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Don't crash when no serial ports are available on Windows

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This commit is contained in:
Alessandro Ranellucci 2015-11-16 12:50:16 +01:00
parent 80620a5e94
commit e50bbc0245
1 changed files with 7 additions and 3 deletions
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10
lib/Slic3r/GUI.pm
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@ -322,9 +322,13 @@ sub scan_serial_ports {
# Windows
if (eval "use Win32::TieRegistry; 1") {
my $ts = Win32::TieRegistry->new("HKEY_LOCAL_MACHINE\\HARDWARE\\DEVICEMAP\\SERIALCOMM",
{ Access => Win32::TieRegistry::KEY_READ() });
$ts->Tie(\my %reg);
push @ports, sort values %reg;
{ Access => 'KEY_READ' });
if ($ts) {
# when no serial ports are available, the registry key doesn't exist and
# TieRegistry->new returns undef
$ts->Tie(\my %reg);
push @ports, sort values %reg;
}
}
} else {
# UNIX and OS X