Hi All!
Suppose in the middle of a Linux session, I have pulled out the mouse (a
PS/2) cable. How do I detect that the mouse is no longer intact? I tried
the following C code, but with no result. All the time the status
remains same, whether I plug in or out the mouse cable. I also tried
writing a BIT to the device with write, but write did not complain, even
if mouse is no longer connected.
#include <sys/types.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#include <errno.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
#include <signal.h>
int main(int argc,char **argv)
{
int fd,flags,status;
/* Open the the device */
if ((fd = open("/dev/cua1", O_RDWR | O_NDELAY)) < 0) /* /dev/cua1 is
the mouse port */
{
fprintf(stderr, "%s\n",sys_errlist[errno]);
exit(1);
}
ioctl(fd, TIOCMGET, &flags);
status = (flags & TIOCM_CTS);
printf("%d\n",status);
************************ END OF CODE ************************
Could anybody help?
Madhurjya
--
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Dr. Madhurjya P. Bora
Office : Home :
Physics Department Flat-2, Unit-12
Gauhati University Gauhati University Campus
Guwahati, Assam 781 014, India. Gauhati University
Guwahati, Assam 781 014, India.
Phone : +91-361-570531 (O)
+91-361-574165 (H)
Fax : +91-361-570133
E-mail : [EMAIL PROTECTED]
[EMAIL PROTECTED]
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