Programmer's Guide to nCurses

By Dan Gookin

Programming the console in UNIX?
Here's simply what you need.

First, you'll get a no-nonsense instructional consultant to the nCurses model 5.5 library, taking you from simple to complicated capabilities step-by-step. Then you'll locate an A-to-Z reference of greater than a hundred seventy five nCurses features, cross-referenced and illustrated with examples. With this all-purpose nCurses reference, you?ll: study suggestions that may be used to application Linux(R), FreeBSD(R), Mac OS(R) X, or the other UNIX-based OS. software, keep watch over, and control textual content at the terminal monitor. regulate interactive I/O, set up content material into home windows at the reveal, and use colour to focus on textual content and manage info. Use a mouse to additional refine enter. Create nCurses courses utilizing your number of editors. locate 1000s of quickly, easy-to-understand programming examples.

Author Dan Gookin is understood for making know-how make experience. purchase this e-book and you'll see why.

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C 1 #include 2 three int main(void) four { five WINDOW *top,*bottom; 6 int maxx, maxy, halfx, halfy, rc; 7 char text1[] = “Lorem ipsum dolor take a seat amet, consectetuer adipiscing elit, sed diam nonummy nibh euismod tincidunt ut laoreet dolore magna aliquam erat volutpat. Ut wisi enim advert minim veniam, quis nostrud exerci tation ullamcorper suscipit lobortis nisl ut aliquip ex ea commodo consequat. ”; eight char text2[]= “Four ranking and 7 years in the past our fathers introduced forth in this continent, a brand new country, conceived in Liberty, and devoted to the proposition that every one males are created equivalent. ”; nine 10 initscr(); eleven 12 /* Get window sizes */ thirteen getmaxyx(stdscr,maxy,maxx); 14 halfy = maxy >> 1; 15 halfx = maxx >> 1; sixteen (continued) 119 120 bankruptcy 10 ■ extra Window methods directory 10-2 (continued) 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 /* construct home windows */ most sensible = newwin(halfy,maxx,0,0); backside = newwin(halfy,halfx,halfy,halfx); waddstr(top,text1); wrefresh(top); waddstr(bottom,text2); wrefresh(bottom); /* stay up for key press */ getch(); /* replica textual content from best to backside */ rc = copywin(top,bottom,0,0,0,0,4,12,FALSE); wrefresh(bottom); getch(); endwin(); go back zero; } on your “real” courses, be sure you money for mistakes whilst growing the 2 home windows in traces 19 and 20. The copywin() functionality makes use of the fake choice, so the rectangle of textual content from window best overwrites the unique contents of window backside. determine 10-3 will help you to work out the implications. determine 10-3: adorable graphical representation of copywin() Chapter 10 ■ extra Window tips undeniable previous window duplication the ultimate window copying functionality is dupwin(), which copies a complete window — dimension, textual content and all — to a brand new window, a reproduction. It’s essentially the newwin() functionality, yet makes use of an latest window as a template to create the recent window. newwin = dupwin(win) The dupwin() functionality returns a WINDOW pointer, that is then used to reference and write to the hot window (Listing 10. 3). directory 10-3: dup. c 1 2 three four five 6 7 eight nine 10 eleven 12 thirteen 14 15 sixteen 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 #include int main(void) { WINDOW *fred,*barney; initscr(); /* construct window & wait */ fred = newwin(0,0,0,0); waddstr(fred,”This is the unique window, Fred. \n”); wrefresh(fred); getch(); /* Create and express barney */ barney = dupwin(fred); waddstr(barney,”This is the Barney reproduction of window Fred. \n”); wrefresh(barney); getch(); /* return to fred */ waddstr(fred,”Nice to work out you back! \n”); wrefresh(fred); getch(); /* yet one more time to barney */ waddstr(barney,”And Barney says ‘Hi’ in addition. \n”); touchwin(barney); wrefresh(barney); endwin(); go back zero; } 121 122 bankruptcy 10 ■ extra Window methods the recent window barney is created according to fred in line sixteen. the recent window inherits fred’s textual content. Then this system bounces backward and forward among the home windows, showing info. Scrolling round Scrolling textual content doesn’t look like an incredible deal, and it isn’t — at the present time! Thirty years in the past it used to be an incredible deal — quite a bit in order that a scrolling monitor of textual content used to be patented (probably through IBM).

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