如何使用 Curses 从调整大小的窗口获取窗口大小? [英] How to get with Curses the window-size from a resized window?

问题描述

我以这种方式尝试过，但它不起作用 - getmaxyx 的返回值始终保持不变.

I tried it this way, but it doesn't work - the returned values from getmaxyx remain always the same.

#!/usr/bin/env perl
use warnings;
use 5.012;
use Curses;

my $size_changed = 0;
$SIG{'WINCH'} = sub { $size_changed= 1; };

initscr(); 

my ( $row, $col );
getmaxyx( $row, $col );
addstr( "begin: $row - $col\n" );
refresh();

for ( 0 .. 19 ) {
    addstr( "-------------\n" );
    if ( $size_changed ) {
        getmaxyx( $row, $col );
        addstr( "new: $row - $col\n" );
        $size_changed = 0;
    }
    refresh();
    sleep 1;

}

sleep 3;
endwin();

推荐答案

#!/usr/bin/env perl
use warnings;
use 5.012;
use Curses;

my $size_changed = 0;
$SIG{'WINCH'} = sub { $size_changed= 1; };

initscr(); 

my ( $row, $col );
getmaxyx( $row, $col );
addstr( "begin: $row - $col\n" );
refresh();

for ( 0 .. 19 ) {
    sleep 2;
    if ( $size_changed ) {
        endwin();
        refresh(); 
        getmaxyx( $row, $col );
        addstr( "new: $row - $col\n" );
        $size_changed = 0;
    }
}

sleep 3;
endwin();

^^^ 这对我有用.根据 Writing Programs with NCURSES/Using NCURSES under XTERM 你认为执行endwin() 后跟刷新()"

^^^ this worked for me. according to Writing Programs with NCURSES / Using NCURSES under XTERM you are suppose to do "endwin() followed by an refresh()"

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