console15.txt

来自「linux/kd.h文件中介绍了ioctl函数能够使用的命令」· 文本 代码 · 共 49 行

Example:

	#include <stdio.h>
	#include <fcntl.h>
	#include <unistd.h>
	#include <sys/stat.h>
	#include <linux/kd.h>
	#include <sys/types.h>
	#include <sys/ioctl.h>

	#define ERROR -1

	void main()
	{
          int fd;
          register int i;

          struct kbkeycode keycode;

	  if ((fd = open("/dev/console", O_NOCTTY)) == ERROR) {
	     perror("open");
	     exit(ERROR);
	  }

	  printf("w00w00!\n\n");

          keycode.scancode = 1; /* Scancode to convert to keycode. */

          while(1) {

             if (keycode.scancode > 255) {
                putchar('\n');
                close(fd);
                exit(0);
             }

             if (ioctl(fd, KDGETKEYCODE, &keycode) == ERROR) {
                keycode.scancode++;
                continue;
 	     }

             printf("Keycode: %d (from scan code %d)\n", 
                    keycode.keycode, keycode.scancode);

             keycode.scancode++;

          }

      }