In my C++ program I wanted to capture keypresses in command line without waiting for newline/enter being entered.
Ncurses has a command
cbreak() which does this, but I wasn't using Ncurses.
I finally found
termios.h library and
tcgetattr()/tcsetattr() commands:
#include <termios.h>
int main(int argc, char* argv[])
{
struct termios m_old_term_config;
struct termios m_new_term_config;
// Get current terminal configuration
tcgetattr(STDIN_FILENO, &m_old_term_config);
// Make a copy to restore later
m_new_term_config = m_old_term_config;
// Disable line by line input and echo
m_new_term_config.c_lflag &= ~(ICANON | ECHO);
// Or only disable line by line input
//m_new_term_config.c_lflag &= ~ICANON
tcsetattr(STDIN_FILENO, TCSANOW, &m_new_term_config);
/* Run program without line by line input and echoing */
// Restore old terminal configuration when closing program
tcsetattr(STDIN_FILENO, TCSANOW, &m_old_term_config);
}
Sources: http://linux.die.net/man/3/termios
http://en.wikibooks.org/wiki/Serial_Programming/termios
