直接上代码。后续再补充分析。
这个是android源码中 getevent 命令的源码。
位于源码的目录：system/core/toolbox/
>>getevent.c
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include <dirent.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/inotify.h>
#include <sys/limits.h>
#include <sys/poll.h>
#include <linux/input.h>
#include <errno.h>
#include "getevent.h"
static struct pollfd *ufds;
static char **device_names;
static int nfds;
enum {
PRINT_DEVICE_ERRORS = 1U << 0,
PRINT_DEVICE = 1U << 1,
PRINT_DEVICE_NAME = 1U << 2,
PRINT_DEVICE_INFO = 1U << 3,
PRINT_VERSION = 1U << 4,
PRINT_POSSIBLE_EVENTS = 1U << 5,
PRINT_INPUT_PROPS = 1U << 6,
PRINT_HID_DESCRIPTOR = 1U << 7,
PRINT_ALL_INFO = (1U << 8) - 1,
PRINT_LABELS = 1U << 16,
};
static const char *get_label(const struct label *labels, int value)
{
while(labels->name && value != labels->value) {
labels++;
}
return labels->name;
}
static int print_input_props(int fd)
{
uint8_t bits[INPUT_PROP_CNT / 8];
int i, j;
int res;
int count;
const char *bit_label;
printf(" input props:\n");
res = ioctl(fd, EVIOCGPROP(sizeof(bits)), bits);
if(res < 0) {
printf(" <not available\n");
return 1;
}
count = 0;
for(i = 0; i < res; i++) {
for(j = 0; j < 8; j++) {
if (bits[i] & 1 << j) {
bit_label = get_label(input_prop_labels, i * 8 + j);
if(bit_label)
printf(" %s\n", bit_label);
else
printf(" %04x\n", i * 8 + j);
count++;
}
}
}
if (!count)
printf(" <none>\n");
return 0;
}
static int print_possible_events(int fd, int print_flags)
{
uint8_t *bits = NULL;
ssize_t bits_size = 0;
const char* label;
int i, j, k;
int res, res2;
struct label* bit_labels;
const char *bit_label;
printf(" events:\n");
for(i = EV_KEY; i <= EV_MAX; i++) { // skip EV_SYN since we cannot query its available codes
int count = 0;
while(1) {
res = ioctl(fd, EVIOCGBIT(i, bits_size), bits);
if(res < bits_size)
break;
bits_size = res + 16;
bits = realloc(bits, bits_size * 2);
if(bits == NULL) {
fprintf(stderr, "failed to allocate buffer of size %d\n", (int)bits_size);
return 1;
}
}
res2 = 0;
switch(i) {
case EV_KEY:
res2 = ioctl(fd, EVIOCGKEY(res), bits + bits_size);
label = "KEY";
bit_labels = key_labels;
break;
case EV_REL:
label = "REL";
bit_labels = rel_labels;
break;
case EV_ABS:
label = "ABS";
bit_labels = abs_labels;
break;
case EV_MSC:
label = "MSC";
bit_labels = msc_labels;
break;
case EV_LED:
res2 = ioctl(fd, EVIOCGLED(res), bits + bits_size);
label = "LED";
bit_labels = led_labels;
break;
case EV_SND:
res2 = ioctl(fd, EVIOCGSND(res), bits + bits_size);
label = "SND";
bit_labels = snd_labels;
break;
case EV_SW:
res2 = ioctl(fd, EVIOCGSW(bits_size), bits + bits_size);
label = "SW ";
bit_labels = sw_labels;
break;
case EV_REP:
label = "REP";
bit_labels = rep_labels;
break;
case EV_FF:
label = "FF ";
bit_labels = ff_labels;
break;
case EV_PWR:
label = "PWR";
bit_labels = NULL;
break;
case EV_FF_STATUS:
label = "FFS";
bit_labels = ff_status_labels;
break;
default:
res2 = 0;
label = "???";
bit_labels = NULL;
}
for(j = 0; j < res; j++) {
for(k = 0; k < 8; k++)
if(bits[j] & 1 << k) {
char down;
if(j < res2 && (bits[j + bits_size] & 1 << k))
down = '*';
else
down = ' ';
if(count == 0)
printf(" %s (%04x):", label, i);
else if((count & (print_flags & PRINT_LABELS ? 0x3 : 0x7)) == 0 || i == EV_ABS)
printf("\n ");
if(bit_labels && (print_flags & PRINT_LABELS)) {
bit_label = get_label(bit_labels, j * 8 + k);
if(bit_label)
printf(" %.20s%c%*s", bit_label, down, 20 - strlen(bit_label), "");
else
printf(" %04x%c ", j * 8 + k, down);
} else {
printf(" %04x%c", j * 8 + k, down);
}
if(i == EV_ABS) {
struct input_absinfo abs;
if(ioctl(fd, EVIOCGABS(j * 8 + k), &abs) == 0) {
printf(" : value %d, min %d, max %d, fuzz %d, flat %d, resolution %d",
abs.value, abs.minimum, abs.maximum, abs.fuzz, abs.flat,
abs.resolution);
}
}
count++;
}
}
if(count)
printf("\n");
}
free(bits);
return 0;
}
static void print_event(int type, int code, int value, int print_flags)
{
const char *type_label, *code_label, *value_label;
if (print_flags & PRINT_LABELS) {
type_label = get_label(ev_labels, type);
code_label = NULL;
value_label = NULL;
switch(type) {
case EV_SYN:
code_label = get_label(syn_labels, code);
break;
case EV_KEY:
code_label = get_label(key_labels, code);
value_label = get_label(key_value_labels, value);
break;
case EV_REL:
code_label = get_label(rel_labels, code);
break;
case EV_ABS:
code_label = get_label(abs_labels, code);
switch(code) {
case ABS_MT_TOOL_TYPE:
value_label = get_label(mt_tool_labels, value);
}
break;
case EV_MSC:
code_label = get_label(msc_labels, code);
break;
case EV_LED:
code_label = get_label(led_labels, code);
break;
case EV_SND:
code_label = get_label(snd_labels, code);
break;
case EV_SW:
code_label = get_label(sw_labels, code);
break;
case EV_REP:
code_label = get_label(rep_labels, code);
break;
case EV_FF:
code_label = get_label(ff_labels, code);
break;
case EV_FF_STATUS:
code_label = get_label(ff_status_labels, code);
break;
}
if (type_label)
printf("%-12.12s", type_label);
else
printf("%04x ", type);
if (code_label)
printf(" %-20.20s", code_label);
else
printf(" %04x ", code);
if (value_label)
printf(" %-20.20s", value_label);
else
printf(" %08x ", value);
} else {
printf("%04x %04x %08x", type, code, value);
}
}
static void print_hid_descriptor(int bus, int vendor, int product)
{
const char *dirname = "/sys/kernel/debug/hid";
char prefix[16];
DIR *dir;
struct dirent *de;
char filename[PATH_MAX];
FILE *file;
char line[2048];
snprintf(prefix, sizeof(prefix), "%04X:%04X:%04X.", bus, vendor, product);
dir = opendir(dirname);
if(dir == NULL)
return;
while((de = readdir(dir))) {
if (strstr(de->d_name, prefix) == de->d_name) {
snprintf(filename, sizeof(filename), "%s/%s/rdesc", dirname, de->d_name);
file = fopen(filename, "r");
if (file) {
printf(" HID descriptor: %s\n\n", de->d_name);
while (fgets(line, sizeof(line), file)) {
fputs(" ", stdout);
fputs(line, stdout);
}
fclose(file);
puts("");
}
}
}
closedir(dir);
}
static int open_device(const char *device, int print_flags)
{
int version;
int fd;
struct pollfd *new_ufds;
char **new_device_names;
char name[80];
char location[80];
char idstr[80];
struct input_id id;
fd = open(device, O_RDWR);
if(fd < 0) {
if(print_flags & PRINT_DEVICE_ERRORS)
fprintf(stderr, "could not open %s, %s\n", device, strerror(errno));
return -1;
}
if(ioctl(fd, EVIOCGVERSION, &version)) {
if(print_flags & PRINT_DEVICE_ERRORS)
fprintf(stderr, "could not get driver version for %s, %s\n", device, strerror(errno));
return -1;
}
if(ioctl(fd, EVIOCGID, &id)) {
if(print_flags & PRINT_DEVICE_ERRORS)
fprintf(stderr, "could not get driver id for %s, %s\n", device, strerror(errno));
return -1;
}
name[sizeof(name) - 1] = '\0';
location[sizeof(location) - 1] = '\0';
idstr[sizeof(idstr) - 1] = '\0';
if(ioctl(fd, EVIOCGNAME(sizeof(name) - 1), &name) < 1) {
//fprintf(stderr, "could not get device name for %s, %s\n", device, strerror(errno));
name[0] = '\0';
}
if(ioctl(fd, EVIOCGPHYS(sizeof(location) - 1), &location) < 1) {
//fprintf(stderr, "could not get location for %s, %s\n", device, strerror(errno));
location[0] = '\0';
}
if(ioctl(fd, EVIOCGUNIQ(sizeof(idstr) - 1), &idstr) < 1) {
//fprintf(stderr, "could not get idstring for %s, %s\n", device, strerror(errno));
idstr[0] = '\0';
}
new_ufds = realloc(ufds, sizeof(ufds[0]) * (nfds + 1));
if(new_ufds == NULL) {
fprintf(stderr, "out of memory\n");
return -1;
}
ufds = new_ufds;
new_device_names = realloc(device_names, sizeof(device_names[0]) * (nfds + 1));
if(new_device_names == NULL) {
fprintf(stderr, "out of memory\n");
return -1;
}
device_names = new_device_names;
if(print_flags & PRINT_DEVICE)
printf("add device %d: %s\n", nfds, device);
if(print_flags & PRINT_DEVICE_INFO)
printf(" bus: %04x\n"
" vendor %04x\n"
" product %04x\n"
" version %04x\n",
id.bustype, id.vendor, id.product, id.version);
if(print_flags & PRINT_DEVICE_NAME)
printf(" name: \"%s\"\n", name);
if(print_flags & PRINT_DEVICE_INFO)
printf(" location: \"%s\"\n"
" id: \"%s\"\n", location, idstr);
if(print_flags & PRINT_VERSION)
printf(" version: %d.%d.%d\n",
version >> 16, (version >> 8) & 0xff, version & 0xff);
if(print_flags & PRINT_POSSIBLE_EVENTS) {
print_possible_events(fd, print_flags);
}
if(print_flags & PRINT_INPUT_PROPS) {
print_input_props(fd);
}
if(print_flags & PRINT_HID_DESCRIPTOR) {
print_hid_descriptor(id.bustype, id.vendor, id.product);
}
ufds[nfds].fd = fd;
ufds[nfds].events = POLLIN;
device_names[nfds] = strdup(device);
nfds++;
return 0;
}
int close_device(const char *device, int print_flags)
{
int i;
for(i = 1; i < nfds; i++) {
if(strcmp(device_names[i], device) == 0) {
int count = nfds - i - 1;
if(print_flags & PRINT_DEVICE)
printf("remove device %d: %s\n", i, device);
free(device_names[i]);
memmove(device_names + i, device_names + i + 1, sizeof(device_names[0]) * count);
memmove(ufds + i, ufds + i + 1, sizeof(ufds[0]) * count);
nfds--;
return 0;
}
}
if(print_flags & PRINT_DEVICE_ERRORS)
fprintf(stderr, "remote device: %s not found\n", device);
return -1;
}
static int read_notify(const char *dirname, int nfd, int print_flags)
{
int res;
char devname[PATH_MAX];
char *filename;
char event_buf[512];
int event_size;
int event_pos = 0;
struct inotify_event *event;
res = read(nfd, event_buf, sizeof(event_buf));
if(res < (int)sizeof(*event)) {
if(errno == EINTR)
return 0;
fprintf(stderr, "could not get event, %s\n", strerror(errno));
return 1;
}
//printf("got %d bytes of event information\n", res);
strcpy(devname, dirname);
filename = devname + strlen(devname);
*filename++ = '/';
while(res >= (int)sizeof(*event)) {
event = (struct inotify_event *)(event_buf + event_pos);
//printf("%d: %08x \"%s\"\n", event->wd, event->mask, event->len ? event->name : "");
if(event->len) {
strcpy(filename, event->name);
if(event->mask & IN_CREATE) {
open_device(devname, print_flags);
}
else {
close_device(devname, print_flags);
}
}
event_size = sizeof(*event) + event->len;
res -= event_size;
event_pos += event_size;
}
return 0;
}
static int scan_dir(const char *dirname, int print_flags)
{
char devname[PATH_MAX];
char *filename;
DIR *dir;
struct dirent *de;
dir = opendir(dirname);
if(dir == NULL)
return -1;
strcpy(devname, dirname);
filename = devname + strlen(devname);
*filename++ = '/';
while((de = readdir(dir))) {
if(de->d_name[0] == '.' &&
(de->d_name[1] == '\0' ||
(de->d_name[1] == '.' && de->d_name[2] == '\0')))
continue;
strcpy(filename, de->d_name);
open_device(devname, print_flags);
}
closedir(dir);
return 0;
}
static void usage(int argc, char *argv[])
{
fprintf(stderr, "Usage: %s [-t] [-n] [-s switchmask] [-S] [-v [mask]] [-d] [-p] [-i] [-l] [-q] [-c count] [-r] [device]\n", argv[0]);
fprintf(stderr, " -t: show time stamps\n");
fprintf(stderr, " -n: don't print newlines\n");
fprintf(stderr, " -s: print switch states for given bits\n");
fprintf(stderr, " -S: print all switch states\n");
fprintf(stderr, " -v: verbosity mask (errs=1, dev=2, name=4, info=8, vers=16, pos. events=32, props=64)\n");
fprintf(stderr, " -d: show HID descriptor, if available\n");
fprintf(stderr, " -p: show possible events (errs, dev, name, pos. events)\n");
fprintf(stderr, " -i: show all device info and possible events\n");
fprintf(stderr, " -l: label event types and names in plain text\n");
fprintf(stderr, " -q: quiet (clear verbosity mask)\n");
fprintf(stderr, " -c: print given number of events then exit\n");
fprintf(stderr, " -r: print rate events are received\n");
}
int getevent_main(int argc, char *argv[])
{
int c;
int i;
int res;
int pollres;
int get_time = 0;
int print_device = 0;
char *newline = "\n";
uint16_t get_switch = 0;
struct input_event event;
int version;
int print_flags = 0;
int print_flags_set = 0;
int dont_block = -1;
int event_count = 0;
int sync_rate = 0;
int64_t last_sync_time = 0;
const char *device = NULL;
const char *device_path = "/dev/input";
opterr = 0;
do {
c = getopt(argc, argv, "tns:Sv::dpilqc:rh");
if (c == EOF)
break;
switch (c) {
case 't':
get_time = 1;
break;
case 'n':
newline = "";
break;
case 's':
get_switch = strtoul(optarg, NULL, 0);
if(dont_block == -1)
dont_block = 1;
break;
case 'S':
get_switch = ~0;
if(dont_block == -1)
dont_block = 1;
break;
case 'v':
if(optarg)
print_flags |= strtoul(optarg, NULL, 0);
else
print_flags |= PRINT_DEVICE | PRINT_DEVICE_NAME | PRINT_DEVICE_INFO | PRINT_VERSION;
print_flags_set = 1;
break;
case 'd':
print_flags |= PRINT_HID_DESCRIPTOR;
break;
case 'p':
print_flags |= PRINT_DEVICE_ERRORS | PRINT_DEVICE
| PRINT_DEVICE_NAME | PRINT_POSSIBLE_EVENTS | PRINT_INPUT_PROPS;
print_flags_set = 1;
if(dont_block == -1)
dont_block = 1;
break;
case 'i':
print_flags |= PRINT_ALL_INFO;
print_flags_set = 1;
if(dont_block == -1)
dont_block = 1;
break;
case 'l':
print_flags |= PRINT_LABELS;
break;
case 'q':
print_flags_set = 1;
break;
case 'c':
event_count = atoi(optarg);
dont_block = 0;
break;
case 'r':
sync_rate = 1;
break;
case '?':
fprintf(stderr, "%s: invalid option -%c\n",
argv[0], optopt);
case 'h':
usage(argc, argv);
exit(1);
}
} while (1);
if(dont_block == -1)
dont_block = 0;
if (optind + 1 == argc) {
device = argv[optind];
optind++;
}
if (optind != argc) {
usage(argc, argv);
exit(1);
}
nfds = 1;
ufds = calloc(1, sizeof(ufds[0]));
ufds[0].fd = inotify_init();
ufds[0].events = POLLIN;
if(device) {
if(!print_flags_set)
print_flags |= PRINT_DEVICE_ERRORS;
res = open_device(device, print_flags);
if(res < 0) {
return 1;
}
} else {
if(!print_flags_set)
print_flags |= PRINT_DEVICE_ERRORS | PRINT_DEVICE | PRINT_DEVICE_NAME;
print_device = 1;
res = inotify_add_watch(ufds[0].fd, device_path, IN_DELETE | IN_CREATE);
if(res < 0) {
fprintf(stderr, "could not add watch for %s, %s\n", device_path, strerror(errno));
return 1;
}
res = scan_dir(device_path, print_flags);
if(res < 0) {
fprintf(stderr, "scan dir failed for %s\n", device_path);
return 1;
}
}
if(get_switch) {
for(i = 1; i < nfds; i++) {
uint16_t sw;
res = ioctl(ufds[i].fd, EVIOCGSW(1), &sw);
if(res < 0) {
fprintf(stderr, "could not get switch state, %s\n", strerror(errno));
return 1;
}
sw &= get_switch;
printf("%04x%s", sw, newline);
}
}
if(dont_block)
return 0;
while(1) {
pollres = poll(ufds, nfds, -1);
//printf("poll %d, returned %d\n", nfds, pollres);
if(ufds[0].revents & POLLIN) {
read_notify(device_path, ufds[0].fd, print_flags);
}
for(i = 1; i < nfds; i++) {
if(ufds[i].revents) {
if(ufds[i].revents & POLLIN) {
res = read(ufds[i].fd, &event, sizeof(event));
if(res < (int)sizeof(event)) {
fprintf(stderr, "could not get event\n");
return 1;
}
if(get_time) {
printf("[%8ld.%06ld] ", event.time.tv_sec, event.time.tv_usec);
}
if(print_device)
printf("%s: ", device_names[i]);
print_event(event.type, event.code, event.value, print_flags);
if(sync_rate && event.type == 0 && event.code == 0) {
int64_t now = event.time.tv_sec * 1000000LL + event.time.tv_usec;
if(last_sync_time)
printf(" rate %lld", 1000000LL / (now - last_sync_time));
last_sync_time = now;
}
printf("%s", newline);
if(event_count && --event_count == 0)
return 0;
}
}
}
}
return 0;
}
>> getevent.h
#include <linux/input.h>
struct label {
const char *name;
int value;
};
#define LABEL(constant) { #constant, constant }
#define LABEL_END { NULL, -1 }
static struct label input_prop_labels[] = {
LABEL(INPUT_PROP_POINTER),
LABEL(INPUT_PROP_DIRECT),
LABEL(INPUT_PROP_BUTTONPAD),
LABEL(INPUT_PROP_SEMI_MT),
LABEL_END,
};
static struct label ev_labels[] = {
LABEL(EV_SYN),
LABEL(EV_KEY),
LABEL(EV_REL),
LABEL(EV_ABS),
LABEL(EV_MSC),
LABEL(EV_SW),
LABEL(EV_LED),
LABEL(EV_SND),
LABEL(EV_REP),
LABEL(EV_FF),
LABEL(EV_PWR),
LABEL(EV_FF_STATUS),
LABEL_END,
};
static struct label syn_labels[] = {
LABEL(SYN_REPORT),
LABEL(SYN_CONFIG),
LABEL(SYN_MT_REPORT),
LABEL(SYN_DROPPED),
LABEL_END,
};
static struct label key_labels[] = {
LABEL(KEY_RESERVED),
LABEL(KEY_ESC),
LABEL(KEY_1),
LABEL(KEY_2),
LABEL(KEY_3),
LABEL(KEY_4),
LABEL(KEY_5),
LABEL(KEY_6),
LABEL(KEY_7),
LABEL(KEY_8),
LABEL(KEY_9),
LABEL(KEY_0),
LABEL(KEY_MINUS),
LABEL(KEY_EQUAL),
LABEL(KEY_BACKSPACE),
LABEL(KEY_TAB),
LABEL(KEY_Q),
LABEL(KEY_W),
LABEL(KEY_E),
LABEL(KEY_R),
LABEL(KEY_T),
LABEL(KEY_Y),
LABEL(KEY_U),
LABEL(KEY_I),
LABEL(KEY_O),
LABEL(KEY_P),
LABEL(KEY_LEFTBRACE),
LABEL(KEY_RIGHTBRACE),
LABEL(KEY_ENTER),
LABEL(KEY_LEFTCTRL),
LABEL(KEY_A),
LABEL(KEY_S),
LABEL(KEY_D),
LABEL(KEY_F),
LABEL(KEY_G),
LABEL(KEY_H),
LABEL(KEY_J),
LABEL(KEY_K),
LABEL(KEY_L),
LABEL(KEY_SEMICOLON),
LABEL(KEY_APOSTROPHE),
LABEL(KEY_GRAVE),
LABEL(KEY_LEFTSHIFT),
LABEL(KEY_BACKSLASH),
LABEL(KEY_Z),
LABEL(KEY_X),
LABEL(KEY_C),
LABEL(KEY_V),
LABEL(KEY_B),
LABEL(KEY_N),
LABEL(KEY_M),
LABEL(KEY_COMMA),
LABEL(KEY_DOT),
LABEL(KEY_SLASH),
LABEL(KEY_RIGHTSHIFT),
LABEL(KEY_KPASTERISK),
LABEL(KEY_LEFTALT),
LABEL(KEY_SPACE),
LABEL(KEY_CAPSLOCK),
LABEL(KEY_F1),
LABEL(KEY_F2),
LABEL(KEY_F3),
LABEL(KEY_F4),
LABEL(KEY_F5),
LABEL(KEY_F6),
LABEL(KEY_F7),
LABEL(KEY_F8),
LABEL(KEY_F9),
LABEL(KEY_F10),
LABEL(KEY_NUMLOCK),
LABEL(KEY_SCROLLLOCK),
LABEL(KEY_KP7),
LABEL(KEY_KP8),
LABEL(KEY_KP9),
LABEL(KEY_KPMINUS),
LABEL(KEY_KP4),
LABEL(KEY_KP5),
LABEL(KEY_KP6),
LABEL(KEY_KPPLUS),
LABEL(KEY_KP1),
LABEL(KEY_KP2),
LABEL(KEY_KP3),
LABEL(KEY_KP0),
LABEL(KEY_KPDOT),
LABEL(KEY_ZENKAKUHANKAKU),
LABEL(KEY_102ND),
LABEL(KEY_F11),
LABEL(KEY_F12),
LABEL(KEY_RO),
LABEL(KEY_KATAKANA),
LABEL(KEY_HIRAGANA),
LABEL(KEY_HENKAN),
LABEL(KEY_KATAKANAHIRAGANA),
LABEL(KEY_MUHENKAN),
LABEL(KEY_KPJPCOMMA),
LABEL(KEY_KPENTER),
LABEL(KEY_RIGHTCTRL),
LABEL(KEY_KPSLASH),
LABEL(KEY_SYSRQ),
LABEL(KEY_RIGHTALT),
LABEL(KEY_LINEFEED),
LABEL(KEY_HOME),
LABEL(KEY_UP),
LABEL(KEY_PAGEUP),
LABEL(KEY_LEFT),
LABEL(KEY_RIGHT),
LABEL(KEY_END),
LABEL(KEY_DOWN),
LABEL(KEY_PAGEDOWN),
LABEL(KEY_INSERT),
LABEL(KEY_DELETE),
LABEL(KEY_MACRO),
LABEL(KEY_MUTE),
LABEL(KEY_VOLUMEDOWN),
LABEL(KEY_VOLUMEUP),
LABEL(KEY_POWER),
LABEL(KEY_KPEQUAL),
LABEL(KEY_KPPLUSMINUS),
LABEL(KEY_PAUSE),
LABEL(KEY_SCALE),
LABEL(KEY_KPCOMMA),
LABEL(KEY_HANGEUL),
LABEL(KEY_HANGUEL),
LABEL(KEY_HANJA),
LABEL(KEY_YEN),
LABEL(KEY_LEFTMETA),
LABEL(KEY_RIGHTMETA),
LABEL(KEY_COMPOSE),
LABEL(KEY_STOP),
LABEL(KEY_AGAIN),
LABEL(KEY_PROPS),
LABEL(KEY_UNDO),
LABEL(KEY_FRONT),
LABEL(KEY_COPY),
LABEL(KEY_OPEN),
LABEL(KEY_PASTE),
LABEL(KEY_FIND),
LABEL(KEY_CUT),
LABEL(KEY_HELP),
LABEL(KEY_MENU),
LABEL(KEY_CALC),
LABEL(KEY_SETUP),
LABEL(KEY_SLEEP),
LABEL(KEY_WAKEUP),
LABEL(KEY_FILE),
LABEL(KEY_SENDFILE),
LABEL(KEY_DELETEFILE),
LABEL(KEY_XFER),
LABEL(KEY_PROG1),
LABEL(KEY_PROG2),
LABEL(KEY_WWW),
LABEL(KEY_MSDOS),
LABEL(KEY_COFFEE),
LABEL(KEY_SCREENLOCK),
LABEL(KEY_DIRECTION),
LABEL(KEY_CYCLEWINDOWS),
LABEL(KEY_MAIL),
LABEL(KEY_BOOKMARKS),
LABEL(KEY_COMPUTER),
LABEL(KEY_BACK),
LABEL(KEY_FORWARD),
LABEL(KEY_CLOSECD),
LABEL(KEY_EJECTCD),
LABEL(KEY_EJECTCLOSECD),
LABEL(KEY_NEXTSONG),
LABEL(KEY_PLAYPAUSE),
LABEL(KEY_PREVIOUSSONG),
LABEL(KEY_STOPCD),
LABEL(KEY_RECORD),
LABEL(KEY_REWIND),
LABEL(KEY_PHONE),
LABEL(KEY_ISO),
LABEL(KEY_CONFIG),
LABEL(KEY_HOMEPAGE),
LABEL(KEY_REFRESH),
LABEL(KEY_EXIT),
LABEL(KEY_MOVE),
LABEL(KEY_EDIT),
LABEL(KEY_SCROLLUP),
LABEL(KEY_SCROLLDOWN),
LABEL(KEY_KPLEFTPAREN),
LABEL(KEY_KPRIGHTPAREN),
LABEL(KEY_NEW),
LABEL(KEY_REDO),
LABEL(KEY_F13),
LABEL(KEY_F14),
LABEL(KEY_F15),
LABEL(KEY_F16),
LABEL(KEY_F17),
LABEL(KEY_F18),
LABEL(KEY_F19),
LABEL(KEY_F20),
LABEL(KEY_F21),
LABEL(KEY_F22),
LABEL(KEY_F23),
LABEL(KEY_F24),
LABEL(KEY_PLAYCD),
LABEL(KEY_PAUSECD),
LABEL(KEY_PROG3),
LABEL(KEY_PROG4),
LABEL(KEY_DASHBOARD),
LABEL(KEY_SUSPEND),
LABEL(KEY_CLOSE),
LABEL(KEY_PLAY),
LABEL(KEY_FASTFORWARD),
LABEL(KEY_BASSBOOST),
LABEL(KEY_PRINT),
LABEL(KEY_HP),
LABEL(KEY_CAMERA),
LABEL(KEY_SOUND),
LABEL(KEY_QUESTION),
LABEL(KEY_EMAIL),
LABEL(KEY_CHAT),
LABEL(KEY_SEARCH),
LABEL(KEY_CONNECT),
LABEL(KEY_FINANCE),
LABEL(KEY_SPORT),
LABEL(KEY_SHOP),
LABEL(KEY_ALTERASE),
LABEL(KEY_CANCEL),
LABEL(KEY_BRIGHTNESSDOWN),
LABEL(KEY_BRIGHTNESSUP),
LABEL(KEY_MEDIA),
LABEL(KEY_SWITCHVIDEOMODE),
LABEL(KEY_KBDILLUMTOGGLE),
LABEL(KEY_KBDILLUMDOWN),
LABEL(KEY_KBDILLUMUP),
LABEL(KEY_SEND),
LABEL(KEY_REPLY),
LABEL(KEY_FORWARDMAIL),
LABEL(KEY_SAVE),
LABEL(KEY_DOCUMENTS),
LABEL(KEY_BATTERY),
LABEL(KEY_BLUETOOTH),
LABEL(KEY_WLAN),
LABEL(KEY_UWB),
LABEL(KEY_UNKNOWN),
LABEL(KEY_VIDEO_NEXT),
LABEL(KEY_VIDEO_PREV),
LABEL(KEY_BRIGHTNESS_CYCLE),
LABEL(KEY_BRIGHTNESS_ZERO),
LABEL(KEY_DISPLAY_OFF),
LABEL(KEY_WIMAX),
LABEL(KEY_RFKILL),
LABEL(BTN_0),
LABEL(BTN_1),
LABEL(BTN_2),
LABEL(BTN_3),
LABEL(BTN_4),
LABEL(BTN_5),
LABEL(BTN_6),
LABEL(BTN_7),
LABEL(BTN_8),
LABEL(BTN_9),
LABEL(BTN_LEFT),
LABEL(BTN_RIGHT),
LABEL(BTN_MIDDLE),
LABEL(BTN_SIDE),
LABEL(BTN_EXTRA),
LABEL(BTN_FORWARD),
LABEL(BTN_BACK),
LABEL(BTN_TASK),
LABEL(BTN_JOYSTICK),
LABEL(BTN_TRIGGER),
LABEL(BTN_THUMB),
LABEL(BTN_THUMB2),
LABEL(BTN_TOP),
LABEL(BTN_TOP2),
LABEL(BTN_PINKIE),
LABEL(BTN_BASE),
LABEL(BTN_BASE2),
LABEL(BTN_BASE3),
LABEL(BTN_BASE4),
LABEL(BTN_BASE5),
LABEL(BTN_BASE6),
LABEL(BTN_DEAD),
LABEL(BTN_A),
LABEL(BTN_B),
LABEL(BTN_C),
LABEL(BTN_X),
LABEL(BTN_Y),
LABEL(BTN_Z),
LABEL(BTN_TL),
LABEL(BTN_TR),
LABEL(BTN_TL2),
LABEL(BTN_TR2),
LABEL(BTN_SELECT),
LABEL(BTN_START),
LABEL(BTN_MODE),
LABEL(BTN_THUMBL),
LABEL(BTN_THUMBR),
LABEL(BTN_TOOL_PEN),
LABEL(BTN_TOOL_RUBBER),
LABEL(BTN_TOOL_BRUSH),
LABEL(BTN_TOOL_PENCIL),
LABEL(BTN_TOOL_AIRBRUSH),
LABEL(BTN_TOOL_FINGER),
LABEL(BTN_TOOL_MOUSE),
LABEL(BTN_TOOL_LENS),
LABEL(BTN_TOUCH),
LABEL(BTN_STYLUS),
LABEL(BTN_STYLUS2),
LABEL(BTN_TOOL_DOUBLETAP),
LABEL(BTN_TOOL_TRIPLETAP),
LABEL(BTN_TOOL_QUADTAP),
LABEL(BTN_GEAR_DOWN),
LABEL(BTN_GEAR_UP),
LABEL(KEY_OK),
LABEL(KEY_SELECT),
LABEL(KEY_GOTO),
LABEL(KEY_CLEAR),
LABEL(KEY_POWER2),
LABEL(KEY_OPTION),
LABEL(KEY_INFO),
LABEL(KEY_TIME),
LABEL(KEY_VENDOR),
LABEL(KEY_ARCHIVE),
LABEL(KEY_PROGRAM),
LABEL(KEY_CHANNEL),
LABEL(KEY_FAVORITES),
LABEL(KEY_EPG),
LABEL(KEY_PVR),
LABEL(KEY_MHP),
LABEL(KEY_LANGUAGE),
LABEL(KEY_TITLE),
LABEL(KEY_SUBTITLE),
LABEL(KEY_ANGLE),
LABEL(KEY_ZOOM),
LABEL(KEY_MODE),
LABEL(KEY_KEYBOARD),
LABEL(KEY_SCREEN),
LABEL(KEY_PC),
LABEL(KEY_TV),
LABEL(KEY_TV2),
LABEL(KEY_VCR),
LABEL(KEY_VCR2),
LABEL(KEY_SAT),
LABEL(KEY_SAT2),
LABEL(KEY_CD),
LABEL(KEY_TAPE),
LABEL(KEY_RADIO),
LABEL(KEY_TUNER),
LABEL(KEY_PLAYER),
LABEL(KEY_TEXT),
LABEL(KEY_DVD),
LABEL(KEY_AUX),
LABEL(KEY_MP3),
LABEL(KEY_AUDIO),
LABEL(KEY_VIDEO),
LABEL(KEY_DIRECTORY),
LABEL(KEY_LIST),
LABEL(KEY_MEMO),
LABEL(KEY_CALENDAR),
LABEL(KEY_RED),
LABEL(KEY_GREEN),
LABEL(KEY_YELLOW),
LABEL(KEY_BLUE),
LABEL(KEY_CHANNELUP),
LABEL(KEY_CHANNELDOWN),
LABEL(KEY_FIRST),
LABEL(KEY_LAST),
LABEL(KEY_AB),
LABEL(KEY_NEXT),
LABEL(KEY_RESTART),
LABEL(KEY_SLOW),
LABEL(KEY_SHUFFLE),
LABEL(KEY_BREAK),
LABEL(KEY_PREVIOUS),
LABEL(KEY_DIGITS),
LABEL(KEY_TEEN),
LABEL(KEY_TWEN),
LABEL(KEY_VIDEOPHONE),
LABEL(KEY_GAMES),
LABEL(KEY_ZOOMIN),
LABEL(KEY_ZOOMOUT),
LABEL(KEY_ZOOMRESET),
LABEL(KEY_WORDPROCESSOR),
LABEL(KEY_EDITOR),
LABEL(KEY_SPREADSHEET),
LABEL(KEY_GRAPHICSEDITOR),
LABEL(KEY_PRESENTATION),
LABEL(KEY_DATABASE),
LABEL(KEY_NEWS),
LABEL(KEY_VOICEMAIL),
LABEL(KEY_ADDRESSBOOK),
LABEL(KEY_MESSENGER),
LABEL(KEY_DISPLAYTOGGLE),
LABEL(KEY_SPELLCHECK),
LABEL(KEY_LOGOFF),
LABEL(KEY_DOLLAR),
LABEL(KEY_EURO),
LABEL(KEY_FRAMEBACK),
LABEL(KEY_FRAMEFORWARD),
LABEL(KEY_CONTEXT_MENU),
LABEL(KEY_MEDIA_REPEAT),
LABEL(KEY_10CHANNELSUP),
LABEL(KEY_10CHANNELSDOWN),
LABEL(KEY_IMAGES),
LABEL(KEY_DEL_EOL),
LABEL(KEY_DEL_EOS),
LABEL(KEY_INS_LINE),
LABEL(KEY_DEL_LINE),
LABEL(KEY_FN),
LABEL(KEY_FN_ESC),
LABEL(KEY_FN_F1),
LABEL(KEY_FN_F2),
LABEL(KEY_FN_F3),
LABEL(KEY_FN_F4),
LABEL(KEY_FN_F5),
LABEL(KEY_FN_F6),
LABEL(KEY_FN_F7),
LABEL(KEY_FN_F8),
LABEL(KEY_FN_F9),
LABEL(KEY_FN_F10),
LABEL(KEY_FN_F11),
LABEL(KEY_FN_F12),
LABEL(KEY_FN_1),
LABEL(KEY_FN_2),
LABEL(KEY_FN_D),
LABEL(KEY_FN_E),
LABEL(KEY_FN_F),
LABEL(KEY_FN_S),
LABEL(KEY_FN_B),
LABEL(KEY_BRL_DOT1),
LABEL(KEY_BRL_DOT2),
LABEL(KEY_BRL_DOT3),
LABEL(KEY_BRL_DOT4),
LABEL(KEY_BRL_DOT5),
LABEL(KEY_BRL_DOT6),
LABEL(KEY_BRL_DOT7),
LABEL(KEY_BRL_DOT8),
LABEL(KEY_BRL_DOT9),
LABEL(KEY_BRL_DOT10),
LABEL(KEY_NUMERIC_0),
LABEL(KEY_NUMERIC_1),
LABEL(KEY_NUMERIC_2),
LABEL(KEY_NUMERIC_3),
LABEL(KEY_NUMERIC_4),
LABEL(KEY_NUMERIC_5),
LABEL(KEY_NUMERIC_6),
LABEL(KEY_NUMERIC_7),
LABEL(KEY_NUMERIC_8),
LABEL(KEY_NUMERIC_9),
LABEL(KEY_NUMERIC_STAR),
LABEL(KEY_NUMERIC_POUND),
LABEL(KEY_CAMERA_FOCUS),
LABEL(KEY_WPS_BUTTON),
LABEL(KEY_TOUCHPAD_TOGGLE),
LABEL(KEY_TOUCHPAD_ON),
LABEL(KEY_TOUCHPAD_OFF),
LABEL(KEY_CAMERA_ZOOMIN),
LABEL(KEY_CAMERA_ZOOMOUT),
LABEL(KEY_CAMERA_UP),
LABEL(KEY_CAMERA_DOWN),
LABEL(KEY_CAMERA_LEFT),
LABEL(KEY_CAMERA_RIGHT),
LABEL(BTN_TRIGGER_HAPPY1),
LABEL(BTN_TRIGGER_HAPPY2),
LABEL(BTN_TRIGGER_HAPPY3),
LABEL(BTN_TRIGGER_HAPPY4),
LABEL(BTN_TRIGGER_HAPPY5),
LABEL(BTN_TRIGGER_HAPPY6),
LABEL(BTN_TRIGGER_HAPPY7),
LABEL(BTN_TRIGGER_HAPPY8),
LABEL(BTN_TRIGGER_HAPPY9),
LABEL(BTN_TRIGGER_HAPPY10),
LABEL(BTN_TRIGGER_HAPPY11),
LABEL(BTN_TRIGGER_HAPPY12),
LABEL(BTN_TRIGGER_HAPPY13),
LABEL(BTN_TRIGGER_HAPPY14),
LABEL(BTN_TRIGGER_HAPPY15),
LABEL(BTN_TRIGGER_HAPPY16),
LABEL(BTN_TRIGGER_HAPPY17),
LABEL(BTN_TRIGGER_HAPPY18),
LABEL(BTN_TRIGGER_HAPPY19),
LABEL(BTN_TRIGGER_HAPPY20),
LABEL(BTN_TRIGGER_HAPPY21),
LABEL(BTN_TRIGGER_HAPPY22),
LABEL(BTN_TRIGGER_HAPPY23),
LABEL(BTN_TRIGGER_HAPPY24),
LABEL(BTN_TRIGGER_HAPPY25),
LABEL(BTN_TRIGGER_HAPPY26),
LABEL(BTN_TRIGGER_HAPPY27),
LABEL(BTN_TRIGGER_HAPPY28),
LABEL(BTN_TRIGGER_HAPPY29),
LABEL(BTN_TRIGGER_HAPPY30),
LABEL(BTN_TRIGGER_HAPPY31),
LABEL(BTN_TRIGGER_HAPPY32),
LABEL(BTN_TRIGGER_HAPPY33),
LABEL(BTN_TRIGGER_HAPPY34),
LABEL(BTN_TRIGGER_HAPPY35),
LABEL(BTN_TRIGGER_HAPPY36),
LABEL(BTN_TRIGGER_HAPPY37),
LABEL(BTN_TRIGGER_HAPPY38),
LABEL(BTN_TRIGGER_HAPPY39),
LABEL(BTN_TRIGGER_HAPPY40),
LABEL_END,
};
static struct label rel_labels[] = {
LABEL(REL_X),
LABEL(REL_Y),
LABEL(REL_Z),
LABEL(REL_RX),
LABEL(REL_RY),
LABEL(REL_RZ),
LABEL(REL_HWHEEL),
LABEL(REL_DIAL),
LABEL(REL_WHEEL),
LABEL(REL_MISC),
LABEL_END,
};
static struct label abs_labels[] = {
LABEL(ABS_X),
LABEL(ABS_Y),
LABEL(ABS_Z),
LABEL(ABS_RX),
LABEL(ABS_RY),
LABEL(ABS_RZ),
LABEL(ABS_THROTTLE),
LABEL(ABS_RUDDER),
LABEL(ABS_WHEEL),
LABEL(ABS_GAS),
LABEL(ABS_BRAKE),
LABEL(ABS_HAT0X),
LABEL(ABS_HAT0Y),
LABEL(ABS_HAT1X),
LABEL(ABS_HAT1Y),
LABEL(ABS_HAT2X),
LABEL(ABS_HAT2Y),
LABEL(ABS_HAT3X),
LABEL(ABS_HAT3Y),
LABEL(ABS_PRESSURE),
LABEL(ABS_DISTANCE),
LABEL(ABS_TILT_X),
LABEL(ABS_TILT_Y),
LABEL(ABS_TOOL_WIDTH),
LABEL(ABS_VOLUME),
LABEL(ABS_MISC),
LABEL(ABS_MT_SLOT),
LABEL(ABS_MT_TOUCH_MAJOR),
LABEL(ABS_MT_TOUCH_MINOR),
LABEL(ABS_MT_WIDTH_MAJOR),
LABEL(ABS_MT_WIDTH_MINOR),
LABEL(ABS_MT_ORIENTATION),
LABEL(ABS_MT_POSITION_X),
LABEL(ABS_MT_POSITION_Y),
LABEL(ABS_MT_TOOL_TYPE),
LABEL(ABS_MT_BLOB_ID),
LABEL(ABS_MT_TRACKING_ID),
LABEL(ABS_MT_PRESSURE),
LABEL(ABS_MT_DISTANCE),
LABEL_END,
};
static struct label sw_labels[] = {
LABEL(SW_LID),
LABEL(SW_TABLET_MODE),
LABEL(SW_HEADPHONE_INSERT),
LABEL(SW_RFKILL_ALL),
LABEL(SW_RADIO),
LABEL(SW_MICROPHONE_INSERT),
LABEL(SW_DOCK),
LABEL(SW_LINEOUT_INSERT),
LABEL(SW_JACK_PHYSICAL_INSERT),
LABEL(SW_VIDEOOUT_INSERT),
LABEL(SW_CAMERA_LENS_COVER),
LABEL(SW_KEYPAD_SLIDE),
LABEL(SW_FRONT_PROXIMITY),
LABEL(SW_ROTATE_LOCK),
LABEL_END,
};
static struct label msc_labels[] = {
LABEL(MSC_SERIAL),
LABEL(MSC_PULSELED),
LABEL(MSC_GESTURE),
LABEL(MSC_RAW),
LABEL(MSC_SCAN),
LABEL_END,
};
static struct label led_labels[] = {
LABEL(LED_NUML),
LABEL(LED_CAPSL),
LABEL(LED_SCROLLL),
LABEL(LED_COMPOSE),
LABEL(LED_KANA),
LABEL(LED_SLEEP),
LABEL(LED_SUSPEND),
LABEL(LED_MUTE),
LABEL(LED_MISC),
LABEL(LED_MAIL),
LABEL(LED_CHARGING),
LABEL_END,
};
static struct label rep_labels[] = {
LABEL(REP_DELAY),
LABEL(REP_PERIOD),
LABEL_END,
};
static struct label snd_labels[] = {
LABEL(SND_CLICK),
LABEL(SND_BELL),
LABEL(SND_TONE),
LABEL_END,
};
static struct label id_labels[] = {
LABEL(ID_BUS),
LABEL(ID_VENDOR),
LABEL(ID_PRODUCT),
LABEL(ID_VERSION),
LABEL_END,
};
static struct label bus_labels[] = {
LABEL(BUS_PCI),
LABEL(BUS_ISAPNP),
LABEL(BUS_USB),
LABEL(BUS_HIL),
LABEL(BUS_BLUETOOTH),
LABEL(BUS_VIRTUAL),
LABEL(BUS_ISA),
LABEL(BUS_I8042),
LABEL(BUS_XTKBD),
LABEL(BUS_RS232),
LABEL(BUS_GAMEPORT),
LABEL(BUS_PARPORT),
LABEL(BUS_AMIGA),
LABEL(BUS_ADB),
LABEL(BUS_I2C),
LABEL(BUS_HOST),
LABEL(BUS_GSC),
LABEL(BUS_ATARI),
LABEL(BUS_SPI),
LABEL_END,
};
static struct label mt_tool_labels[] = {
LABEL(MT_TOOL_FINGER),
LABEL(MT_TOOL_PEN),
LABEL(MT_TOOL_MAX),
LABEL_END,
};
static struct label ff_status_labels[] = {
LABEL(FF_STATUS_STOPPED),
LABEL(FF_STATUS_PLAYING),
LABEL(FF_STATUS_MAX),
LABEL_END,
};
static struct label ff_labels[] = {
LABEL(FF_RUMBLE),
LABEL(FF_PERIODIC),
LABEL(FF_CONSTANT),
LABEL(FF_SPRING),
LABEL(FF_FRICTION),
LABEL(FF_DAMPER),
LABEL(FF_INERTIA),
LABEL(FF_RAMP),
LABEL(FF_SQUARE),
LABEL(FF_TRIANGLE),
LABEL(FF_SINE),
LABEL(FF_SAW_UP),
LABEL(FF_SAW_DOWN),
LABEL(FF_CUSTOM),
LABEL(FF_GAIN),
LABEL(FF_AUTOCENTER),
LABEL_END,
};
static struct label key_value_labels[] = {
{ "UP", 0 },
{ "DOWN", 1 },
{ "REPEAT", 2 },
LABEL_END,
};
相关推荐
linux下userspace code侦听GPIO硬件中断事件的方法示例代码
- **防抖（Debouncing）**: 当频繁触发的事件在一定时间内只执行一次，用于减少不必要的计算，例如用户在搜索框输入时。 - **节流（Throttling）**: 控制事件触发的频率，例如滚动事件监听，确保滚动停止后才执行...
在MATLAB开发中，事件侦听器是一种强大的工具，它允许程序对特定事件做出响应，例如数据更改或用户交互。本教程重点介绍了如何利用单个事件侦听器以及MATLAB UI（用户界面）中的Simulink Signal Viewer来增强模型的...
基于Linux的网上信息侦听与分析系统的设计与实现.pdf
在LabVIEW编程环境中，事件结构（Event Structure）是一种核心的编程机制，用于处理异步操作和用户交互。标题“Event-Conditional-Stop.zip_event_labview event”表明这个压缩包文件包含了一个与LabVIEW事件结构...
总结起来，Dojo的事件处理机制包括事件标准化、事件监听、事件传播控制以及发布/预定通信，这些功能为开发者提供了强大且灵活的工具，使得在Web开发中处理用户交互变得更加简单和高效。通过理解和掌握这些概念，你...
被动事件监听器（Passive Event Listeners）是现代Web开发中的一个重要优化策略，尤其是在构建高性能的Web应用程序时。这个概念的引入主要是为了提高页面的滚动性能和响应速度，特别是对于移动设备上的触摸事件。...
rdev一个简单的库，用于在MacOS，Windows和Linux（x11）上侦听事件并将事件发送到键盘和鼠标。 您还可以检出Enigo，这是另一个c rdev简单库，用于在MacOS，Windows和Linux（x11）上侦听事件并将事件发送到键盘和鼠标...
在本节中，我们将深入探讨事件侦听的概念及其在编程中的应用。事件侦听是ActionScript（特别是Flash和Flex）中一个重要的交互处理机制。它允许我们对用户的行为或者对象的状态变化做出响应，例如，当用户点击一个...
Spring 侦听事件 总结(xmind文件)Spring 侦听事件 总结(xmind文件)Spring 侦听事件 总结(xmind文件)Spring 侦听事件 总结(xmind文件)
【基于Linux的网上侦听系统测试设计】 在软件开发领域，尤其是涉及到操作系统级别的系统开发，测试是确保产品质量的关键环节。本文以“基于Linux的网上侦听系统”为例，探讨了如何设计并实施测试以验证其功能正确性...
在AS2中，事件侦听器的使用包含以下几个关键概念： 1. **侦听器对象（Listener Object）**：这是接收事件的对象，它可以是舞台上任何类型的实例，如影片剪辑、按钮，或者是自定义的动作脚本类实例。 2. **广播器...
在`vue-connection-listener-master`这个项目中，可能包含了实现上述功能的源代码，包括事件总线的创建、网络状态监听组件以及使用网络状态的组件。通过阅读和理解这些代码，开发者可以学习到如何在Vue.js应用中有效...
在JavaScript开发中，事件侦听器是用于处理用户或浏览器行为的关键组件。它们允许我们对网页元素进行交互，如点击按钮、提交表单或者滚动页面等。标题提到的"非常小且简单的工具类用于将事件侦听器绑定到元素"，意味...
`HookDispatcher.ts`可能是局部事件总线的实现，这种模式常用于模块化或组件库中，限制事件在特定的组件或模块范围内传播。它避免了全局事件总线可能带来的副作用，提高了代码的可维护性。 6. **事件委托（Event ...
在IT领域，多线程TCP/IP侦听器是一种常见的网络通信技术，特别是在开发服务器端应用程序时。本篇文章将深入探讨这个主题，重点关注VB.NET环境下的实现。 首先，TCP/IP（Transmission Control Protocol/Internet ...
1. **事件冒泡与捕获**：事件在AS3中有两种传播模式，冒泡和捕获。冒泡是从最具体的节点（通常是舞台上的对象）向上逐级传播到不那么具体的节点（如容器），而捕获则相反，从舞台向对象节点传播。你可以通过设置`...
- **数据链路层访问**：网络侦听通常在数据链路层实现，通过对数据链路层的直接访问，可以捕获各种类型的数据包，包括但不限于IP数据包。 #### 三、软件实现 ##### 3.1 Unix环境下的实现 - **BSD分组过滤器 (BPF)*...
Arduino事件管理器 使用事件驱动的设计是编码与周围环境交互的Arduino项目的常用方法。 EventManager是单个C ++类，为Arduino提供事件处理系统。... 为了使占用空间最小，事件队列和侦听器列表都较小
这是一项实验性功能，可帮助您在浏览器中侦听事件。 当前仅在Chrome浏览器中受支持（最终将使用其他浏览器）。 要注册事件，请调用addEventListener命令。 如果事件被调用，它将返回浏览器捕获的几乎完整的事件对象...