Thread: move()

i have been up all night tring to creat something and finally i have created a box.. but i was wondering if you can help me out on how to make it on KEYs like for example if i was to type in the arrow key up
then i want the box to move up... i would like to know if there is anyone that can help me. ? thanx

Code:

int main()
{
  WINDOW *my_win;
  int ch, x, highlight = 1;
  int lines = 10, cols = 40;
  int height = 10 / 2, width = 10 / 2;
  initscr();
  cbreak();
  noecho();
  keypad(my_win, TRUE);

  my_win = newwin(lines , cols, height, width);
  box(my_win, 0,0);

   ch = wgetch(my_win);
                if ( ch == KEY_LEFT)
                 mvprintw(0,0,"moving",my_win);
                 wmove(my_win, 0,0);
}
    wrefresh(my_win);
    sleep(4);
    endwin();
    return 0;
  }

thanx

Hi xlordt,

I don't know what operating system and dev environment you are using but I guess it is Linux ?!? Well, I tried you run your program on my Lunix system and it doesn't work. Why? I think it's because you try to move a window with the wmove (move cursor) function in stead of the mvwin function. I'm not completely sure about this because I can't find the manual pages on my PC about this topic. Here is the code of my version:

Code:

#include <stdio.h>
#include <stdlib.h>
#include <curses.h>

int main(int argc, char *argv[])
{
	int ch = 0;
	int x = 10; 
	int y = 10;
	int xlen = 40;
	int ylen = 10;
	char msg[1024];
	WINDOW *win = NULL;

	initscr();
	if(cbreak() == ERR || noecho() == ERR || nonl() == ERR)
	{
		printf("Error initializing window\n");
		endwin();
		return -1;
	}

	if((win = newwin(ylen, xlen, y, x)) == NULL)
	{
		printf("Error creating window\n");
		endwin();
		return -1;
	}

	curs_set(0); /* make cursor invisible */

	box(win, 0, 0);

	wattron(win, A_BLINK);
	mvwprintw(win, 2, 2, "Press arrow keys to move window");
	wattroff(win, A_BLINK);

	wattron(win, A_REVERSE);
	mvwprintw(win, ylen-1, 1, " Press 'q' to quit ");
	wattroff(win, A_REVERSE);

	keypad(win, TRUE);

	while((ch = wgetch(win)) != 'q')
	{
		int tmpx = x;
		int tmpy = y;

		/* fill msg with len-2 spaces */
		sprintf(msg, "%*s", xlen - 2, "");

		/* clear previous line (You pressed...) */
		mvwprintw(win, 4, 1, msg);

		switch(ch)
		{
			case KEY_LEFT: 	tmpx--;
					break;

			case KEY_RIGHT: tmpx++;
					break;

			case KEY_UP: 	tmpy--;
					break;

			case KEY_DOWN: 	tmpy++;
					break;

			default: 	/* this can go wrong if key-stroke */
					/* contains new-line char (e.q. F2?) */
					sprintf(msg, "You pressed: [%c]", ch);
					mvwprintw(win, 4, 2, msg);
					break;
		}
		clear();
		if(mvwin(win, tmpy, tmpx) == 0)
		{
			/* move was ok, change x and y position */
			x = tmpx;
			y = tmpy;
		}
		else
		{
			/* window out of screen range, display old values */
			mvwin(win, y, x);
		}
		refresh();
	}

	clear();
	refresh();
	endwin();
	return 0;
}

Maybe it's usefull for you, maybe not. But I can tell you it was a good practice for me.

Cheers,
Monster

thanx it is also a good pracetice for me