Keyboard Input

[FinnMan]

How would I go about inputing characters from a script such as CRTL + SHIFT + N etc... ? Any link refs would be wonderful too.

I've looked into expect but I'm not really concerned with the terminal response at this point so I don't think that's what I need.

Thx,
FM

 

[vgersh99]

man printf
man ascii

vlad
+----------------------------+
| #include<disclaimer.h> |
+----------------------------+

 

[FinnMan]

I knew it had to be something simple. thx!

./FM

 

[FinnMan]

Ok..I've been at this for hours now and have googled myself to death. For the life of me I can't figure out how to pass a SHIFT+ALT+N during a script. I'm unable to locate any ascii/hex values for such a combination.

Any insight would be very appreciated.

./FM

 

[FinnMan]

After some digging I've discovered that DCOP is the answer to the problem i'm dealing with....

 

[Chacalinc]

Hi FinnMann,

The keys ALT, arrows, home, end, F1-F12, etc. are a mix of keys, and CTRL-<letter> is a ASCII code 1 to &quot;don't remember below to 32&quot; for example:

if you press A, the ASCII code will be 65
if you pres <ctrl>-A, the ascii code should be 1.
if you press UP-Arrow, ASCII code will be 27 (<ESC>) plus 65 (A). You see?

do you have gnu C or cc (Unix)? Unix (HP, SUN) has the getch() function, GNU C does not have this one. try this program in c++ (g++ in Linux) it comes from linux:

//readch.cpp
#include <stdio.h>
#include <termios.h>
//#include <term.h>
//#include <curses.h>
#include <unistd.h>
/*-------------------------------------------------------*/
static struct termios initial_settings, new_settings;
static int peek_character = -1;
/*-------------------------------------------------------*/
void init_keyboard()
{
  tcgetattr( 0, &initial_settings );
  new_settings = initial_settings;
  new_settings.c_lflag &= ~ICANON;
  new_settings.c_lflag &= ~ECHO;
  new_settings.c_lflag &= ~ISIG;
  new_settings.c_cc[VMIN] = 1;
  new_settings.c_cc[VTIME] = 0;
  tcsetattr( 0, TCSANOW, &new_settings );
}

void close_keyboard()
{
  tcsetattr( 0, TCSANOW, &initial_settings );
}

int kbhit()
{
  char ch;
  int nread;
 
  if( peek_character != -1 )
    return( 1 );
  new_settings.c_cc[VMIN] = 0;
  tcsetattr( 0, TCSANOW, &new_settings );
  nread = read( 0, &ch, 1 );  
  new_settings.c_cc[VMIN] = 1;  
  tcsetattr( 0, TCSANOW, &new_settings );
  if( nread == 1 ) {
    peek_character = ch;
    return( 1 );
  }
  return( 0 );
}

int readch()
{
  char ch;
  init_keyboard();
  if( peek_character != -1 ) {
    ch = peek_character;
    peek_character = -1;
    return( ch );
  }
  read( 0, &ch, 1 );
  close_keyboard();
  return( ch );
}

int main()
{
    char c,ext;
//	init_keyboard();

 	c=readch();  //       <---- getch()
	if(c!=27)    //   <-- a Fx, Arrow or insert,home,end,etc.
		printf(&quot;Character: %c - ASCII: %d\n\n&quot;,c,c);
	else {
		ext=readch();
		printf(&quot;Characters: %d - %d\n\n&quot;,c,ext);
	}
	
// 	close_keyboard();
}
// END of program

compile with:
g++ -c readch readch.cpp

this program will let you press a key with no enter, if this key is not an alphanumeric key, the first letter is a <ESC> character, so it is a function key.

Pls, note that some keys, like Home, F5 to F12, has 3 keyx combinations, example: F5 is <ESC>+1+18 (if I remember)

take a look to this page:

http://www.matrixlist.com/pipermail/leaplist/1999-September/000630.html

Hope this help you.