GetAsyncKeyState(VK_ESCAPE) in c++ Linux

[bigduck]

GetAsyncKeyState(VK_ESCAPE) can be used with windows.h but in linux how this can be used.
please don't mention std::cin.get() or getch()
because it waits for user to input a ch but GetAsyncKeyState(VK_ESCAPE) works continually.
any alternative of GetAsyncKeyState(VK_ESCAPE) in LINUX ?

[Peter87]

I'm not sure there is something exactly like GetAsyncKeyState but you should be able to read key presses without delay using the ncurses library.

[bigduck]

thanks peter
but i google and found

This way the program is dynamically linked to the ncurses library. To run it in another computer, the system must have the ncurses library installed.

any other suggestion?

[Chervil]

next line ...

If you want to avoid the trouble, you may have it statically linked.

See also
http://stackoverflow.com/questions/3514852/statically-link-ncurses-to-program

[NoXzema]

Is it for a windowed application or a console application?

[bigduck]

this will be used in linux console.
I successful written a program for windows now I want to convert my code for linux.

[Hydranix]

Can your program run as root?

A method I've used to read keypresses was to directly read /dev/input/eventN.

#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <linux/input.h>
#include <iostream>
...
void GetKeys(char* kbd_dev) 
{
  // kbd_dev should be keyboard device found in /dev/input (need root by default)
  int kbd = open(kbd_dev, O_RDONLY);
  if(kbd != -1)
  {
    input_event ie;
    while(read(kbd, &ie, sizeof(ie)))
    {
      std::cout << "Key Code: " << ie.code << "    Value: " << ie.value << "\n";
    }
    close(kbd);
  }
}

[bigduck]

my code is something like this

#include <windows.h> //works in win but doesnt in linux
#include <iostream>
void Esc();
void Start();

void Esc()
{
	//std::cout<<"press esc to exit! \n";
	if (GetAsyncKeyState(VK_ESCAPE)) // how to use such thing in linux?
	{
	return;
}
	else
	Start();
	
}

void Start()
{
	std::cout<< "hello again \n"; 
        // i want to keep seeing this msg "hello again" 
        //again and again without pressing any key just ESC to terminate
	Sleep (1000);
	Esc();
	return;
}
int main()
{
    std::cout<< "starting... press esc to exit!\n";
	Sleep (1000); //in linux we use sleep or usleep. in win s is capital
	Start();
    Esc();

    std::cout<<"exited: \n";
    Sleep (1000);

    return 0;
}