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NCurses Refresh

Tags:

c

ncurses

I have a small ncurse program I'm running, but the output doesn't seem to show up unless I stick the wrefresh() in a while loop.

Is there some buffering going on or something? I tried other refresh functions in the library and fflush with stddout (which I don't think makes sense, but worth a try), but nothing seems to work.

A second small question: to make getch() non-blocking we need to call nodelay(win,TRUE), right?


void main()
{
        initscr();
        start_color();
        init_pair(1,COLOR_YELLOW,COLOR_CYAN);
        WINDOW *win = newwin(10,10,1,1);
        wbkgd(win,COLOR_PAIR(1));
        wprintw(win,"Hello, World.");
        wrefresh(win);
        getch();
        delwin(win);
        endwin();
}

like image 873
Tim Avatar asked Sep 27 '10 23:09

Tim


1 Answers

You are not supposed to mix operations on stdscr and windows created with newwin(). getch() operates on stdscr, so that is your problem. Replace that call with

wgetch(win);

(getch() is causing stdscr to be dumped over the top of your other window, and because that happens so quickly it looks like the other window never got displayed at all).

like image 193
caf Avatar answered Nov 11 '22 08:11

caf