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Moving subwindows with NCURSES_OPAQUE
From: |
Katarina Machalkova |
Subject: |
Moving subwindows with NCURSES_OPAQUE |
Date: |
Tue, 15 Dec 2009 17:57:52 +0100 |
User-agent: |
KMail/1.10.3 (Linux/2.6.27.39-0.2-pae; KDE/4.1.3; i686; ; ) |
Hi, ncurses hackers
I'm currently experimenting with ncurses built with enabled NCURSES_OPAQUE
and can't seem to get subwindows moved to the right positions. Following is
the code used for moving the subwindow:
int begin_y, begin_x;
WINDOW *sub;
...
if ( sub && sub->parent() )
{
sub->w->_parx = -1; // force ncurses to actually move the child
ret = mvderwin( sub->w, begin_y, begin_x );
...
}
_parx is set to 'invalid' value here, since mvderwin() contains a check
whether the coordinates of subwindow within parent window changed,
and if they didn't, it evaluates is as there is nothing to do.
I didn't write the code so I don't quite know why it is written the way it is.
Could very well be in order to workaround a bug (discussed in this ML ~2 years
ago) where _begx and _begy of subwindows are not updated if the parent window
is moved to the new location.
Now with NCURSES_OPAQUE, _parx[y] is accessible read-only, so I can no
longer use the above trick. So is _begx[y] and correcting subwindow
coordinates manually won't work either. Anyone has a clue how to replace the
original functionality using opaque ncurses?
Thanks
fB.
- Moving subwindows with NCURSES_OPAQUE,
Katarina Machalkova <=