help with ncurses

[rakesh_01]

Guys,

I need some help with ncurses.

#include <stdio.h>
#include <termios.h>
#include <unistd.h>
#include <time.h>
#include <curses.h>

int current_getch;
int doloop = 1;
static WINDOW *mainwnd;
static WINDOW *screen;
WINDOW *my_win;

int now_sec, now_min, now_hour, now_day, now_wday, now_month, now_year;
time_t now;
struct tm *now_tm;

void screen_init(void)
{
   mainwnd = initscr();
   noecho();
   cbreak();
   nodelay(mainwnd, TRUE);
   refresh(); // 1)
   wrefresh(mainwnd);
   screen = newwin(20, 45, 5, 5);
   box(screen, ACS_VLINE, ACS_HLINE);
}

static void update_display(void) {
   curs_set(0);
   mvwprintw(screen,1,15,"_________");
   mvwprintw(screen,2,2,"USERNAME");
   mvwprintw(screen,2,14,"|_________|");
   mvwprintw(screen,4,15,"__________");
   mvwprintw(screen,5,2,"PASSWORD");
   mvwprintw(screen,5,14,"|__________|");
   mvwprintw(screen,7,6,"TIME: %d:%d:%d", now_hour, now_min, now_sec);
   mvwprintw(screen,9,6,"DATE: %d-%d-%d", now_day, now_month, now_year);
   mvwprintw(screen,11,6,"PRESS e TO END");
   wrefresh(screen);
   refresh();
}

void screen_end(void)
{
   endwin();
}

void maketime(void) 
    {
        // Get the current date/time
        now = time (NULL);
        now_tm = localtime (&now);
        now_sec = now_tm->tm_sec;
        now_min = now_tm->tm_min;
        now_hour = now_tm->tm_hour;
        now_day = now_tm->tm_mday;
        now_wday = now_tm->tm_wday;
        now_month = now_tm->tm_mon + 1;
        now_year = now_tm->tm_year + 1900;
        }

int main(void)
  {
   screen_init();
   while (doloop)
     {
      current_getch = getch();
      if (current_getch == 101)
        {
         doloop = 0;
        }
      maketime();
      update_display();
      sleep(1);
      }
   screen_end();
   printf("program ended successfully\n");
   return 0;
  }

This code gives the below output





┌───────────────────────────────────────────┐
│ _________ │
│ USERNAME |_________| │
│ │
│ __________ │
│ PASSWORD |__________| │
│ |
│ TIME: 0:50:33 │
│ │
│ DATE: 29-8-2009 │
│ │
│ PRESS e TO END │
│ │
│ │
│ │
│ │
│ │
│ │
│ │
└───────────────────────────────────────────┘



Pardon me for the poor bordering, but this program only draws a few borders but doesnt produce an actual textbox.I would like to know how to input text in a actual textbox and save it to a file.

Thanks.

[MK27]

You don't need a text box. You position the cursor, write the prompt ("Password: ") if necessary, turn echo back on so you can see what you are typing, getstr(), turn echo off again...

        char response[64]
	mvprintw(5,2,"Password: ");
	echo();
	getstr(response);
	noecho();

If you want the inputted text to stand out from everything else, use color sets -- sandwich getstr() with attron() attroff calls. Eg, these two are the inverse of each other:

        start_color();
	init_pair(1, COLOR_MAGENTA,COLOR_BLACK);
	init_pair(2, COLOR_BLACK,COLOR_MAGENTA);
	attron(COLOR_PAIR(2));
	printw("hello world");
	attroff(COLOR_PAIR(2));

[rakesh_01]

Thanks,

I managed to come up with this program after a few changes

#include <stdio.h>
#include <termios.h>
#include <unistd.h>
#include <time.h>
#include <curses.h>

char user[64],password[64];
int current_getch;
int doloop = 1;
static WINDOW *mainwnd;
static WINDOW *screen;
WINDOW *my_win;

int now_sec, now_min, now_hour, now_day, now_wday, now_month, now_year;
time_t now;
struct tm *now_tm;
 
  void screen_init(void)
  {
   mainwnd = initscr();
   noecho();
   cbreak();
   nodelay(mainwnd, TRUE);
   refresh(); // 1)
   wrefresh(mainwnd);
   screen = newwin(20, 45, 5, 5);
   box(screen, ACS_VLINE, ACS_HLINE);
  }

  static void update_display(void)
  {
   curs_set(0);
   mvwprintw(screen,2,6,"TIME: %d:%d:%d",now_hour, now_min, now_sec);
   mvwprintw(screen,4,6,"DATE: %d-%d-%d", now_day, now_month, now_year);
   mvwprintw(screen,5,2,"USERNAME");
   echo();
   mvwgetnstr(screen,5,12,user,12);
   mvwprintw(screen,7,2,"PASSWORD");
   echo();
   mvwgetnstr(screen,7,12,password,8);
   mvwprintw(screen,11,6,"PRESS E TO END");
   wrefresh(screen);
   refresh();
    }

  void screen_end(void)
  {
   endwin();
  }

  void maketime(void)
  {
        // Get the current date/time
        now = time (NULL);
        now_tm = localtime (&now);
        now_sec = now_tm->tm_sec;
        now_min = now_tm->tm_min;
        now_hour = now_tm->tm_hour;
        now_day = now_tm->tm_mday;
        now_wday = now_tm->tm_wday;
        now_month = now_tm->tm_mon + 1;
        now_year = now_tm->tm_year + 1900;

  }

  int main(void)
  {
   screen_init();
   while (doloop)
     {
      current_getch = getch();
      if (current_getch == 69)
        {
         doloop = 0;
        }
      maketime();
      update_display();
      sleep(1);
      }
    screen_end();
    printf("program ended successfully\n");
    return 0;
     }

But I want the password to display only ******* even if I input ssssss.
It will be nice if you could help me out with that.