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External
Since: Mar 26, 2006
Posts: 9
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(Msg. 1) Posted: Sun Mar 26, 2006 11:14 am
Post subject: Problems with PDcurses
Archived from groups: rec>games>roguelike>development (more info?)
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I'd like to preface this by saying that I am VERY new to the roguelike
development scene, so I'm trying to learn most of this as I go. I just
picked up a copy of PDcurses, and I've been experimenting with it.
addch() , addstr() and getch() seem to be working just fine, but I'm
having difficulties with getstr(). I run the code:
char *c = NULL;
getstr(c);
And as soon as I input any characters, the program quits with a fatal
error. Doesn't matter what I initialize c to, don't know what else to
change. The program compiles just fine, it just crashes whenever I try
to use getstr.
I'm using Microsoft VC++ 6.0, WinXP. Any other info you need?
Thanks in advance. |
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External
Since: Mar 26, 2005
Posts: 138
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(Msg. 2) Posted: Sun Mar 26, 2006 5:55 pm
Post subject: Re: Problems with PDcurses [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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<kobuscrispi.DeleteThis@gmail.com> schrieb im Newsbeitrag
news:1143400453.038060.95490@u72g2000cwu.googlegroups.com...
> I'd like to preface this by saying that I am VERY new to the roguelike
> development scene, so I'm trying to learn most of this as I go. I just
> picked up a copy of PDcurses, and I've been experimenting with it.
> addch() , addstr() and getch() seem to be working just fine, but I'm
> having difficulties with getstr(). I run the code:
>
> char *c = NULL;
> getstr(c);
That not a PDCurses problem but a "C problem". You do not allocate memory
for the string. Try:
#define MAX_STRING_SIZE 100
char c[MAX_STRING_SIZE];
getstr(c);
HTH |
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External
Since: Mar 26, 2006
Posts: 9
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(Msg. 3) Posted: Sun Mar 26, 2006 9:07 pm
Post subject: Re: Problems with PDcurses [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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External
Since: Mar 10, 2005
Posts: 97
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(Msg. 4) Posted: Sun Mar 26, 2006 11:32 pm
Post subject: Re: Problems with PDcurses [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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copx wrote:
> <kobuscrispi DeleteThis @gmail.com> schrieb im Newsbeitrag
> > char *c = NULL;
> > getstr(c);
>
> That not a PDCurses problem but a "C problem". You do not allocate memory
> for the string. Try:
> #define MAX_STRING_SIZE 100
> char c[MAX_STRING_SIZE];
> getstr(c);
This has a fair chance of working but, in typical c string fashion,
getstr() could read MAX_STRING_SIZE or more characters and write past
the end of the array.
Can we constrained the getstr() function to a specified maximum length?
Lorenzo Gatti >> Stay informed about: Problems with PDcurses |
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External
Since: Mar 26, 2005
Posts: 138
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(Msg. 5) Posted: Mon Mar 27, 2006 3:55 am
Post subject: Re: Problems with PDcurses [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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<gatti DeleteThis @dsdata.it> schrieb im Newsbeitrag
news:1143444735.107101.44980@j33g2000cwa.googlegroups.com...
>
> copx wrote:
>> <kobuscrispi DeleteThis @gmail.com> schrieb im Newsbeitrag
>
>> > char *c = NULL;
>> > getstr(c);
>>
>> That not a PDCurses problem but a "C problem". You do not allocate memory
>> for the string. Try:
>> #define MAX_STRING_SIZE 100
>> char c[MAX_STRING_SIZE];
>> getstr(c);
>
> This has a fair chance of working but, in typical c string fashion,
> getstr() could read MAX_STRING_SIZE or more characters and write past
> the end of the array.
> Can we constrained the getstr() function to a specified maximum length?
No. Use getnstr() if you want that. >> Stay informed about: Problems with PDcurses |
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External
Since: Mar 26, 2006
Posts: 9
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(Msg. 6) Posted: Sun Apr 02, 2006 12:42 pm
Post subject: Re: Problems with PDcurses [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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All right, I've been getting a bit deeper into curses, and I now have
two questions:
1) The COLOR_PAIR(n) definitions only seem to allow for 8 colors
(black, blue, red green, cyan, magenta, yellow, white). How does one go
about getting more than just this very basic color set?
2) Looking through curses.h, I've found Key definitions for nearly
everything except for the escape key. Is there some windows default for
it that I'm unaware of, or what? >> Stay informed about: Problems with PDcurses |
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External
Since: Apr 02, 2006
Posts: 12
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(Msg. 7) Posted: Sun Apr 02, 2006 7:55 pm
Post subject: Re: Problems with PDcurses [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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kobuscrispi DeleteThis @gmail.com wrote:
> 1) The COLOR_PAIR(n) definitions only seem to allow for 8 colors
> (black, blue, red green, cyan, magenta, yellow, white). How does one go
> about getting more than just this very basic color set?
Strictly speaking, there are 16 colors available: the light and dark
versions of each of those 8. Bright foreground colors are specified by
or'ing A_BOLD, bright background colors by A_BLINK (assuming that your
terminal isn't set to actually blink).
Beyond that, there's nothing, sorry. (init_color() would let you access
additional colors, if it worked, though still only 16 at a time.)
> 2) Looking through curses.h, I've found Key definitions for nearly
> everything except for the escape key. Is there some windows default for
> it that I'm unaware of, or what?
ESC is character 27 (0x1b), on all platforms that use ASCII, not just
Windows.
ESC is often avoided in curses-based programs, because -- on "real"
terminals -- it's sometimes used as the start of a multi-character
sequence. This is what the "notimeout()" function is about. But for
PDCurses, it doesn't apply. >> Stay informed about: Problems with PDcurses |
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