porting kbhit into linux simply

See more:

C++

Linux

g++

Hi
I'm trying to port a large CPP project into linux to run on a Raspberry Pi.

One of the files PROG_WIN.CPP allows a user to interrupt the program. I have had to substitute an old Borland header

#include <conio.h>

with

#include <ncurses.h>

which I belive should be able to directly handle the getch call (though I have read getchar should be inserted) but am getting the following error using the command g++ -w -o with the g++ linking:

PROG_WIN.CPP: In function ‘int user_pressed_escape()’:
PROG_WIN.CPP:69:14: error: ‘kbhit’ was not declared in this scope

I'm presuming that there is no function kbhit in the ncurses.h file and therefore no declaration or definition of this function. Is there a quick workaround for inserting an equivalent function to kbhit?

Thanks for any ideas!

Here is the CPP code:

#include <stdio.h>
#include <string.h>
#include <math.h>
//#include <conio.h>
#include <ncurses.h>
#include <ctype.h>
#include <stdlib.h>
#include "const.h"  // System, limitation constants, typedefs, structs
#include "classes.h"  // Includes all class headers
#include "funcdefs.h" // Function prototypes

//extern int show_progress ;	//had to change this
int show_progress ;

void make_progress_window ( char * )
{
   return ;
}

void destroy_progress_window ()
{
   return ;
}

void write_progress ( char *msg )
{
   if (msg == NULL)
      return ;
   printf ( "\n%s", msg ) ;
}

void write_non_progress ( char * )
{
   return ;
}

int user_pressed_escape ()
{
   int key ;

   if (kbhit()) {         // Was a key pressed?
      key = getch () ;    // Read it if so
      while (kbhit())     // Flush key buffer in case function key
         getch () ;       // or key was held down
      return (key == KEY_ESCAPE) ;
      }
   else
      return 0 ;
}