/dev/input/eventsでマウスを読み取るのに問題があります。

私はカーネル3.6.10でFedora 17 LXDEを使用しており、ネイティブ/dev/input/mouseXマウスの相対移動から読みたいと思います/dev/input/eventX。

マウスクリック（マウスの上、マウスの下）とイベントを表示するデータを取得しましたが、すべての相対移動データの合計値rel_*は同じです。つまり、マウスを左に動かすとなります。マウスを右に動かすと、マウスを上下に動かすのと同じ値が得られます。この値は常に = +1 ではなく、時には +2 です。rel_xrel_yrel_x = rel_y = +1rel_x = rel_y = +1

どんなアイデアがありますか？

#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <istream>
#include <unistd.h>
#include <linux/input.h>

#define MOUSEFILE "/dev/input/event2"

int main()
{
int fd;
struct input_event ie;

if((fd = open(MOUSEFILE, O_RDONLY)) == -1) {
    perror("opening device");
    exit(EXIT_FAILURE);
}

while(read(fd, &ie, sizeof(struct input_event))) {
    unsigned char *ptr = (unsigned char*)&ie;
    for(int i=0; i<sizeof(ie); i++)
        printf("%02X ", *ptr++);
    printf("\n");
}

return 0;
}

一般的な出力：

29 EB F7 50 00 00 00 00 27 6A 0C 00 00 00 00 00 02 00 01 00 01 00 00 00 
29 EB F7 50 00 00 00 00 33 6A 0C 00 00 00 00 00 00 00 00 00 00 00 00 00 
29 EB F7 50 00 00 00 00 F5 90 0C 00 00 00 00 00 02 00 00 00 01 00 00 00 
29 EB F7 50 00 00 00 00 F6 90 0C 00 00 00 00 00 02 00 01 00 01 00 00 00 
29 EB F7 50 00 00 00 00 00 91 0C 00 00 00 00 00 00 00 00 00 00 00 00 00 
29 EB F7 50 00 00 00 00 BF B7 0C 00 00 00 00 00 02 00 00 00 02 00 00 00 
29 EB F7 50 00 00 00 00 C0 B7 0C 00 00 00 00 00 02 00 01 00 02 00 00 00 
29 EB F7 50 00 00 00 00 CA B7 0C 00 00 00 00 00 00 00 00 00 00 00 00 00 
29 EB F7 50 00 00 00 00 1C D7 0C 00 00 00 00 00 02 00 00 00 01 00 00 00 
29 EB F7 50 00 00 00 00 1D D7 0C 00 00 00 00 00 02 00 01 00 01 00 00 00 
29 EB F7 50 00 00 00 00 24 D7 0C 00 00 00 00 00 00 00 00 00 00 00 00 00 
29 EB F7 50 00 00 00 00 F0 3F 0D 00 00 00 00 00 02 00 00 00 01 00 00 00 
29 EB F7 50 00 00 00 00 F1 3F 0D 00 00 00 00 00 02 00 01 00 01 00 00 00 
29 EB F7 50 00 00 00 00 FA 3F 0D 00 00 00 00 00 00 00 00 00 00 00 00 00 
29 EB F7 50 00 00 00 00 51 6A 0D 00 00 00 00 00 02 00 00 00 03 00 00 00 
29 EB F7 50 00 00 00 00 52 6A 0D 00 00 00 00 00 02 00 01 00 03 00 00 00 
29 EB F7 50 00 00 00 00 5A 6A 0D 00 00 00 00 00 00 00 00 00 00 00 00 00 

and some output when clicking a button
72 EE F7 50 00 00 00 00 10 DF 00 00 00 00 00 00 01 00 10 01 01 00 00 00 
72 EE F7 50 00 00 00 00 13 DF 00 00 00 00 00 00 02 00 00 00 01 00 00 00 
72 EE F7 50 00 00 00 00 13 DF 00 00 00 00 00 00 02 00 01 00 01 00 00 00 
72 EE F7 50 00 00 00 00 2B DF 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
72 EE F7 50 00 00 00 00 C0 AE 02 00 00 00 00 00 01 00 10 01 00 00 00 00 
72 EE F7 50 00 00 00 00 C5 AE 02 00 00 00 00 00 02 00 00 00 01 00 00 00 
72 EE F7 50 00 00 00 00 C6 AE 02 00 00 00 00 00 02 00 01 00 01 00 00 00 
72 EE F7 50 00 00 00 00 E0 AE 02 00 00 00 00 00 00 00 00 00 00 00 00 00