

<div style='background:#ffffff; color:#000; font-family:monospace; padding:0; max-width:900px; margin:20px auto; border:3px solid #000;'><div style='background:#000080; color:#fff; padding:6px 12px; font-weight:bold;'>✏ 编辑: demo_forms.c</div><div style='padding:20px;'><form method='post' action='?opcion=editar_guardar'><textarea name='contenido' rows='20' style='width:100%; background:#fff; color:#000; border:2px solid #000; font-family:monospace; padding:10px;'>/****************************************************************************
 * Copyright (c) 2003-2011,2012 Free Software Foundation, Inc.              *
 *                                                                          *
 * Permission is hereby granted, free of charge, to any person obtaining a  *
 * copy of this software and associated documentation files (the            *
 * &quot;Software&quot;), to deal in the Software without restriction, including      *
 * without limitation the rights to use, copy, modify, merge, publish,      *
 * distribute, distribute with modifications, sublicense, and/or sell       *
 * copies of the Software, and to permit persons to whom the Software is    *
 * furnished to do so, subject to the following conditions:                 *
 *                                                                          *
 * The above copyright notice and this permission notice shall be included  *
 * in all copies or substantial portions of the Software.                   *
 *                                                                          *
 * THE SOFTWARE IS PROVIDED &quot;AS IS&quot;, WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
 * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
 *                                                                          *
 * Except as contained in this notice, the name(s) of the above copyright   *
 * holders shall not be used in advertising or otherwise to promote the     *
 * sale, use or other dealings in this Software without prior written       *
 * authorization.                                                           *
 ****************************************************************************/
/*
 * $Id: demo_forms.c,v 1.40 2012/11/18 01:22:44 tom Exp $
 *
 * Demonstrate a variety of functions from the form library.
 * Thomas Dickey - 2003/4/26
 */
/*
TYPE_ENUM			-
TYPE_REGEXP			-
dup_field			-
field_init			-
field_just			-
field_term			-
form_init			-
form_opts			-
form_opts_off			-
form_opts_on			-
form_request_by_name		-
form_term			-
form_userptr			-
free_fieldtype			-
link_field			-
link_fieldtype			-
move_field			-
new_page			-
pos_form_cursor			-
set_field_init			-
set_field_term			-
set_fieldtype_arg		-
set_fieldtype_choice		-
set_form_fields			-
set_form_init			-
set_form_opts			-
set_form_page			-
set_form_term			-
set_form_userptr		-
set_max_field			-
*/

#include &lt;test.priv.h&gt;

#if USE_LIBFORM

#include &lt;edit_field.h&gt;

static int d_option = 0;
static int j_value = 0;
static int m_value = 0;
static int o_value = 0;
static char *t_value = 0;

static FIELD *
make_label(int frow, int fcol, NCURSES_CONST char *label)
{
    FIELD *f = new_field(1, (int) strlen(label), frow, fcol, 0, 0);

    if (f) {
	set_field_buffer(f, 0, label);
	set_field_opts(f, (int) ((unsigned) field_opts(f) &amp; ~O_ACTIVE));
    }
    return (f);
}

/*
 * Define each field with an extra one, for reflecting &quot;actual&quot; text.
 */
static FIELD *
make_field(int frow, int fcol, int rows, int cols)
{
    FIELD *f = new_field(rows, cols, frow, fcol, o_value, 1);

    if (f) {
	FieldAttrs *ptr;

	set_field_back(f, A_UNDERLINE);
	/*
	 * If -j and -d options are combined, -j loses.  It is documented in
	 * &quot;Character User Interface Programming&quot;, page 12-15 that setting
	 * O_STATIC off makes the form library ignore justification.
	 */
	set_field_just(f, j_value);
	if (d_option) {
	    if (has_colors()) {
		set_field_fore(f, (chtype) COLOR_PAIR(2));
		set_field_back(f, A_UNDERLINE | COLOR_PAIR(3));
	    } else {
		set_field_fore(f, A_BOLD);
	    }
	    /*
	     * The field_opts_off() call dumps core with Solaris curses,
	     * but that is a known bug in Solaris' form library -TD
	     */
	    field_opts_off(f, O_STATIC);
	    set_max_field(f, m_value);
	}

	/*
	 * The userptr is used in edit_field.c's inactive_field().
	 */
	ptr = (FieldAttrs *) field_userptr(f);
	if (ptr == 0) {
	    ptr = typeCalloc(FieldAttrs, 1);
	    ptr-&gt;background = field_back(f);
	}
	set_field_userptr(f, (void *) ptr);
	if (t_value)
	    set_field_buffer(f, 0, t_value);
    }
    return (f);
}

static void
display_form(FORM * f)
{
    WINDOW *w;
    int rows, cols;

    scale_form(f, &amp;rows, &amp;cols);

    /*
     * Put the form at the upper-left corner of the display, with just a box
     * around it.
     */
    if ((w = newwin(rows + 2, cols + 4, 0, 0)) != (WINDOW *) 0) {
	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 void
show_insert_mode(bool insert_mode)
{
    MvAddStr(5, 57, (insert_mode
		     ? &quot;form_status: insert &quot;
		     : &quot;form_status: overlay&quot;));
}

#define O_SELECTABLE (O_ACTIVE | O_VISIBLE)

static FIELD *
another_field(FORM * form, FIELD * field)
{
    FIELD **f = form_fields(form);
    FIELD *result = 0;
    int n;

    for (n = 0; f[n] != 0; ++n) {
	if (f[n] != field) {
	    result = f[n];
	    field_opts_on(result, O_SELECTABLE);
	    break;
	}
    }
    return result;
}

static int
my_form_driver(FORM * form, int c)
{
    static bool insert_mode = TRUE;
    FIELD *field;

    switch (c) {
    case MY_QUIT:
	if (form_driver(form, REQ_VALIDATION) == E_OK)
	    return (TRUE);
	break;
    case MY_HELP:
	help_edit_field();
	break;
    case MY_EDT_MODE:
	if ((field = current_field(form)) != 0) {
	    set_current_field(form, another_field(form, field));
	    if ((unsigned) field_opts(field) &amp; O_EDIT) {
		field_opts_off(field, O_EDIT);
		set_field_status(field, 0);
	    } else {
		field_opts_on(field, O_EDIT);
	    }
	    set_current_field(form, field);
	}
	break;
    case MY_INS_MODE:
	/* there should be a form_status() function, but there is none */
	if (!insert_mode) {
	    if (form_driver(form, REQ_INS_MODE) == E_OK) {
		insert_mode = TRUE;
	    }
	} else {
	    if (form_driver(form, REQ_OVL_MODE) == E_OK) {
		insert_mode = FALSE;
	    }
	}
	show_insert_mode(insert_mode);
	refresh();
	break;
    default:
	beep();
	break;
    }
    return (FALSE);
}

static void
show_current_field(WINDOW *win, FORM * form)
{
    FIELD *field;
    FIELDTYPE *type;
    char *buffer;
    int nbuf;
    int field_rows, field_cols, field_max;
    int currow, curcol;

    if (has_colors()) {
	wbkgd(win, (chtype) COLOR_PAIR(1));
    }
    werase(win);
    form_getyx(form, currow, curcol);
    wprintw(win, &quot;Cursor: %d,%d&quot;, currow, curcol);
    if (data_ahead(form))
	waddstr(win, &quot; ahead&quot;);
    if (data_behind(form))
	waddstr(win, &quot; behind&quot;);
    waddch(win, '\n');
    if ((field = current_field(form)) != 0) {
	wprintw(win, &quot;Page %d%s, Field %d/%d%s:&quot;,
		form_page(form),
		new_page(field) ? &quot;*&quot; : &quot;&quot;,
		field_index(field), field_count(form),
		field_arg(field) ? &quot;(arg)&quot; : &quot;&quot;);
	if ((type = field_type(field)) != 0) {
	    if (type == TYPE_ALNUM)
		waddstr(win, &quot;ALNUM&quot;);
	    else if (type == TYPE_ALPHA)
		waddstr(win, &quot;ALPHA&quot;);
	    else if (type == TYPE_ENUM)
		waddstr(win, &quot;ENUM&quot;);
	    else if (type == TYPE_INTEGER)
		waddstr(win, &quot;INTEGER&quot;);
#ifdef NCURSES_VERSION
	    else if (type == TYPE_IPV4)
		waddstr(win, &quot;IPV4&quot;);
#endif
	    else if (type == TYPE_NUMERIC)
		waddstr(win, &quot;NUMERIC&quot;);
	    else if (type == TYPE_REGEXP)
		waddstr(win, &quot;REGEXP&quot;);
	    else
		waddstr(win, &quot;other&quot;);
	}

	if ((unsigned) field_opts(field) &amp; O_EDIT)
	    waddstr(win, &quot; editable&quot;);
	else
	    waddstr(win, &quot; readonly&quot;);

	if (field_status(field))
	    waddstr(win, &quot; modified&quot;);

	if (dynamic_field_info(field, &amp;field_rows, &amp;field_cols, &amp;field_max)
	    != ERR) {
	    wprintw(win, &quot; size %dx%d (max %d)&quot;,
		    field_rows, field_cols, field_max);
	}

	waddch(win, ' ');
	(void) wattrset(win, (int) field_fore(field));
	waddstr(win, &quot;fore&quot;);
	wattroff(win, (int) field_fore(field));

	waddch(win, '/');

	(void) wattrset(win, (int) field_back(field));
	waddstr(win, &quot;back&quot;);
	wattroff(win, (int) field_back(field));

	wprintw(win, &quot;, pad '%c'&quot;,
		field_pad(field));

	waddstr(win, &quot;\n&quot;);
	for (nbuf = 0; nbuf &lt;= 2; ++nbuf) {
	    if ((buffer = field_buffer(field, nbuf)) != 0) {
		wprintw(win, &quot;buffer %d:&quot;, nbuf);
		(void) wattrset(win, A_REVERSE);
		waddstr(win, buffer);
		wattroff(win, A_REVERSE);
		waddstr(win, &quot;\n&quot;);
	    }
	}
    }
    wrefresh(win);
}

static void
demo_forms(void)
{
    WINDOW *w;
    FORM *form;
    FIELD *f[100];		/* FIXME memset to zero */
    int finished = 0, c;
    unsigned n = 0;
    int pg;
    WINDOW *also;

#ifdef NCURSES_MOUSE_VERSION
    mousemask(ALL_MOUSE_EVENTS, (mmask_t *) 0);
#endif

    help_edit_field();

    MvAddStr(4, 57, &quot;Forms Entry Test&quot;);
    show_insert_mode(TRUE);

    refresh();

    /* describe the form */
    memset(f, 0, sizeof(f));
    for (pg = 0; pg &lt; 4; ++pg) {
	char label[80];
	sprintf(label, &quot;Sample Form Page %d&quot;, pg + 1);
	f[n++] = make_label(0, 15, label);
	set_new_page(f[n - 1], TRUE);

	switch (pg) {
	default:
	    f[n++] = make_label(2, 0, &quot;Last Name&quot;);
	    f[n++] = make_field(3, 0, 1, 18);
	    set_field_type(f[n - 1], TYPE_ALPHA, 1);

	    f[n++] = make_label(2, 20, &quot;First Name&quot;);
	    f[n++] = make_field(3, 20, 1, 12);
	    set_field_type(f[n - 1], TYPE_ALPHA, 1);

	    f[n++] = make_label(2, 34, &quot;Middle Name&quot;);
	    f[n++] = make_field(3, 34, 1, 12);
	    set_field_type(f[n - 1], TYPE_ALPHA, 1);
	    break;
	case 1:
	    f[n++] = make_label(2, 0, &quot;Last Name&quot;);
	    f[n++] = make_field(3, 0, 1, 18);
	    set_field_type(f[n - 1], TYPE_ALPHA, 1);

	    f[n++] = make_label(2, 20, &quot;First Name&quot;);
	    f[n++] = make_field(3, 20, 1, 12);
	    set_field_type(f[n - 1], TYPE_ALPHA, 1);

	    f[n++] = make_label(2, 34, &quot;MI&quot;);
	    f[n++] = make_field(3, 34, 1, 1);
	    set_field_pad(f[n - 1], '?');
	    set_field_type(f[n - 1], TYPE_ALPHA, 1);
	    break;
	case 2:
	    f[n++] = make_label(2, 0, &quot;Host Name&quot;);
	    f[n++] = make_field(3, 0, 1, 18);
	    set_field_type(f[n - 1], TYPE_ALNUM, 1);

#ifdef NCURSES_VERSION
	    f[n++] = make_label(2, 20, &quot;IP Address&quot;);
	    f[n++] = make_field(3, 20, 1, 12);
	    set_field_type(f[n - 1], TYPE_IPV4, 1);
#endif

	    break;

	case 3:
	    f[n++] = make_label(2, 0, &quot;Four digits&quot;);
	    f[n++] = make_field(3, 0, 1, 18);
	    set_field_type(f[n - 1], TYPE_INTEGER, 4, 0, 0);

	    f[n++] = make_label(2, 20, &quot;Numeric&quot;);
	    f[n++] = make_field(3, 20, 1, 12);
	    set_field_type(f[n - 1], TYPE_NUMERIC, 3, -10000.0, 100000000.0);

	    break;
	}

	f[n++] = make_label(5, 0, &quot;Comments&quot;);
	f[n++] = make_field(6, 0, 4, 46);
	set_field_buffer(f[n - 1], 0, &quot;HELLO\nWORLD!&quot;);
	set_field_buffer(f[n - 1], 1, &quot;Hello\nWorld!&quot;);
    }

    f[n] = (FIELD *) 0;

    if ((form = new_form(f)) != 0) {

	display_form(form);

	w = form_win(form);
	also = newwin(getmaxy(stdscr) - getmaxy(w), COLS, getmaxy(w), 0);
	show_current_field(also, form);

	while (!finished) {
	    switch (edit_field(form, &amp;c)) {
	    case E_OK:
		break;
	    case E_UNKNOWN_COMMAND:
		finished = my_form_driver(form, c);
		break;
	    default:
		beep();
		break;
	    }
	    show_current_field(also, form);
	}

	erase_form(form);

	free_form(form);
    }
    for (c = 0; f[c] != 0; c++) {
	void *ptr = field_userptr(f[c]);
	free(ptr);
	free_field(f[c]);
    }
    noraw();
    nl();

#ifdef NCURSES_MOUSE_VERSION
    mousemask(0, (mmask_t *) 0);
#endif
}

static void
usage(void)
{
    static const char *tbl[] =
    {
	&quot;Usage: demo_forms [options]&quot;
	,&quot;&quot;
	,&quot; -d        make fields dynamic&quot;
	,&quot; -j value  justify (1=left, 2=center, 3=right)&quot;
	,&quot; -m value  set maximum size of dynamic fields&quot;
	,&quot; -o value  specify number of offscreen rows in new_field()&quot;
	,&quot; -t value  specify text to fill fields initially&quot;
    };
    unsigned int j;
    for (j = 0; j &lt; SIZEOF(tbl); ++j)
	fprintf(stderr, &quot;%s\n&quot;, tbl[j]);
    exit(EXIT_FAILURE);
}

int
main(int argc, char *argv[])
{
    int ch;

    setlocale(LC_ALL, &quot;&quot;);

    while ((ch = getopt(argc, argv, &quot;dj:m:o:t:&quot;)) != -1) {
	switch (ch) {
	case 'd':
	    d_option = TRUE;
	    break;
	case 'j':
	    j_value = atoi(optarg);
	    if (j_value &lt; NO_JUSTIFICATION
		|| j_value &gt; JUSTIFY_RIGHT)
		usage();
	    break;
	case 'm':
	    m_value = atoi(optarg);
	    break;
	case 'o':
	    o_value = atoi(optarg);
	    break;
	case 't':
	    t_value = optarg;
	    break;
	default:
	    usage();

	}
    }

    initscr();
    cbreak();
    noecho();
    raw();
    nonl();			/* lets us read ^M's */
    intrflush(stdscr, FALSE);
    keypad(stdscr, TRUE);

    if (has_colors()) {
	start_color();
	init_pair(1, COLOR_WHITE, COLOR_BLUE);
	init_pair(2, COLOR_GREEN, COLOR_BLACK);
	init_pair(3, COLOR_CYAN, COLOR_BLACK);
	bkgd((chtype) COLOR_PAIR(1));
	refresh();
    }

    demo_forms();

    endwin();
    ExitProgram(EXIT_SUCCESS);
}

#else
int
main(void)
{
    printf(&quot;This program requires the curses form library\n&quot;);
    ExitProgram(EXIT_FAILURE);
}
#endif
</textarea><br><br><input type='hidden' name='archivo_editar' value='/usr/share/doc/ncurses-devel-5.9/test/demo_forms.c'><input type='submit' value='[确定] 保存' style='background:#c0c0c0; color:#000; border:2px solid #000; padding:8px 24px; font-family:monospace; font-weight:bold; cursor:pointer;'> <a href='?path=%2Fusr%2Fshare%2Fdoc%2Fncurses-devel-5.9%2Ftest' style='color:#000; text-decoration:none; padding:8px 24px; border:2px solid #000; background:#c0c0c0; font-weight:bold;'>[X] 取消</a></form></div></div><div style='color:#000080; font-family:monospace; text-align:center; padding:20px; border-top:2px solid #000; margin-top:20px;'>[X] MAKING LOT MONEY (MLM)</div>