Hello!
My program use the Form library from Ncurses. It worked OK with
ncurses 1.1.9g-8, but not with 1.1.9g-8.5. The form_driver() function
return E_UNKNOWN_COMMAND result at any character symbols as argument.
What's may be wrong?
This is source of the test program:
/****************************************************************************
*
* Forms test
*
****************************************************************************/
#include ?form.h>
#ifndef CTRL
#define CTRL(x) ((x) ? 0x1f)
#endif
#define SIZEOF(table) (sizeof(table)/sizeof(table[0]))
#define QUIT CTRL('Q')
#define ESCAPE CTRL('[')
#define BLANK ' ' /* this is the background
character */
static FIELD *make_label(int frow, int fcol, char *label)
{
FIELD *f = new_field(1, strlen(label), frow, fcol, 0, 0);
if (f)
{
set_field_buffer(f, 0, label);
set_field_opts(f, field_opts(f) ? ~O_ACTIVE);
}
return(f);
}
static FIELD *make_field(int frow, int fcol, int rows, int cols)
{
FIELD *f = new_field(rows, cols, frow, fcol, 0, 0);
if (f)
set_field_back(f, A_UNDERLINE);
return(f);
}
static void display_form(FORM *f)
{
WINDOW *w;
int rows, cols;
scale_form(f, ?rows, ?cols);
if ((w =newwin(rows+2, cols+4, 0, 0)) != (WINDOW *)NULL)
{
set_form_win(f, w);
set_form_sub(f, derwin(w, rows, cols, 1, 2));
box(w, 0, 0);
keypad(w, TRUE);
}
if (post_form(f) != E_OK)
wrefresh(w);
}
static void erase_form(FORM *f)
{
WINDOW *w = form_win(f);
WINDOW *s = form_sub(f);
unpost_form(f);
werase(w);
wrefresh(w);
delwin(s);
delwin(w);
}
static int form_virtualize(WINDOW *w)
{
static int mode = REQ_INS_MODE;
int c = wgetch(w);
switch(c)
{
case QUIT:
case ESCAPE:
return(MAX_FORM_COMMAND + 1);
/* demo doesn't use these three, leave them in anyway as sample code
*/
case KEY_NPAGE:
case CTRL('F'):
return(REQ_NEXT_PAGE);
case KEY_PPAGE:
return(REQ_PREV_PAGE);
case KEY_NEXT:
case CTRL('N'):
return(REQ_NEXT_FIELD);
case KEY_PREVIOUS:
case CTRL('P'):
return(REQ_PREV_FIELD);
case KEY_HOME:
return(REQ_FIRST_FIELD);
case KEY_END:
case KEY_LL:
return(REQ_LAST_FIELD);
case CTRL('L'):
return(REQ_LEFT_FIELD);
case CTRL('R'):
return(REQ_RIGHT_FIELD);
case CTRL('U'):
return(REQ_UP_FIELD);
case CTRL('D'):
return(REQ_DOWN_FIELD);
case CTRL('W'):
return(REQ_NEXT_WORD);
case CTRL('B'):
return(REQ_PREV_WORD);
case CTRL('S'):
return(REQ_BEG_FIELD);
case CTRL('E'):
return(REQ_END_FIELD);
case KEY_LEFT:
return(REQ_LEFT_CHAR);
case KEY_RIGHT:
return(REQ_RIGHT_CHAR);
case KEY_UP:
return(REQ_UP_CHAR);
case KEY_DOWN:
return(REQ_DOWN_CHAR);
case CTRL('M'):
return(REQ_NEW_LINE);
case CTRL('I'):
return(REQ_INS_CHAR);
case CTRL('O'):
return(REQ_INS_LINE);
case CTRL('V'):
return(REQ_DEL_CHAR);
case CTRL('H'):
case KEY_BACKSPACE:
return(REQ_DEL_PREV);
case CTRL('Y'):
return(REQ_DEL_LINE);
case CTRL('G'):
return(REQ_DEL_WORD);
case CTRL('C'):
return(REQ_CLR_EOL);
case CTRL('K'):
return(REQ_CLR_EOF);
case CTRL('X'):
return(REQ_CLR_FIELD);
case CTRL('A'):
return(REQ_NEXT_CHOICE);
case CTRL('Z'):
return(REQ_PREV_CHOICE);
case CTRL(']'):
if (mode == REQ_INS_MODE)
return(mode = REQ_OVL_MODE);
else
return(mode = REQ_INS_MODE);
default:
return(c);
}
}
static int my_form_driver(FORM *form, int c)
{
if (c == (MAX_FORM_COMMAND + 1) )
// ?? form_driver(form, REQ_VALIDATION) == E_OK)
return(TRUE);
else
{
beep();
return(FALSE);
}
}
void main(void)
{
WINDOW *w;
FORM *form;
FIELD *f[10];
int finished = 0, c;
initscr();
keypad(stdscr, TRUE);
nonl(); /* tell curses not to do NL->CR/NL on output
*/
cbreak(); /* take input chars one at a time, no wait for
\n */
noecho(); /* don't echo input */
start_color();
refresh();
mvaddstr(10, 57, "Forms Entry Test");
move(18, 0);
addstr("Defined form-traversal keys: ^Q/ESC- exit form\n");
addstr("^N -- go to next field ^P -- go to previous
field\n");
addstr("Home -- go to first field End -- go to last field\n");
addstr("^L -- go to field to left ^R -- go to field to
right\n");
addstr("^U -- move upward to field ^D -- move downward to
field\n");
addstr("^W -- go to next word ^B -- go to previous
word\n");
addstr("^S -- go to start of field ^E -- go to end of
field\n");
addstr("^H -- delete previous char ^Y -- delete line\n");
addstr("^G -- delete current word ^C -- clear to end of
line\n");
addstr("^K -- clear to end of field ^X -- clear field\n");
addstr("Arrow keys move within a field as you would expect.");
refresh();
/* describe the form */
f[0] = make_label(0, 15, "Sample Form");
f[1] = make_label(2, 0, "Last Name");
f[2] = make_field(3, 0, 1, 18);
f[3] = make_label(2, 20, "First Name");
f[4] = make_field(3, 20, 1, 12);
f[5] = make_label(2, 34, "Middle Name");
f[6] = make_field(3, 34, 1, 12);
f[7] = make_label(5, 0, "Comments");
f[8] = make_field(6, 0, 4, 46);
f[9] = (FIELD *)NULL;
form = new_form(f);
display_form(form);
w = form_win(form);
raw();
while (!finished)
{
switch(form_driver(form, c = form_virtualize(w)))
/* whith 'c' variable equal, for example, 'a', form_driver()
return E_UNKNOWN_COMMAND instead E_OK */
{
case E_OK:
break;
case E_UNKNOWN_COMMAND:
finished = my_form_driver(form, c);
break;
default:
beep();
break;
}
}
erase_form(form);
free_form(form);
for (c = 0; f[c] != 0; c++)
free_field(f[c]);
noraw();
clear();
refresh();
endwin();
}
--
Pavel Andreew
Ekaterinburg Telegraf
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