Check keypress in C++ on Linux

by

Try this:-

#include <stdio.h>
#include <stdlib.h>
#include <sys/time.h>
#include <sys/types.h>
#include <unistd.h>
#include <fcntl.h>
#include <termios.h>

int main()
{
    struct termios oldSettings, newSettings;

    tcgetattr( fileno( stdin ), &oldSettings );
    newSettings = oldSettings;
    newSettings.c_lflag &= (~ICANON & ~ECHO);
    tcsetattr( fileno( stdin ), TCSANOW, &newSettings );    

    while ( 1 )
    {
        fd_set set;
        struct timeval tv;

        tv.tv_sec = 10;
        tv.tv_usec = 0;

        FD_ZERO( &set );
        FD_SET( fileno( stdin ), &set );

        int res = select( fileno( stdin )+1, &set, NULL, NULL, &tv );

        if( res > 0 )
        {
            char c;
            printf( "Input available\n" );
            read( fileno( stdin ), &c, 1 );
        }
        else if( res < 0 )
        {
            perror( "select error" );
            break;
        }
        else
        {
            printf( "Select timeout\n" );
        }
    }

    tcsetattr( fileno( stdin ), TCSANOW, &oldSettings );
    return 0;
}

From here

More Related Contents:

  1. What’s the difference between 'gcc -g' and 'gcc -g3'?
  2. How to allocate memory dynamically for class using new in C++?
  3. C++ IDE for Linux? [closed]
  4. Using kbhit() and getch() on Linux
  5. Linux: Executing child process with piped stdin/stdout
  6. How do you find what version of libstdc++ library is installed on your linux machine?
  7. C++ compiling on Windows and Linux: ifdef switch [duplicate]
  8. Difference between shared objects (.so), static libraries (.a), and DLL’s (.so)?
  9. C++: Safe to use longjmp and setjmp?
  10. How can I execute external commands in C++/Linux?
  11. Child process receives parent’s SIGINT
  12. How can I set the baud rate to 307,200 on Linux?
  13. linux perf: how to interpret and find hotspots
  14. How to update a printed message in terminal without reprinting
  15. Complete C++ i18n gettext() “hello world” example
  16. Linking problems due to symbols with abi::cxx11?
  17. fork() and output
  18. How to name a thread in Linux? [duplicate]
  19. How do I clear the console in BOTH Windows and Linux using C++
  20. Possible causes for Boost not being found by CMake in certain situations?
  21. Where are the man pages for C++? [closed]
  22. C++ Boost ASIO simple periodic timer?
  23. Efficiently reading a very large text file in C++
  24. Why infinite recursion leads to seg fault
  25. Forcing or preventing use of a particular minor version of libstdc++
  26. How to perform atomic operations on Linux that work on x86, arm, GCC and icc?
  27. Large 2D array gives segmentation fault
  28. _GLIBCXX_USE_CXX11_ABI, GCC 4.8 and ABI compatibility
  29. Undefined reference to process(std::__cxx11::basic_string … ) when compiling affdex linux sample applications
  30. Why do I see 400x outlier timings when calling clock_gettime repeatedly?

Leave a Comment