linux获取键值命令 linux获取方法 _break

linux下c语言编程，怎样扫描键盘输入并且获取键值打印编译linux获取键值命令的方法有很多linux获取键值命令，比如在编译时候将其重定向到另一个文件或者直接打开某一个文件在c中直接将参数写入该文件
如何读取linux键值，输入子系统，key，dev/input/event，dev/event ， c语言键盘/*
* Copyright 2002 Red Hat Inc., Durham, North Carolina.
*
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation on the rights to use, copy, modify, merge,
* publish, distribute, 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 (including the
* next paragraph) shall be included in all copies or substantial
* portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NON-INFRINGEMENT.IN NO EVENT SHALL RED HAT AND/OR THEIR SUPPLIERS
* 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.
*
* This is a simple test program that reads from /dev/input/event*,
* decoding events into a human readable form.
*/
/*
* Authors:
*Rickard E. (Rik) Faith faith@redhat.com
*
*/
#include stdio.h
#include stdlib.h
#include unistd.h
#include string.h
#include sys/types.h
#include fcntl.h
#include errno.h
#include time.h
#include linux/input.h
struct input_event event;
int main(int argc, char **argv)
{
charname[64];/* RATS: Use ok, but could be better */
charbuf[256] = { 0, };/* RATS: Use ok */
unsigned char mask[EV_MAX/81]; /* RATS: Use ok */
intversion;
intfd = 0;
intrc;
inti, j;
char*tmp;
#define test_bit(bit) (mask[(bit)/8](1((bit)%8)))
for (i = 0; i32; i) {
sprintf(name, "/dev/input/event%d", i);
if ((fd = open(name, O_RDONLY, 0)) = 0) {
ioctl(fd, EVIOCGVERSION, version);
ioctl(fd, EVIOCGNAME(sizeof(buf)), buf);
ioctl(fd, EVIOCGBIT(0, sizeof(mask)), mask);
printf("%s\n", name);
printf("evdev version: %d.%d.%d\n",
version16, (version8)0xff, version0xff);
printf("name: %s\n", buf);
printf("features:");
for (j = 0; jEV_MAX; j) {
if (test_bit(j)) {
const char *type = "unknown";
switch(j) {
case EV_KEY: type = "keys/buttons"; break;
case EV_REL: type = "relative";break;
case EV_ABS: type = "absolute";break;
【linux获取键值命令 linux获取方法】case EV_MSC: type = "reserved";break;
case EV_LED: type = "leds";break;
case EV_SND: type = "sound";break;
case EV_REP: type = "repeat";break;
case EV_FF:type = "feedback";break;
}
printf(" %s", type);
}
}
printf("\n");
close(fd);
}
}
if (argc1) {
sprintf(name, "/dev/input/event%d", atoi(argv[1]));
if ((fd = open(name, O_RDWR, 0)) = 0) {
printf("%s: open, fd = %d\n", name, fd);
for (i = 0; iLED_MAX; i) {
event.time.tv_sec= time(0);
event.time.tv_usec = 0;
event.type= EV_LED;
event.code= i;
event.value= https://www.04ip.com/post/0;
write(fd, event, sizeof(event));
}
while ((rc = read(fd, event, sizeof(event)))0) {
printf("%-24.24s.lu type 0xx; code 0xx;"
" value 0xx; ",
ctime(event.time.tv_sec),
event.time.tv_usec,
event.type, event.code, event.value);
switch (event.type) {
case EV_KEY:
if (event.codeBTN_MISC) {
printf("Button %d %s",
event.code0xff,
event.value ? "press" : "release");
} else {
printf("Key %d (0x%x) %s",
event.code0xff,
event.code0xff,
event.value ? "press" : "release");
}
break;
case EV_REL:
switch (event.code) {
case REL_X:tmp = "X";break;
case REL_Y:tmp = "Y";break;
case REL_HWHEEL: tmp = "HWHEEL";break;
case REL_DIAL:tmp = "DIAL";break;
case REL_WHEEL:tmp = "WHEEL";break;
case REL_MISC:tmp = "MISC";break;
default:tmp = "UNKNOWN"; break;
}
printf("Relative %s %d", tmp, event.value);
break;
case EV_ABS:
switch (event.code) {
case ABS_X:tmp = "X";break;
case ABS_Y:tmp = "Y";break;
case ABS_Z:tmp = "Z";break;
case ABS_RX:tmp = "RX";break;
case ABS_RY:tmp = "RY";break;
case ABS_RZ:tmp = "RZ";break;
case ABS_THROTTLE: tmp = "THROTTLE"; break;
case ABS_RUDDER:tmp = "RUDDER";break;
case ABS_WHEEL:tmp = "WHEEL";break;
case ABS_GAS:tmp = "GAS";break;
case ABS_BRAKE:tmp = "BRAKE";break;
case ABS_HAT0X:tmp = "HAT0X";break;
case ABS_HAT0Y:tmp = "HAT0Y";break;
case ABS_HAT1X:tmp = "HAT1X";break;
case ABS_HAT1Y:tmp = "HAT1Y";break;
case ABS_HAT2X:tmp = "HAT2X";break;
case ABS_HAT2Y:tmp = "HAT2Y";break;
case ABS_HAT3X:tmp = "HAT3X";break;
case ABS_HAT3Y:tmp = "HAT3Y";break;
case ABS_PRESSURE: tmp = "PRESSURE"; break;
case ABS_DISTANCE: tmp = "DISTANCE"; break;
case ABS_TILT_X:tmp = "TILT_X";break;
case ABS_TILT_Y:tmp = "TILT_Y";break;
case ABS_MISC:tmp = "MISC";break;
default:tmp = "UNKNOWN";break;
}
printf("Absolute %s %d", tmp, event.value);
break;
case EV_MSC: printf("Misc"); break;
case EV_LED: printf("Led");break;
case EV_SND: printf("Snd");break;
case EV_REP: printf("Rep");break;
case EV_FF:printf("FF");break;
break;
}
printf("\n");
}
printf("rc = %d, (%s)\n", rc, strerror(errno));
close(fd);
}
}
return 0;
}
注意：
#includelinux/input.h
为内核源码的头文件，注意路径，一般为kernel/include/linux/input.h
Linux上怎么在C中获取方向键键值特殊linux获取键值命令的键linux获取键值命令，如方向键，功能键等，可以使用读取普通键linux获取键值命令的方式，但是要连读两次。
Linux系统中如何用C语言编程获取方向键值.....特殊的键，如方向键，功能键等，可以使用读取普通键的方式，但是要连读两次。
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linux获取键值命令 linux获取方法

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