ejectcd.pl

来自「WIN32::API for perl dev 5」· PL 代码 · 共 29 行

#perl -w
use strict;

use Win32::API;

my $mciSendString = new Win32::API(
    "winmm",
    "mciSendString",
    ['P', 'P', 'N', 'N'], 'N'
)
or die "Can't import the mciSendString API:\n$!";

doMM("close cdaudio");
doMM("open cdaudio shareable");
doMM("set cdaudio door open");
doMM("close cdaudio");

sub doMM {
    my($cmd) = @_;
    my $ret = "\0" x 1025;
    my $rc = $mciSendString->Call($cmd, $ret, 1024, 0);
    if($rc == 0) {
        $ret =~ s/\0*$//;
        return $ret;
    } else {
        return "error '$cmd': $rc";
    }
}