我尝试在Linux中控制鼠标。Xlib似乎可以工作,但是当我尝试将其与OpenCV一起使用时,它会不断返回:
Resource temporarily unavailable
所以我决定写“ / dev / psaux”。代码如下:
#include <unistd.h> #include <string.h> #include <stdio.h> #include <errno.h> #include <sys/types.h> #include <sys/stat.h> #include <fcntl.h> int main() { unsigned char a[5]={0, 0xff, 0, 0x28, 0xff}; int fp = open ("/dev/psaux", O_WRONLY); if(!fp)printf("open error:%s\n", strerror(errno)); for(int i = 0; i < 10; i++) printf("write:%d\t\t%s\n", write(fp, a, 5), strerror(errno)); close(fp); return 0; }
用以下命令编译:
gcc my_psaux.c -o my_psaux -std=gnu99 -g
运行并获得
$sudo ./my_psaux write:5 Success write:5 Success write:5 Success write:5 Success write:5 Success write:5 Success write:5 Success write:5 Success write:5 Success write:5 Success
但是鼠标不会移动。然后,我打开一个新终端,输入“ sudo cat / dev / psaux”并运行“ my_psaux”。但是我什么都没有。 什么都没有写到“ / dev / psaux”中?
有人可以帮我吗?
如果这不是控制鼠标的好方法,有人可以告诉我另一个吗?
非常感谢@R .. 提醒我一些其他方式,而不是 /dev/psaux
/dev/psaux
于是,我就/dev/input/mouse*和/dev/input/event*
/dev/input/mouse*
/dev/input/event*
通过使用
cat /proc/bus/input/devices
我得到这个:
I: Bus=0003 Vendor=0461 Product=4d81 Version=0111 N: Name="USB Optical Mouse" P: Phys=usb-0000:00:1d.0-1/input0 S: Sysfs=/devices/pci0000:00/0000:00:1d.0/usb6/6-1/6-1:1.0/input/input10 U: Uniq= H: Handlers=mouse2 event10 B: EV=17 B: KEY=70000 0 0 0 0 0 0 0 0 B: REL=143 B: MSC=10
经过测试,仅/dev/input/event10适用。代码如下:
/dev/input/event10
#include <stdio.h> #include <unistd.h> #include <linux/input.h> #include <errno.h> #include <fcntl.h> #include <sys/types.h> #include <sys/stat.h> #include <sys/time.h> int main() { struct input_event event, event_end; int fd = open("/dev/input/event10", O_RDWR); if (fd < 0) { printf("Errro open mouse:%s\n", strerror(errno)); return -1; } memset(&event, 0, sizeof(event)); memset(&event, 0, sizeof(event_end)); gettimeofday(&event.time, NULL); event.type = EV_REL; event.code = REL_X; event.value = 100; gettimeofday(&event_end.time, NULL); event_end.type = EV_SYN; event_end.code = SYN_REPORT; event_end.value = 0; for (int i=0; i<5; i++) { write(fd, &event, sizeof(event));// Move the mouse write(fd, &event_end, sizeof(event_end));// Show move sleep(1);// wait } close(fd); return 0; }