Thread: Directional arrows

Speaking of this I never got the dirctionbuttons to work (using GCC 1-redhat linux) even though I included the ncurses libary. This funktion should do it : Keypad(stdscr,TRUE); but I can't see any differnt befour and after I used it still get "case value out of range" when I try to compile my code. (When I try to look for the dircitionbuttons being pressed).

(And I read the faq)

I made this program to play around with to learn the ncurses libary I'll post it.

Code:

#include <stdio.h>
#include <ncurses.h>

int main (void){
	WINDOW * win;
	char ch;
	int i=1,j=1;

	initscr ();
	keypad (stdscr,TRUE);
	hafedelay (1); */found a better way now just have to learn to fork ()*/
	noecho ();
	
	win=newwin(25,25,1,1);
	wborder (win,0,0,0,0,0,0,0,0);
	wmove(win,i,j);
	refresh ();
	wrefresh(win);

	while(ch != q){
		ch=getch ();
		switch (ch){
			case KEY_DOWN:
				i--;
				wmove(win,i,j);
				refresh ();
				wrefresh (win);
				break;
			case KEY_UP:
				i++;
				wmove(win,i,j);
				refresh ();
				wrefresh (win);
				break:
			}
		}
	delwin (win);
	endwin();
	}

this is the code which doesn't work.

(also the text editor I use doesn't for some reson let me copy past into netscape so I wrote it looking at the other code, there may be some typos.)

okey, do I need to change to q to the askii value instad? (the while loop)

okey

thx a ton for the help

the program still doesn't work like it should, it's suposed to move the marker when you press arrow up and down but nothing happens....

Code:

case KEY_DOWN:
     i++;
...

and

Code:

case KEY_UP:
     i--;

instead of:

Code:

case KEY_DOWN:
     i--;
....
case KEY_UP:
     i++;
...

alrady done that, no effect.

still doesn't work. and it compile fine here, that semi colon was just a typo in the posting.

and it runs, makes the window but the keys (expect q) has no effect and the hafedelay (1); was for some sort of keyboard polling (so that the program doesn't stop on the getch () ) no good way but as I comented befour I should use a fork and execlp and a pipe to do it...

works perfectly for me...

Code:

#include <stdio.h>
#include <ncurses.h>

int main (void)
{
  WINDOW *win;
  int ch;
  int i = 1, j = 1;

  initscr ();
  keypad (stdscr, TRUE);

  win = newwin (25, 25, 1, 1);
  wborder (win, 0, 0, 0, 0, 0, 0, 0, 0);
  wmove (win, i, j);
  refresh ();
  wrefresh (win);

  while (ch != 'q')
    {
      ch = getch ();
      switch (ch)
        {
        case KEY_DOWN:
          i++;
          wmove (win, i, j);
          refresh ();
          wrefresh (win);
          break;
        case KEY_UP:
          i--;
          wmove (win, i, j);
          refresh ();
          wrefresh (win);
        break;
        }
    }
  delwin (win);
  endwin ();
  return 0;
}

compiled as such: gcc -o prog prog.c -Wall -ansi -pedantic -lncurses
is it halfdelay you are after? ($man 3 halfdelay)

See the Linux FAQ for non-blocking input.

actouly it isn't, it's moving the curser I'm after.

Originally posted by Shogun
actouly it isn't, it's moving the curser I'm after.

Yeah... I was thinking halfdelay() instead of the incorrect hafedelay()...

Don't know what to tell ya... moving the cursor works just fine over here....

still doesn't work

(tryed to compile it adding -ansi -pedantic)

this is strange when I tryed to copy/past the code you posted and compile it it worked although it is the very same code I got..... :really confussed: