursor. And, if mouse driver is reset, hide count must
be reset to one and cursor must be hidden.

I have some more or less untested patch for show/hide somewhere
but the last time I tried to get that working I had to fix IRQ
handling, again, and after that I was too bored and too busy for
doing DOS stuff. Anyway, it will take probably about half a week 
until I have time for digging out the patch, which I will do if 
this thing is not fixed before that. I guess I should also dig 
my other DOS related patches and submit them as well, I don't know 
if they really help much but at least I would not have pending stuff 
in my computer.

-- 
Jukka Heinonen <http://www.iki.fi/jhei>

Drowning in FIXMEs...

[Kevin Koltzau]

On Sunday 05 September 2004 03:09 pm, Jukka Heinonen wrote:
> Well, under DOS VGA text mode, mouse cursor is like "gpm" mouse 
> cursor, a character cell which gets inverted or otherwise 
> highlighted in order to show where mouse is currently located at.
> As far as I know, neither Wine nor Windows supports this
> and SetConsoleCursorInfo really has no effect on mouse cursor,
> anyway. So, under text mode, hide/show functions should do nothing.

Windows does support this when mouse input is enabled on a console, and
that console is in full screen mode (Hitting Alt-Enter under windows)

Drowning in FIXMEs...

On Sun, Sep 05, 2004 at 10:09:26PM +0300, Jukka Heinonen wrote:
> Well, under DOS VGA text mode, mouse cursor is like "gpm" mouse 
> cursor, a character cell which gets inverted or otherwise

IIRC it's inverted.
> highlighted in order to show where mouse is currently located at.

This is aproximate, since we're talking a console window here, right? 
Where each block is a character?  And there are only so many characters
in the console window?
> As far as I know, neither Wine nor Windows supports this

Supported in Win9x (probably others) in console mode with mouse input
enabled (properties box somewhere) and in full screen mode.  It doesn't
show that way under Windowed/Boxed mode on 9x, because it's pointless --
why should you have a block cursor in the console following an already
existing, nice graphical pointer in Windows?
> and SetConsoleCursorInfo really has no effect on mouse cursor,
> anyway. So, under text mode, hide/show functions should do nothing.
> -- 
> Jukka Heinonen <http://www.iki.fi/jhei>

Drowning in FIXMEs...

[Peter "Firefly" Lund]

On Mon, 6 Sep 2004 michael(a)cherryblossom.homelinux.com wrote:
> On Sun, Sep 05, 2004 at 10:09:26PM +0300, Jukka Heinonen wrote:
> > Well, under DOS VGA text mode, mouse cursor is like "gpm" mouse
> > cursor, a character cell which gets inverted or otherwise
>
> IIRC it's inverted.

That depends.  There is a call where you supply two 16-bit words, one is
XOR'ed with the screen contents and the other AND'ed with it.  That way
you can set any char/attr bit, reset it, invert it, or leave it alone.

-Peter