启动时 Ncurses 屏幕空白

Question

每当我启动以下程序时，我都会看到一个空屏幕，而不是字符串“hello”：

use ncurses as n;

fn main() {
    render::setup_ncurses();
    let win = n::newwin(30, 30, 0, 0);
    n::waddstr(win, "hello");
    n::wrefresh(win);
    // n::refresh(); <-- this doesn't work either
    n::getch();
    // n::wgetch(win); <-- doesn't work either
    n::endwin();
}

具有设置功能：

pub fn setup_ncurses() {
    // Allows for wide characters
    n::setlocale(n::LcCategory::all, "");
    n::initscr();
    // Captures signal sequences and no buffer
    n::raw();
    // F keys and arrows
    n::keypad(n::stdscr(), true);
    // Doesn't echo typed keys
    n::noecho();
}

windows 是否有我遗漏的一些奇怪行为？使用 stdscr.

时不会发生这种情况

Answer 1

变化：

let win = n::newwin(30, 30, 0, 0);

用于：

let win = n::subwin(n::stdscr(), 30, 30, 0, 0);

启动时 Ncurses 屏幕空白

Ncurses screen blank on start

rust

ncurses