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Re: newwin seg fault
Re: newwin seg fault
Thu, 14 Mar 2002 19:45:20 -0500
On Thu, Mar 14, 2002 at 07:40:15PM -0500, Joe Davies wrote:
> Hello Thomas,
> My understanding was that it returned a window which filled to the right of
> the screen. I *think* I've figured it out: in one of my following routines,
> I must have a call to a function that tries to print to a line outside of
> the bounds of the main window. ie printing to (17,1) where the window is
> only defined to (14,1).
ok (I should reread the manpage too ;-)
Calling newwin creates and returns a pointer to a new win-
dow with the given number of lines and columns. The upper
left-hand corner of the window is at line begin_y, column
begin_x. If either nlines or ncols is zero, they default
to LINES - begin_y and COLS - begin_x. A new full-screen
window is created by calling newwin(0,0,0,0).
some of the out-of-bounds stuff is caught by limit checks, though.
>From your description I can't tell if this is an overlooked case,
or your program's bug.
> Stupid thing now that I think about it...
> Thanks for your help!
> -----Original Message-----
> From: Thomas Dickey [mailto:address@hidden
> Sent: Thursday, March 14, 2002 7:26 PM
> To: Joe Davies
> Cc: address@hidden
> Subject: Re: newwin seg fault
> On Thu, Mar 14, 2002 at 06:54:37PM -0500, Joe Davies wrote:
> > Hello All,
> > This is my first post to this list. I'm developing a simple app on unix
> > sysV, using Curses (I know, not nCurses!) and can't find any decent
> > resources or help on curses. I ordered a book on Feb 25th, but it hasn't
> > arrived yet!
> > Anyway, when I create a window using newwin(0,0,0,0) I have no problems,
> > when I try to define some constraints to the window, I get a segfault on
> > run. This is using: newwin(14,0,0,0)
> That's a window which has zero columns. Doesn't newwin return a null
> in that case?
> WINDOW *newwin(int nlines, int ncols, int begin_y, int begin_x);
> Thomas E. Dickey <address@hidden>
Thomas E. Dickey <address@hidden>