Printing inside window, not on borders

问题

I'm trying to write something inside a curses window, but it seems to write on borders too. How can I fix the code below?

win_self = newwin(LINES / 2, COLS, 0, 0);
box(win_self, 0, 0);
wrefresh(win_self);
wprintw(win_self, "foobar");

回答1:

In curses, the borders generated by box() are inside borders. As far as I can tell, there's no way to simply say "don't overwrite my border".

Nevertheless, there are three solutions that I can think of right now:

don't overwrite the border characters (use move())
draw the box after you draw window contents, then refresh() the screen (you're probably still overwriting something, but at least it's not the border characters)
create a "border window" with borders and a "content window" inside of it, which of course starts at (border_window_start_y + 1, border_window_start_x + 1) and is two lines/columns smaller than the "border window"

Just to make it more clear: the box() function doesn't add the property "this window has visible borders" to the window, it just prints border characters around the window.

You are:

free to overwrite those border characters
supposed to be cautious if you don't want them overwritten

回答2:

I'd say the easiest way is to create a window inside of the window borders and print in that window.

win_self = newwin(LINES / 2, COLS, 0, 0);
box(win_self, 0, 0);
derwin_self = derwin(win_self, LINES / 2 - 2, COLS - 2, 0, 0);
wprintw(derwin_self, "foobar");

来源：https://stackoverflow.com/questions/5749634/printing-inside-window-not-on-borders

标签

ncurses