在Linux/input.h中定义了以下结构体类型，用于标准按键的编码操作：
Struct input_evnet{
Struct timeval time; //按键时间
_u16 type;//类型
_u16 code;//模拟成什么按键码
_u32 value;//按下还是释放
}
EV_KEY:表示键盘；EV_REL表示相对坐标；EV_ABS表示绝对坐标
若事件类型为EV_KEY,code为按键的键值码，vaule为0表示释放，value为1表示按下；若事件类型为EV_REL,code为REL_X(表示鼠标的X轴方向)或者REL_Y(表示鼠标的Y轴方向)。
模拟鼠标输入
#include <string.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <Linux/input.h>
#include <stdio.h>
#include <sys/time.h>
#include <sys/types.h>
#include <unistd.h>
/*
*模拟鼠标轨迹球
*/
void simulate_mouse(int fd, int value)
{
struct input_event event;
memset(&event, 0, sizeof(event));
gettimeofday(&event.time, NULL);
event.type = EV_REL;
event.code = REL_X;//鼠标x轴方向
event.value = value;//x轴方向相对位移
write(fd, &event, sizeof(event));//写入
event.type = EV_REL;
event.code = REL_Y;//鼠标y轴方向
event.value = value;//y轴方向相对位移
write(fd, &event, sizeof(event));//写入
event.type = EV_SYN;//同步
event.code = SYN_REPORT;
event.value = 0;
write(fd, &event, sizeof(event));
}
/*
*模拟鼠标单击，先按下后释放
*/
void simulate_mouse_click(int fd,int value){
struct input_event event;
memset(&event, 0, sizeof(event));
gettimeofday(&event.time, NULL);
event.type = EV_KEY;
event.code = value;
event.value = 1;
if(write(fd,&event,sizeof(event)) < 0){
LOGE("mouse key write error.\n");
}
event.type = EV_SYN;
event.code = SYN_REPORT;
event.value = 0;
write(fd, &event, sizeof(event));
event.type = EV_KEY;
event.code = value;
event.value = 0;
if(write(fd,&event,sizeof(event)) < 0){
LOGE("mouse key write error.\n");
}
event.type = EV_SYN;
event.code = SYN_REPORT;
event.value = 0;
write(fd, &event, sizeof(event));
return;
}
int main(void)
{
int fd_mouse;
int value = 0;
fd_mouse = open("/dev/input/event2", O_RDWR);//打开设备节点
if (fd_mouse <= 0)
{
printf("error open mouse\n");
return -2;
}
while (1)
{
value = 0;
for (value = 0; value < 10; value++)
{
simulate_mouse(fd_mouse, value);
usleep(20*1000);
}
getchar();
for (value = 0; value > -10; value--)
{
simulate_mouse(fd_mouse, value);
usleep(20*1000);
}
getchar();
}
simulate_mouse_click(fd_mouse,BTN_LEFT);//点击鼠标左键
close(fd_mouse);
return 0;
}