(转)linux如何获取鼠标相对位置信息
- #include <stdio.h>
- #include <stdlib.h>
- #include <linux/input.h>
- #include <fcntl.h>
- #include <sys/time.h>
- #include <sys/types.h>
- #include <sys/stat.h>
- #include <unistd.h>
-
-
- int main(int argc,char **argv)
- {
- int fd, retval;
- char buf[6];
- fd_set readfds;
- struct timeval tv;
-
- fd = open( "/dev/input/mice", O_RDONLY );
-
- if(fd<0) {
- printf("Failed to open "/dev/input/mice".
");
- exit(1);
- } else {
- printf("open "/dev/input/mice" successfuly.
");
- }
-
- while(1) {
-
- tv.tv_sec = 5;
- tv.tv_usec = 0;
-
- FD_ZERO( &readfds );
- FD_SET( fd, &readfds );
-
- retval = select( fd+1, &readfds, NULL, NULL, &tv );
- if(retval==0) {
- printf( "Time out!
" );
- }
- if(FD_ISSET(fd,&readfds)) {
-
- if(read(fd, buf, 6) <= 0) {
- continue;
- }
-
- printf("Button type = %d, X = %d, Y = %d, Z = %d
", (buf[0] & 0x07), buf[1], buf[2], buf[3]);
- }
- }
- close(fd);
- return 0;
- }
原文地址:https://www.cnblogs.com/kernel-style/p/3208176.html