C++ CTRL函数代码示例

/*
 * getguess:
 *	Get another guess
 */
void
getguess(void)
{
	int i;
	int ch, uch;
	bool correct;

	leaveok(stdscr, FALSE);
	for (;;) {
		move(PROMPTY, PROMPTX + sizeof("Guess: "));
		refresh();
		ch = readch();
		if (isalpha(ch)) {
			if (isupper(ch))
				ch = tolower(ch);
			if (Guessed[ch - 'a'])
				mvprintw(MESGY, MESGX, "Already guessed '%c'", ch);
			else
				break;
		}
		else if (ch == CTRL('D'))
			die(0);
		else
			mvprintw(MESGY, MESGX, "Not a valid guess: '%s'",
				unctrl(ch));
	}
	leaveok(stdscr, TRUE);
	move(MESGY, MESGX);
	clrtoeol();

	Guessed[ch - 'a'] = TRUE;
	correct = FALSE;
	uch = toupper(ch);
	for (i = 0; Word[i] != '\0'; i++) {
		if (Word[i] == ch) {
			Known[i] = ch;
			correct = TRUE;
		} else if (Word[i] == uch) {
			Known[i] = uch;
			correct = TRUE;
		}
	}
	if (!correct)
		Errors++;
}

/*
 * get_line:
 *      Reads the next line up to '\n' or EOF.  Multiple spaces are
 *	compressed to one space; a space is inserted before a ','
 */
char *
get_line(void)
{
	size_t pos;
	int c, oy, ox;
	WINDOW *oscr;

	oscr = stdscr;
	stdscr = Msgwin;
	getyx(stdscr, oy, ox);
	refresh();
	/* loop reading in the string, and put it in a temporary buffer */
	for (pos = 0; (c = readchar()) != '\n'; clrtoeol(), refresh()) {
			if (c == erasechar()) {	/* process erase character */
				if (pos > 0) {
					int i;

					pos--;
					for (i = strlen(unctrl(linebuf[pos])); i; i--)
						addch('\b');
				}
				continue;
			} else
				if (c == killchar()) {	/* process kill
							 * character */
					pos = 0;
					move(oy, ox);
					continue;
				} else
					if (pos == 0 && c == ' ')
						continue;
		if (pos >= LINESIZE - 1 || !(isprint(c) || c == ' '))
			putchar(CTRL('G'));
		else {
			if (islower(c))
				c = toupper(c);
			linebuf[pos++] = c;
			addstr(unctrl(c));
			Mpos++;
		}
	}
	linebuf[pos] = '\0';
	stdscr = oscr;
	return (linebuf);
}

/* 
 * called by the messages dispatcher when the file dialog is focused
 */
static int wdg_file_get_msg(struct wdg_object *wo, int key, struct wdg_mouse_event *mouse)
{
   WDG_WO_EXT(struct wdg_file_handle, ww);

   /* handle the message */
   switch (key) {
         
      case KEY_MOUSE:
         /* is the mouse event within our edges ? */
         if (wenclose(ww->win, mouse->y, mouse->x)) {
            wdg_set_focus(wo);
            /* pass it to the menu */
            if (wdg_file_driver(wo, key, mouse) != WDG_E_SUCCESS)
               wdg_file_redraw(wo);
         } else 
            return -WDG_E_NOTHANDLED;
         break;

      case KEY_RETURN:
      case KEY_DOWN:
      case KEY_UP:
      case KEY_PPAGE:
      case KEY_NPAGE:
         /* move only if focused */
         if (wo->flags & WDG_OBJ_FOCUSED) {
            if (wdg_file_driver(wo, key, mouse) != WDG_E_SUCCESS)
               wdg_file_redraw(wo);
         } else
            return -WDG_E_NOTHANDLED;
         break;
        
      case KEY_ESC:
      case CTRL('Q'):
         wdg_destroy_object(&wo);
         wdg_redraw_all();
         break;
         
      /* message not handled */
      default:
         return -WDG_E_NOTHANDLED;
         break;
   }
  
   return WDG_E_SUCCESS;
}

/*
 * readch;
 *	Read a character from the input
 */
int
readch(void)
{
	int	cnt;
	char	ch;

	cnt = 0;
	for (;;) {
		if (read(STDIN_FILENO, &ch, sizeof ch) <= 0) {
			if (++cnt > 100)
				die(0);
		} else
			if (ch == CTRL('L')) {
				wrefresh(curscr);
				mvcur(0, 0, curscr->_cury, curscr->_curx);
			} else
				return ch;
	}
}

static void curses_manage_filters(void)
{
   if (!wdg_filters) {
      wdg_create_object(&wdg_filters, WDG_LIST, WDG_OBJ_WANT_FOCUS);
   }
   wdg_set_size(wdg_filters, 1, 2, -1, SYSMSG_WIN_SIZE - 1);
   wdg_set_title(wdg_filters, "Select a filter...", WDG_ALIGN_LEFT);
   wdg_set_color(wdg_filters, WDG_COLOR_SCREEN, EC_COLOR);
   wdg_set_color(wdg_filters, WDG_COLOR_WINDOW, EC_COLOR);
   wdg_set_color(wdg_filters, WDG_COLOR_BORDER, EC_COLOR_BORDER);
   wdg_set_color(wdg_filters, WDG_COLOR_FOCUS, EC_COLOR_FOCUS);
   wdg_set_color(wdg_filters, WDG_COLOR_TITLE, EC_COLOR_TITLE);
   wdg_list_select_callback(wdg_filters, curses_select_filter);
   wdg_add_destroy_key(wdg_filters, CTRL('Q'), NULL);

   wdg_draw_object(wdg_filters);
   wdg_set_focus(wdg_filters);
   refresh_filter_list();
}

/*
 * readch;
 *	Read a character from the input
 */
readch()
{
	register int	cnt, r;
	auto char	ch;

	cnt = 0;
	for (;;) {
		if (read(0, &ch, sizeof ch) <= 0)
		{
			if (++cnt > 100)
				die();
		}
		else if (ch == CTRL(L)) {
			wrefresh(curscr);
			mvcur(0, 0, curscr->_cury, curscr->_curx);
		}
		else
			return ch;
	}
}

/*
 * readch;
 *	Read a character from the input
 */
char
readch(void)
{
	int cnt;
	char ch;
	int x, y;

	cnt = 0;
	for (;;) {
		if (read(STDIN_FILENO, &ch, sizeof(ch)) <= 0) {
			if (++cnt > 100)
				die(0);
		} else if (ch == CTRL('L')) {
			wrefresh(curscr);
			getyx(curscr, y, x);
			mvcur(0, 0, y, x);
		} else
			return ch;
	}
}

CPaymentsPage::CPaymentsPage(CFCMDB& oDB, int nMemberID)
	: CPropertyPage(IDD_PAYMENTS_PAGE)
	, m_oDB(oDB)
	, m_nMemberID(nMemberID)
	, m_oTmpSubs(m_oDB.m_oMembers, true)
	, m_lvGrid(this)
{
	DEFINE_CTRL_TABLE
		CTRL(IDC_PAYMENTS,	&m_lvGrid)
	END_CTRL_TABLE

	DEFINE_GRAVITY_TABLE
		CTRLGRAV(IDC_PAYMENTS, LEFT_EDGE, TOP_EDGE, RIGHT_EDGE, BOTTOM_EDGE)
	END_GRAVITY_TABLE

	// Find all the payments for this member.
	CResultSet oRS = m_oDB.m_oSubs.Select(CWhereCmp(CSubs::MEMBER_ID, CWhereCmp::EQUALS, m_nMemberID));

	for (size_t i = 0; i < oRS.Count(); i++)
	{
		CRow& oCurRow = oRS[i];
		CRow& oCpyRow = m_oTmpSubs.CreateRow();
		CRow* pItmRow = m_oDB.m_oBalSheet.SelectRow(CBalSheet::ID, oCurRow[CSubs::ITEM_ID].ToValue());

		ASSERT(pItmRow != NULL);

		// Copy data.
		oCpyRow[CTmpSubs::ITEM_ID]   = oCurRow[CSubs::ITEM_ID];
		oCpyRow[CTmpSubs::MEMBER_ID] = oCurRow[CSubs::MEMBER_ID];
		oCpyRow[CTmpSubs::FEE]       = oCurRow[CSubs::FEE];
		oCpyRow[CTmpSubs::PAID]      = oCurRow[CSubs::PAID];
		oCpyRow[CTmpSubs::ITEM_DATE] = pItmRow->Field(CBalSheet::DATE);
		oCpyRow[CTmpSubs::ITEM_NAME] = pItmRow->Field(CBalSheet::NAME);

		// Insert into tmp table.
		m_oTmpSubs.InsertRow(oCpyRow, false);
	}

	// Initialise the grid.
	m_lvGrid.Columns(NUM_COLUMNS, Columns);
}

/*
 * mon_execute:
 *	Execute a single monitor command
 */
void
mon_execute(PLAYER *pp)
{
	char	ch;

	ch = pp->p_cbuf[pp->p_ncount++];

	switch (ch) {
	  case CTRL('L'):
		/* Redraw messed-up screen */
		sendcom(pp, REDRAW);
		break;
	  case 'q':
		/* Quit client */
		(void) strlcpy(pp->p_death, "| Quit |", sizeof pp->p_death);
		break;
	  default:
		/* Ignore everything else */
		;
	}
}

static int
gdb_getc(void)
{
	int c;

	do
		c = gdb_cur->gdb_getc();
	while (c == -1);

	if (c == CTRL('C')) {
		printf("Received ^C; trying to switch back to ddb.\n");

		if (kdb_dbbe_select("ddb") != 0)
			printf("The ddb backend could not be selected.\n");
		else {
			printf("using longjmp, hope it works!\n");
			kdb_reenter();
		}
	}
	return (c);
}

/*
 * the auto-refreshing list of connections
 */
void curses_show_connections(void)
{
   DEBUG_MSG("curses_show_connections");

   /* if the object already exist, set the focus to it */
   if (wdg_connections) {
      wdg_set_focus(wdg_connections);
      return;
   }
   
   wdg_create_object(&wdg_connections, WDG_DYNLIST, WDG_OBJ_WANT_FOCUS);
   
   wdg_set_title(wdg_connections, "Live connections:", WDG_ALIGN_LEFT);
   wdg_set_size(wdg_connections, 1, 2, -1, SYSMSG_WIN_SIZE - 1);
   wdg_set_color(wdg_connections, WDG_COLOR_SCREEN, EC_COLOR);
   wdg_set_color(wdg_connections, WDG_COLOR_WINDOW, EC_COLOR);
   wdg_set_color(wdg_connections, WDG_COLOR_BORDER, EC_COLOR_BORDER);
   wdg_set_color(wdg_connections, WDG_COLOR_FOCUS, EC_COLOR_FOCUS);
   wdg_set_color(wdg_connections, WDG_COLOR_TITLE, EC_COLOR_TITLE);
   wdg_draw_object(wdg_connections);
 
   wdg_set_focus(wdg_connections);

   /* set the list print callback */
   wdg_dynlist_print_callback(wdg_connections, conntrack_print);
   
   /* set the select callback */
   wdg_dynlist_select_callback(wdg_connections, curses_connection_data);
  
   /* add the callback on idle to refresh the profile list */
   wdg_add_idle_callback(refresh_connections);

   /* add the destroy callback */
   wdg_add_destroy_key(wdg_connections, CTRL('Q'), curses_kill_connections);

   wdg_dynlist_add_callback(wdg_connections, 'd', curses_connection_detail);
   wdg_dynlist_add_callback(wdg_connections, 'k', curses_connection_kill);
   wdg_dynlist_add_callback(wdg_connections, 'x', curses_connection_purge);
   wdg_dynlist_add_callback(wdg_connections, ' ', curses_connection_help);
}

int 
main()
{
    fd_set fds;

    /* Adjust the terminal slightly before the handler is installed. Disable
     * canonical mode processing and set the input character time flag to be
     * non-blocking.
     */
    if( tcgetattr(STDIN_FILENO, &term) < 0 ) {
        perror("tcgetattr");
        exit(1);
    }
    old_lflag = term.c_lflag;
    old_vtime = term.c_cc[VTIME];
    term.c_lflag &= ~ICANON;
    term.c_cc[VTIME] = 1;
    /* COMMENT LINE BELOW - see above */
    if( tcsetattr(STDIN_FILENO, TCSANOW, &term) < 0 ) {
        perror("tcsetattr");
        exit(1);
    }

    rl_add_defun("change-prompt", change_prompt, CTRL('t'));
    rl_callback_handler_install(get_prompt(), process_line);

    while(1) {
      FD_ZERO(&fds);
      FD_SET(fileno(stdin), &fds);

      if( select(FD_SETSIZE, &fds, NULL, NULL, NULL) < 0) {
        perror("select");
        exit(1);
      }

      if( FD_ISSET(fileno(stdin), &fds) ) {
        rl_callback_read_char();
      }
    }
}

/* 
 * called by the messages dispatcher when the menu is focused
 */
static int wdg_input_get_msg(struct wdg_object *wo, int key, struct wdg_mouse_event *mouse)
{
   WDG_WO_EXT(struct wdg_input_handle, ww);

   WDG_DEBUG_MSG("keypress get msg: %d", key);
   
   /* handle the message */
   switch (key) {
         
      case KEY_MOUSE:
         /* is the mouse event within our edges ? */
         if (wenclose(ww->win, mouse->y, mouse->x)) {
            wdg_set_focus(wo);
            /* redraw the menu */
            wdg_input_redraw(wo);
         } else {
            return -WDG_E_NOTHANDLED;
         }
         break;
      
      case KEY_ESC:
      case CTRL('Q'):
         wdg_destroy_object(&wo);
         wdg_redraw_all();
         return WDG_EFINISHED;
         break;

      /* message not handled */
      default:
         if (wo->flags & WDG_OBJ_FOCUSED) {
            return wdg_input_driver(wo, key, mouse);
         } else {
            return -WDG_E_NOTHANDLED;
         }
         break;
   }
   
   return WDG_E_SUCCESS;
}

/*
 * readchar:
 *	Reads and returns a character, checking for gross input errors
 */
int
readchar(void)
{
	int cnt;
	char c;

over:
	cnt = 0;
	while (read(STDIN_FILENO, &c, sizeof(char)) <= 0)
		if (cnt++ > 100) {	/* if we are getting infinite EOFs */
			bye();		/* quit the game */
			exit(1);
		}
	if (c == CTRL('L')) {
		wrefresh(curscr);
		goto over;
	}
	if (c == '\r')
		return ('\n');
	else
		return (c);
}

/*
 * plugin management
 */
static void curses_plugin_mgmt(void)
{
   DEBUG_MSG("curses_plugin_mgmt");
   
   /* create the array for the list widget */
   curses_create_plug_array();
   
   /* if the object already exist, set the focus to it */
   if (wdg_plugin) {
      /* set the new array */
      wdg_list_set_elements(wdg_plugin, wdg_plugin_elements);
      return;
   }
   
   wdg_create_object(&wdg_plugin, WDG_LIST, WDG_OBJ_WANT_FOCUS);
   
   wdg_set_size(wdg_plugin, 1, 2, -1, SYSMSG_WIN_SIZE - 1);
   wdg_set_title(wdg_plugin, "Select a plugin...", WDG_ALIGN_LEFT);
   wdg_set_color(wdg_plugin, WDG_COLOR_SCREEN, EC_COLOR);
   wdg_set_color(wdg_plugin, WDG_COLOR_WINDOW, EC_COLOR);
   wdg_set_color(wdg_plugin, WDG_COLOR_BORDER, EC_COLOR_BORDER);
   wdg_set_color(wdg_plugin, WDG_COLOR_FOCUS, EC_COLOR_FOCUS);
   wdg_set_color(wdg_plugin, WDG_COLOR_TITLE, EC_COLOR_TITLE);

  
   /* set the elements */
   wdg_list_set_elements(wdg_plugin, wdg_plugin_elements);
   
   /* add the destroy callback */
   wdg_add_destroy_key(wdg_plugin, CTRL('Q'), curses_plug_destroy);
  
   /* add the callback */
   wdg_list_select_callback(wdg_plugin, curses_select_plugin);
   wdg_list_add_callback(wdg_plugin, ' ', curses_plugin_help);
     
   wdg_draw_object(wdg_plugin);
   
   wdg_set_focus(wdg_plugin);
}